CN102106092A - Antenna device and communication equipment using same - Google Patents

Antenna device and communication equipment using same Download PDF

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Publication number
CN102106092A
CN102106092A CN2009801293327A CN200980129332A CN102106092A CN 102106092 A CN102106092 A CN 102106092A CN 2009801293327 A CN2009801293327 A CN 2009801293327A CN 200980129332 A CN200980129332 A CN 200980129332A CN 102106092 A CN102106092 A CN 102106092A
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China
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circuit
signal
terminal
intersection point
antenna
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Granted
Application number
CN2009801293327A
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Chinese (zh)
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CN102106092B (en
Inventor
佐古元彦
福岛奖
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication of CN102106092A publication Critical patent/CN102106092A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transceivers (AREA)
  • Radio Transmission System (AREA)

Abstract

Disclosed is an antenna device that comprises an active circuit, to which the received signals from a first antenna and a second antenna are supplied, a first transmission line, and a second transmission line. The active circuit is sent power from a power supply circuit via the first transmission line, and is controlled by a first control signal from a first signal generating circuit via the second transmission line. With this configuration, the potential amplitude that can be used in the first control signal can be expanded, and the size of the antenna device is reduced without requiring a regulator.

Description

Antenna assembly and the communication equipment that has used this antenna assembly
Technical field
The present invention relates to the antenna assemblies that communicator and this communicator adopted such as television receiver, MIMO (utilizing the data transmit-receive of a plurality of antennas) system of the diversity reception mode that carries in the vehicle etc.
Background technology
Utilize Figure 30～Figure 32, the television reception that carries in the existing vehicle antenna assembly with diversity (diversity) mode is described.
Figure 30 is the figure of the vehicle-mounted embodiment of the existing diversity mode antenna of expression.Existing television reception has with the diversity mode antenna: stick on windshield 100 upper area the 1st film antenna 101 and stick on the 2nd film antenna 102 of the upper area of windshield 100 discretely with the 1st film antenna 101.The 1st film antenna 101 is connected with the 1st active circuit 103, and the 2nd film antenna 102 is connected with the 2nd active circuit 104.Existing television reception, is connected with back grade electronic unit (Figure 31 107) by the 1st transmission line 105 that is connected with the 1st active circuit 103 and the 2nd transmission line 106 that is connected with the 2nd active circuit 104 with the antenna assembly of diversity mode.
Figure 31 is the circuit block diagram of existing television reception with the diversity mode antenna assembly.In Figure 31, existing television reception has with diversity mode antenna assembly 108: the 1st active circuit 103 that is connected with the 1st film antenna 101 and the 2nd active circuit 104 that is connected with the 2nd film antenna 102.And existing television reception has with the diversity mode antenna assembly: the 1st transmission line 105 that is connected with the 1st active circuit 103 and the 2nd transmission line 106 that is connected with the 2nd active circuit 104.The 1st transmission line 105 is connected with the electronic unit 107 of the control of carrying out diversity mode with the 2nd transmission line 106.
The 1st active circuit 103 has: the 1st variable matching circuit 109 that is transfused to the TV signal that the 1st film antenna 101 receives; The 1st amplifier 110 that is connected with the outlet side of the 1st variable matching circuit 109; The 3rd high pass filter 111 that is connected and is connected with outlet side with the 1st transmission line 105 with the 1st amplifier 110.And the 1st active circuit 103 has the 3rd low pass filter the 112, the 1st adjuster (regulator) the 113, the 1st control signal decision circuit 114.The 3rd low pass filter 112 is connected with the 1st transmission line 105, is transfused to the supply voltage of the supply via the 1st transmission line 105 and the signal after the control signal stack.The 1st adjuster 113 is connected with the outlet side of the 3rd low pass filter 112 with the 1st control signal decision circuit 114.
Equally, the 2nd active circuit 104 has: the 2nd variable matching circuit 115 that is transfused to the TV signal that the 2nd film antenna 102 receives; The 2nd amplifier 116 that is connected with the outlet side of the 2nd variable matching circuit 115; The 4th high pass filter 117 that is connected and is connected with outlet side with the 2nd transmission line 106 with the 2nd amplifier 116.And the 2nd active circuit 104 has: the 4th low pass filter the 118, the 2nd adjuster the 119, the 2nd control signal decision circuit 120.The 4th low pass filter 118 is connected with the 2nd transmission line 106, is transfused to the supply voltage of the supply via the 2nd transmission line 106 and the signal after the control signal stack.The 2nd adjuster 119 is connected with the outlet side of the 4th low pass filter 118 with the 2nd control signal decision circuit 120.
Electronic unit 107 has: the 1st high pass filter 121 that is transfused to TV signal via the 1st transmission line 105; The 1RF circuit 122 that is connected with the outlet side of the 1st high pass filter 121; Be connected with the 1st transmission line 105, be transfused in the 1st power supply/control signal generation circuit 123 the 1st low pass filter 124 of the signal after the supply voltage that generates superposes with control signal.
Electronic unit 107 has: the 2nd high pass filter 125 that is transfused to TV signal via the 2nd transmission line 106; The 2RF circuit 126 that is connected with the outlet side of the 2nd high pass filter 125; And be connected with the 2nd transmission line 106, be transfused to the 2nd low pass filter 128 of the signal after the supply voltage that generates superposes with control signal in the 2nd power supply/control signal generation circuit 127.Outlet side at 1RF circuit 122 and 2RF circuit 126 is connected with demodulator circuit 129, is used for TV signal is carried out demodulation.
Figure 32 is the figure of the characteristic of the signal after the supply voltage of expression in the existing diversity mode antenna assembly superposes with control signal.The supply voltage of generation in the 1st power supply/control signal generation circuit 123 and the 2nd power supply/control signal generation circuit 127 and the waveform of the signal after the control signal stack have been represented.
In Figure 32, the transverse axis express time, the longitudinal axis is represented magnitude of voltage.Signal 130 after the stack of supply voltage and control signal always have can be level and smooth than the 1st adjuster 113 and the 2nd adjuster 119 the big magnitude of voltage of minimum voltage value 131.
And signal 130 has been set the 1st magnitude of voltage the 132, the 2nd magnitude of voltage the 133, the 3rd magnitude of voltage the 134, the 4th magnitude of voltage 135 these 4 magnitudes of voltage, switched voltage values between them in chronological order in the voltage of minimum voltage value more than 131.Utilize above-mentioned the 1st magnitude of voltage the 132, the 2nd magnitude of voltage the 133, the 3rd magnitude of voltage the 134, the 4th magnitude of voltage 135 these 4 magnitudes of voltage, the 1st power supply/control signal generation circuit 123 and the 2nd power supply/control signal generation circuit 127 is controlled the 1st variable matching circuit 109 and the 2nd variable matching circuit 115 respectively.
Particularly, the signal 130 that generates in the 1st power supply/control signal generation circuit 123 is supplied with to the 1st transmission line 105 by the 1st low pass filter 124.Here, signal 130 is compared with TV signal, owing to be the signal of low-down frequency, so therefore the 1st high pass filter 121 that can't can pass through by TV signal can not arrive the 1RF circuit.
, after having arrived the 3rd low pass filter 112, supplied with to the 1st adjuster 113 and the 1st control signal decision circuit 114 to the 1st transmission line 105 signal supplied 130 through the 3rd low pass filter 112 via the 1st transmission line 105.Here, signal 130 based on above-mentioned same reason, can't pass through the 3rd high pass filter 111.
In the 1st adjuster 113, signal 130 is flattened into the magnitude of voltage lower than the minimum voltage value 131 of Figure 32, as power supply voltage, supplies with to the 1st amplifier 110 and the 1st control signal decision circuit 114.
And in the 1st control signal decision circuit 114, decision signal 130 is equivalent to which the magnitude of voltage level in the 1st magnitude of voltage the 132, the 2nd magnitude of voltage the 133, the 3rd magnitude of voltage the 134, the 4th magnitude of voltage 135.In order to become state, supply with control signal to the 1st variable matching circuit from the 1st control signal decision circuit 114 to pre-assigned the 1st variable matching circuit 109 of each magnitude of voltage level.The state of the 1st variable matching circuit is changed based on above-mentioned control signal, so that become and the optimal state of frequency band of wanting the TV signal that receives.
Owing to compare with signal 130, be very high frequency, so almost do not supplied with to the 1st transmission line 105 entirely by the 3rd low pass filter 112 ground by the TV signal that the 1st film antenna 101 receives.Then, by the 1st high pass filter 121, supplied with to 1RF circuit 122.In the 1RF circuit, TV signal be exaggerated, noise is removed, after the frequency translation, quantization, supply with and by demodulation to demodulator circuit 129.Demodulator circuit 129 is supplied to the TV signal that receives equally in the 2nd film antenna 102, each TV signal in demodulator circuit 129 by demodulation.After the demodulation, 2 TV signal are carried out high specific synthesizes, and can realize the improvement of receiving feature.
In above-mentioned existing antenna assembly, supply voltage of supplying with to the 1st active circuit 103 and the 2nd active circuit 104 and control signal are in the 1st power supply/control signal generation circuit 123 and the 2nd power supply/control signal generation circuit 127, and signal 130 shown in figure 32 is applied like that.Therefore, the current potential width that control signal allowed is difficult to use big current potential width to control the 1st active circuit 103 and the 2nd active circuit 104 minimum voltage value regional limited more than 131.
And, signal 130 shown in figure 32 is such, owing to be superimposed with control signal at supply voltage, so can't directly use as supply voltage with this state, the 1st active circuit 103 and the 2nd active circuit 104 need make the 1st level and smooth adjuster 113 of magnitude of voltage and the 2nd adjuster 119.Therefore, be difficult to realize the miniaturization of the 1st active circuit 103 and the 2nd active circuit 104.
Wherein, as the formerly technical literature information relevant with the present application, for example known have a patent documentation 1,2.
[patent documentation 1] opens clear 61-136649 communique in fact
[patent documentation 2] spy opens flat 4-280125 communique
Summary of the invention
Antenna assembly of the present invention possesses: the active circuit, the 1st transmission line that is connected with the pairing active circuit of the 1st antenna and the 2nd transmission line that is connected with the pairing active circuit of the 2nd antenna that are transfused to received signal from the 1st antenna and the 2nd antenna.The power supply of active circuit is supplied to via the 1st transmission line from the power-supply circuit of the electronic unit that connects the 1st transmission line and the 2nd transmission line.The control of active circuit is carried out based on the control signal of supplying with via the 2nd transmission line from the control signal generation circuit of electronic unit.
By this formation, only supply voltage is supplied with to active circuit via the 1st transmission line, only control signal is supplied with to active circuit via the 2nd transmission line.Therefore, be not applied control signal voltage in the supply voltage, can use big current potential width control signal.And, because active circuit does not need adjuster, so can realize the miniaturization of active circuit.
Description of drawings
Fig. 1 is the block diagram of the antenna assembly that relates to of execution mode 1.
Fig. 2 is the figure of characteristic of the supply voltage of the antenna assembly that relates to of expression execution mode 1.
Fig. 3 is the figure of characteristic of the control signal of the antenna assembly that relates to of expression execution mode 1.
Fig. 4 is the figure of characteristic of another control signal of the antenna assembly that relates to of expression execution mode 1.
Fig. 5 is the block diagram of another active circuit of the antenna assembly that relates to of execution mode 1.
Fig. 6 is the block diagram of the antenna assembly that relates to of execution mode 2.
Fig. 7 is the block diagram of the control signal decision circuit of the antenna assembly that relates to of execution mode 2.
Fig. 8 is the block diagram of the 1st antenna element that relates to of execution mode 3.
Fig. 9 is the block diagram of the 3rd antenna element that relates to of execution mode 4.
Figure 10 is the block diagram of the 2nd antenna element that relates to of present embodiment 5.
Figure 11 goes into figure to Anneta module with the 2nd antenna element group that present embodiment 5 relates to.
The figure of the action when Figure 12 is the differential mode (differentialmode) of the antenna element that relates to of expression present embodiment 5.
The figure of the action when Figure 13 is the common mode of the antenna element that relates to of expression present embodiment 5.
Figure 14 is the block diagram of the 1st antenna element that relates to of present embodiment 5.
Figure 15 is the block diagram of the 3rd antenna element that relates to of present embodiment 5.
The figure of the design example when Figure 16 is the differential mode of the 2nd antenna element that relates to of expression present embodiment 5.
The figure of the design example when Figure 17 is the common mode of the 2nd antenna element that relates to of expression present embodiment 5.
The figure that passes through characteristic when Figure 18 is the differential mode of the antenna assembly that relates to of expression present embodiment 5.
The figure that passes through characteristic when Figure 19 is the common mode of the antenna assembly that relates to of expression present embodiment 5.
Figure 20 is the figure of the impedance operator in the port numbering 1 of the antenna assembly that relates to of expression present embodiment 5.
Figure 21 is the figure of the impedance operator in the port numbering 2 of the antenna assembly that relates to of expression present embodiment 5.
Figure 22 is the figure of the impedance operator in the port numbering 3 of the antenna assembly that relates to of expression present embodiment 5.
Figure 23 is the figure of the impedance operator in the port numbering 4 of the antenna assembly that relates to of expression present embodiment 5.
Figure 24 is the figure of the impedance operator in the port numbering 5 of the antenna assembly that relates to of expression present embodiment 5.
Figure 25 is the figure of the impedance operator in the port numbering 6 of the antenna assembly that relates to of expression present embodiment 5.
Figure 26 is the figure of the embodiment of the vehicle mounted antenna that relates to of expression present embodiment 6.
Radiation pattern when Figure 27 is the differential mode of the vehicle mounted antenna that relates to of present embodiment 6.
Radiation pattern when Figure 28 is the common mode of the vehicle mounted antenna that relates to of present embodiment 6.
Figure 29 be expression adopt that 2 groups of present embodiments 6 relate to the figure of embodiment of vehicle mounted antenna.
Figure 30 is the figure of the vehicle-mounted embodiment of the existing diversity mode antenna of expression.
Figure 31 is the circuit block diagram of existing diversity mode antenna assembly.
Figure 32 is the figure of the characteristic of the signal after the supply voltage of expression in the existing diversity mode antenna assembly superposes with control signal.
Among the figure: the 1-Anneta module; The 2-antenna assembly; The 3-communicator; The 4-active circuit; 5a-the 1st antenna; 5b-the 2nd antenna; 6a-the 1st variable matching circuit; 6b-the 2nd variable matching circuit; 7a-the 1st amplifier; 7b-the 2nd amplifier; 8-control signal decision circuit; The 9-electronic unit; 10a-the 1st high pass filter; 10b-the 2nd high pass filter; 11a-the 3rd high pass filter; 11b-the 4th high pass filter; 12a-the 1st low pass filter; 12b-the 2nd low pass filter; 13a-the 3rd low pass filter; 13b-the 4th low pass filter; 14a-the 1st transmission line; 14b-the 2nd transmission line; 15a-1RF circuit; 15b-2RF circuit; The 16-power-supply circuit; 17a-the 1st control signal generation circuit; 17b-the 2nd control signal generation circuit; The 18-demodulator circuit.
Embodiment
(execution mode 1)
Below, utilize Fig. 1, embodiments of the present invention 1 are described.Fig. 1 is the block diagram of antenna assembly of the present invention.
In Fig. 1, the communicator 3 of present embodiment 1 is made of Anneta module 1, antenna assembly 2, electronic unit 9.Antenna assembly 2 has: active circuit 4, the 1st transmission line 14a and the 2nd transmission line 14b that electronic unit 9 is connected with active circuit 4.
Anneta module 1 has the 1st antenna 5a, the 2nd antenna 5b, and the received signal of the 1st antenna 5a and the 2nd antenna 5b is supplied with to active circuit 4.And, by active circuit 4, the 1 antenna 5a and the corresponding connection of the 1st transmission line 14a, the 2nd antenna 5b and the corresponding connection of the 2nd transmission line 14b.
Active circuit 4 has: the 1st variable matching circuit 6a, the 1st amplifier 7a that is connected with the outlet side of the 1st variable matching circuit 6a, the 3rd high pass filter 11a and the 3rd low pass filter 13a that are transfused to the signal that the 1st antenna 5a receives.The 3rd high pass filter 11a is connected with the outlet side of the 1st amplifier 7a, and is connected with the 1st transmission line 14a.The 3rd low pass filter 13a is connected with the 1st transmission line 14a, is transfused to the supply voltage of supplying with via the 1st transmission line 14a.
And active circuit 4 has: the 2nd variable matching circuit 6b, the 2nd amplifier 7b that is connected with the outlet side of the 2nd variable matching circuit 6b, the 4th high pass filter 11b, the 4th low pass filter 13b and the control signal decision circuit 8 that are transfused to the signal that the 2nd antenna 5b receives.The 4th high pass filter 11b is connected with the outlet side of the 2nd amplifier 7b, and is connected with the 2nd transmission line 14b.The 4th low pass filter 13b is connected with the 2nd transmission line 14b, is transfused to the 1st control signal of supplying with via the 2nd transmission line 14b.Control signal decision circuit 8 is connected with the outlet side of the 4th low pass filter 13b.
The supply voltage of exporting via the 3rd low pass filter 13a is supplied with by each active element (for example the 1st amplifier 7a, the 2nd amplifier 7b, control signal decision circuit 8 etc.) to active circuit 4.
Electronic unit 9 has: the 1st high pass filter 10a that is transfused to the signal that is received by the 1st antenna 5a via the 1st transmission line 14a; The 1RF circuit 15a that is connected with the outlet side of the 1st high pass filter 10a; Be connected with the 1st transmission line 14a, be transfused in power-supply circuit 16 the 1st low pass filter 12a of the supply voltage that generates.
Electronic unit 9 has: the 2nd high pass filter 10b that is transfused to the signal that is received by the 2nd antenna 5b via the 2nd transmission line 14b; The 2RF circuit 15b that is connected with the outlet side of the 2nd high pass filter 10b; Be connected with the 2nd transmission line 14b, be transfused to the 2nd low pass filter 12b of the 1st control signal that in the 1st control signal generation circuit 17a, generates.And, be connected with demodulator circuit 18 in the output of 1RF circuit 15a and 2RF circuit 15b.
In Fig. 1, communicator 3 has: Anneta module 1, active circuit the 4, the 1st transmission line 14a, the 2nd transmission line 14b and electronic unit 9.Communicator 3 has and will be received by the 1st antenna 5a and receive and from the 2nd signal of 2RF circuit 15b output, the formation of the diversity reception mode of handling with the method for the best in demodulator circuit 18 from the 1st signal of 1RF circuit 15a output with by the 2nd antenna 5b.As concrete processing method, for example can consider high specific synthesis mode or selection mode etc.
Power supply carries out via the 1st transmission line 14a from power-supply circuit 16 to the supply of active circuit 4.
Fig. 2 is the figure of characteristic of the supply voltage of the antenna assembly that relates to of expression execution mode 1.Urgency carry out the power supply signal supplied from demodulator circuit 18 after power-supply circuit 16 sends, in power-supply circuit 16, generate approximate direct voltage as shown in Figure 2, and export to the 1st low pass filter 12a.Because the supply voltage to the 1st low pass filter 12a output is approximate direct voltage, so can pass through the 1st low pass filter 12a.
The cut-off frequency of the 1st low pass filter 12a is configured to can obtain enough attenuations under the frequency of the signal that is received by Anneta module 1, and be configured to supply voltage to pass through loss minimum.Thus, can prevent that the signal that is received by the 1st antenna 5a from passing through the situation that the 1st low pass filter 12a supplies with to power-supply circuit 16.And, the major part of the signal that is received by the 1st antenna 5a is supplied with to 1RF circuit 15a, can improve the receiving feature of communicator 3.
And, supply with to 1RF circuit 15a via the 1st high pass filter 10a hardly by the supply voltage behind the 1st low pass filter 12a.Its reason is that the cut-off frequency of the 1st high pass filter 10a is configured under the frequency of the signal that is received by the 1st antenna 5a, and is minimum by loss, and is configured to not pass through as the supply voltage of approximate D. C. value.Thus, can prevent to supply with power supply not, can reduce current sinking to 1RF circuit 15a.
Then, supply with to the 3rd low pass filter 13a via the 1st transmission line 14a by the supply voltage behind the 1st low pass filter 12a.The setting of the cut-off frequency of the 3rd low pass filter 13a and the 3rd high pass filter 11a is by the method setting same with the situation of the 1st low pass filter 12a and the 1st high pass filter 10a.Thus, can prevent that the signal that received by the 1st antenna 5a from supplying with the transmission loss that causes by the 3rd low pass filter 13a to other circuit.And, can prevent that the part of supply voltage from supplying with loss via the power supply that the 3rd high pass filter 11a causes to the 1st amplifier 7a supply.
The supply voltage of supplying with to the 3rd low pass filter 13a passes through the 3rd low pass filter 13a, is supplied with to the 1st amplifier 7a, the 2nd amplifier 7b, control signal decision circuit 8.
Here, the situation of the supply voltage of supplying with from power-supply circuit 16 and Figure 31, existing antenna assembly shown in Figure 32 is different, as shown in Figure 2, is not applied control signal in the supply voltage, and supply voltage becomes approximate direct voltage.Therefore, in antenna assembly of the present invention, can as existing antenna assembly, not need adjuster by active circuit 4.Therefore, can cut down two adjusters to existing antenna assembly, thereby realize small-sized antenna assembly.And, owing to do not need to install adjuster, so can realize raising, the cost degradation of production efficiency.
In addition, in execution mode 1, sent urgency power supply signal supplied from demodulator circuit 18 to power-supply circuit 16, but be not limited thereto.For example, also can from Fig. 1, send urgency power supply signal supplied by other not shown treatment circuits.
And in execution mode 1, as shown in Figure 2, power-supply circuit 16 is after receiving urgency power supply signal supplied, constantly to active circuit 4 supply line voltages from demodulator circuit 18.But, when the 1st antenna 5a or the 2nd antenna 5b receive the signal of the big power level that makes the 1st amplifier 7a or the 2nd amplifier 7b distortion level, can send to urge to power-supply circuit 16 from demodulator circuit 18 and stop the power supply signal supplied.Thus, can prevent the 1st amplifier 7a or the 2nd amplifier 7b distortion, cause the significantly situation of deterioration of receiving feature, and can realize the reduction of power consumption.In order to realize above-mentioned situation, for example can in electronic unit 9, dispose the testing circuit that can detect the performance number of importing among 1RF circuit 15a or the 2RF circuit 15b.
In addition, can constitute according to the performance number of the signal that is transfused in 1RF circuit 15a or demodulator circuit 18 or signal quality (desired value of the quality of received signal such as expression such as C/N (Carrier To Noise Ratio), BER (Bit ErrorRate) etc.) etc., the magnitude of voltage of the supply voltage of power-supply circuit 16 subtend active circuits 4 supplies carries out inching.Thus, can reduce the characteristic deviation of the antenna assembly that the manufacture deviation because of active circuit the 4, the 1st transmission line 14a causes.
The 1st control signal is carried out via the 2nd transmission line 14b from the 1st control signal generation circuit 17a to the supply of active circuit 4.
Fig. 3 is the figure of characteristic of the control signal of the antenna assembly that relates to of expression execution mode 1.When the signal that urge to send the 1st control signal from demodulator circuit 18 after the 1st control signal generation circuit 17a sends, in the 1st control signal generation circuit 17a, generate the 1st control signal as shown in Figure 3, and export to the 2nd low pass filter 12b.
In Fig. 3, the 1st control signal generation circuit 17a has generated the 1st control signal that timeliness changes according to 9 grades of current potentials more than the 0V.There is not the situation of the existing antenna assembly of image pattern 32 control signal that in supply voltage, superposeed like that.Therefore, antenna assembly 2 of the present invention can utilize broad current potential width to generate control signal.Thus, the receiving sensitivity in the time of can improving control signal decision circuit 8 reception control signals.And antenna assembly 2 of the present invention can easily increase the progression (being 9 grades of current potentials) of control signal in Fig. 3, thereby can realize the more control of height in active circuit 4.
The cut-off frequency of the 1st low pass filter 12a is configured under the frequency of the signal that Anneta module 1 is received, can obtain enough attenuations, and be configured to the 1st control signal to Fig. 3 of the 2nd low pass filter 12b output roughly by (minimum) by loss.Therefore, can prevent that the signal that is received by the 2nd antenna 5b from passing through the situation that the 2nd low pass filter 12b supplies with to the 1st control signal generation circuit 17a.And, the major part that receives signal by the 2nd antenna 5b is supplied with to 2RF circuit 15b.Thus, can improve the receiving feature of communicator 3.
And, can supply with to 2RF circuit 15b through the 2nd high pass filter 10b hardly by the 1st control signal behind the 2nd low pass filter 12b.Its reason is that the cut-off frequency of the 2nd high pass filter 10b is configured under the frequency of the signal that is received by the 2nd antenna 5b, and is minimum by loss, and is configured to the 1st control signal and does not pass through.Thus, can prevent to supply with power supply not, can reduce current sinking to 2RF circuit 15b.
Then, supply with to the 4th low pass filter 13b via the 2nd transmission line 14b by the 1st control signal behind the 2nd low pass filter 12b.The setting of the cut-off frequency of the 4th low pass filter 13b and the 4th high pass filter 11b is by setting with the same method of the situation of the 2nd low pass filter 12b and the 2nd high pass filter 10b.Thus, can prevent that the signal that received by the 2nd antenna 5b from supplying with the transmission loss that causes by the 4th low pass filter 13b to other circuit, and, can prevent to supply with the loss that causes the 1st control signal to the 2nd amplifier 7b via the 4th high pass filter 11b because of the part of the 1st control signal.
Supply with to control signal decision circuit 8 through the 4th low pass filter 13b to the 1st control signal that the 4th low pass filter 13b supplies with, the 1st control signal is deciphered thus.The control signal corresponding with deciphering the result sent to the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b from control signal decision circuit 8, and the best that the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b become the signal that is used to receive regulation constitutes.Thus, can always realize having the communicator 3 of good receiving feature.
In addition, though carry out the control signal that sends to the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b by the 2nd transmission line 14b of a holding wire, but as shown in Figure 3, owing to can generate the 2nd control signal with the potential range of broadness, so can send a large amount of information in the unit interval.
And, can replace the 1st control signal shown in Figure 3, and utilize the different sine wave of frequency of the signal that receives with Anneta module 1.Even if use sinusoidal wave amplitude, phase place, also can send the 1st control signal.Thus, the bandwidth of can constriction the 1st control signal occupying can avoid causing because of the 1st control signal the receptivity deterioration of communicator 3.
And, also can replace the 1st control signal shown in Figure 3, and adopt the 1st control signal as shown in Figure 4.Fig. 4 is the figure of characteristic of another control signal of the antenna assembly that relates to of expression execution mode 1.The wavy waveform of the 1st control signal shown in Figure 4 and the rectangle of the 1st control signal shown in Figure 3 is compared, and becomes smoother waveform.Thus, compare with the 1st control signal shown in Figure 3, the bandwidth that the 1st control signal of Fig. 4 can constriction be occupied can be avoided the receiving feature deterioration of communicator 3.
And then the 1st transmission line 14a and the 2nd transmission line 14b can be made of coaxial line.Under this situation, supply voltage and the 1st control signal are supplied between the holding wire of coaxial line and shielding (shield) line.
In addition, in execution mode 1, active circuit 4 can become the formation with control signal decision circuit 8.Under this situation, become the 1st control signal, self control the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b by the 1st control signal directly to the formation of the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b input.Thus, control signal decision circuit 8 can be deleted, more small-sized antenna assembly can be realized.
And the 1st high pass filter 10a, the 2nd high pass filter 10b, the 3rd high pass filter 11a, the 4th high pass filter 11b can be the circuit formations that 1 element capacitor has been inserted in only series connection.By so simple formation, also can when stoping the passing through of supply voltage and control signal, realize the minimizing of necessary component count.
And, comparing with the 1st high pass filter 10a, the 2nd high pass filter 10b can be that filtering progression more constitutes.Owing to compare with supply voltage, the frequency of the 1st control signal is generally higher, so it is also contemplated that the frequency of the signal that approaches Anneta module 1 reception.Therefore, increase the filtering progression of the 2nd high pass filter 10b, the attenuation in the frequency band that the 1st control signal occupies is increased, prevent the receiving feature deterioration of communicator 3.Because compare with the signal that Anneta module 1 receives, the performance number that can envision the 1st control signal is bigger, so stop the 1st control signal to be leaked to 2RF circuit 15b by such formation, is very important for the receptivity deterioration that does not make communicator 3.Based on same reason, compare with the 3rd high pass filter 11a, the 4th high pass filter 11b can be the more formation of filtering progression.
In addition, the 1st low pass filter 12a, the 2nd low pass filter 12b, the 3rd low pass filter 13a, the 4th low pass filter 13b can be the circuit formations that 1 element inductor has been inserted in only series connection.By such formation, also can when passing through, the received signal that stops Anneta module 1 to receive realize the minimizing of necessary component count.
And antenna assembly 2 shown in Figure 1 is special-purpose for receiving, but also can be the device that can receive and dispatch.Under this situation, can with the 1st amplifier 7a, the 2nd amplifier 7b amplifier that is ready for sending usefulness respectively in parallel that receive usefulness, by filter or switch switch use send with and receive the amplifier of usefulness.Thus, can the transmitting/receiving wireless signal and can realize small-sized communicator.
And, in Fig. 1, just following the 1st variable matching circuit 6a, the 2nd variable matching circuit 6b that connects that utilizes the 1st control signal to control at the 1st antenna 5a, the 2nd antenna 5b, but do not need only to be defined in this formation.For example, also can control the 1st amplifier 7a, the 2nd amplifier 7b self characteristics (for example, P1dB, NF characteristic etc.).Under this situation, can consider pre-configured variable element in the transistor peripheral circuit of the characteristic that can change the 1st amplifier 7a, the 2nd amplifier 7b (for example varactor capacitor (varicap capacitor) etc.), the mode that the component value of this variable element is changed based on the 1st control signal.
Fig. 5 is the block diagram of another active circuit of the antenna assembly that relates to of execution mode 1.
In Fig. 5, be with the difference of the active circuit 4 of Fig. 1, removed the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b.Replace the 2nd by-pass switch 19b that is provided with the 1st by-pass switch 19a that is connected with outlet side with the input side of the 1st amplifier 7a, is connected with outlet side with the input side of the 2nd amplifier 7b.And, removed the control signal decision circuit 8 of Fig. 1, make the 1st control signal directly be imported into the 1st by-pass switch 19a, the 2nd by-pass switch 19b by the 4th low pass filter 13b.
In the formation of Fig. 5, the 1st by-pass switch 19a, the 2nd by-pass switch 19b prevent the big received signal of the 1st amplifier 7a, the 2nd amplifier 7b input, the 1st amplifier 7a, the 2nd amplifier 7b distortion.And, play the big received signal of 1RF circuit 15a, 2RF circuit 15b input that prevents electronic unit 9, the effect of the output distortion of 1RF circuit 15a, 2RF circuit 15b.
Particularly, in active circuit 4 or electronic unit 9, prepared the testing circuit (not shown) that performance number to the received signal detects in advance, when the performance number that receives is that certain value is when following (when moving usually), the 1st by-pass switch 19a, the 2nd by-pass switch 19b disconnect, received signal from the 1st amplifier 7a, the 2nd amplifier 7b by being exaggerated.
The performance number of the signal of deriving when testing circuit is certain certain value when above, by the 1st control signal, makes the switch connection of at least one side among the 1st by-pass switch 19a and the 2nd by-pass switch 19b.Thus, owing to received signal is walked around the 1st amplifier 7a or the 2nd amplifier 7b can not be exaggerated, so can avoid the received signal distortion, cause the situation of receiving feature deterioration.
In addition, also can replace the 1st by-pass switch 19a, the 2nd by-pass switch 19b are connected, and stop power-supply circuit 16 to the 1st amplifier 7a, the 2nd amplifier 7b supply power.Thus, can realize little power consumption, the communicator 3 that receptivity is outstanding.
Wherein, in an embodiment of the present invention, " active circuit " is meant the circuit that contains an active element at least, for example, is meant and mixes the circuit be equipped with the filter that is made of passive component and contain the amplifier etc. of active element.And in active circuit 4, the object elements of being controlled by the 1st control signal can have a plurality of.For example, the 1st, the 2nd variable matching circuit 6a, the 6b of Fig. 1 and the 1st, the 2nd by-pass switch 19a, the 19b of Fig. 5 can exist simultaneously, and, can control the characteristic of the 1st, the 2nd amplifier 7a, 7b simultaneously.The control of having made up above-mentioned a plurality of elements can be by effect of the present invention, promptly can utilize the voltage width of the 1st control signal of supplying with to active circuit 4 by the 2nd transmission line 14b to realize extensively.
And, in Fig. 1,1RF circuit 15a, 2RF circuit 15b are arranged on electronic unit 9 sides, but also can are that these circuit are included in the formation in the active circuit 4.Thus, the frequency of the received signal of transmitting among the 1st, the 2nd transmission line 14a, the 14b can be reduced in, the loss in the transmission line can be reduced.Under this situation, the control signal that is used for controlling 1RF circuit 15a, 2RF circuit 15b is also contained in the 1st control signal.
In addition, preferred antenna module 1 is 1 small modules.Its reason is, by the 1st transmission line 14a of a circuit, carried out the supply of the active element of supply voltage under the active element under the 1st antenna 5a (for example the 1st amplifier 7a etc.) and the 2nd antenna 5b (for example the 2nd amplifier 7b etc.).Consider this situation, although preferred the 1st antenna 5a and the 2nd antenna 5b by near configuration, the combination or the structure of the antenna that coefficient correlation is low, the insulation between antenna uprises.Example as realizing that this asks the antenna configuration of condition is made as the balanced type antenna with the side in the 1st antenna and the 2nd antenna, and the opposing party is made as unbalance type antenna.Detailed description at this antenna configuration will be narrated in the back.
In addition, even if use the antenna of partial wave direction quadrature, also can realize small-sized, low coefficient correlation.
(execution mode 2)
Below, utilize Fig. 6,7 pairs of embodiments of the present invention 2 to describe.Fig. 6 is the block diagram of the antenna assembly that relates to of embodiments of the present invention 2.At with Fig. 1 in the same part of the execution mode represented 1 give same-sign, be that following explanation is carried out at the center with different structures.
In Fig. 6, be that with execution mode 1 difference of Fig. 1 Anneta module 1 also has the 3rd antenna 5c except the 1st antenna 5a, the 2nd antenna 5b.And active circuit 4 has the 3rd variable matching circuit 6c, the 3rd amplifier 7c that is connected with the outlet side of the 3rd variable matching circuit 6c, the 6th high pass filter 11c and the 6th low pass filter 13c that is connected with the 3rd antenna 5c.The side of the 6th high pass filter 11c is connected with the 3rd amplifier 7c, and the opposing party is connected with the 3rd transmission line 14c.The side of the 6th low pass filter 13c is connected with the 3rd transmission line 14c, and the opposing party is connected with control signal decision circuit 8.
And electronic unit 9 has the 5th high pass filter 10c, 3RF circuit 15c, the 5th low pass filter 12c and the 2nd control signal generation circuit 17b that is connected with the 3rd transmission line 14c.The side of 3RF circuit 15c is connected with the 5th high pass filter 10c, and the opposing party is connected with demodulator circuit 18.The side of the 5th low pass filter 12c is connected with the 3rd transmission line 14c, and the opposing party is connected with the 2nd control signal generation circuit 17b.
The antenna assembly of execution mode 2 shown in Figure 6 has constituted the diversity reception mode antenna assembly with 3 branches (branch).Compare with the antenna assembly of execution mode 1, antenna assembly 2 shown in Figure 6 big difference in action is the control method of active circuit 4.
The antenna assembly 2 of execution mode 2 can utilize the 1st control signal that is supplied to via the 2nd transmission line 14b from the 1st control signal generation circuit 17a and these 2 control signals of the 2nd control signal that are supplied to via the 3rd transmission line 14c from the 2nd control signal generation circuit 17b.Therefore, for example utilize based on the poor of these 2 control signals and, long-pending etc. and the value that derives is as control signal, can highly control active circuit 4.
Particularly, the 2nd transmission line 14b and these 2 circuits of the 3rd transmission line 14c can be utilized as feed line, the 1st control signal and the 2nd control signal be supplied with to these circuits with balanced mode (differential mode).Thus, can make the current potential of 2 control signals expand to minus side.In addition, if, then can prevent the situation that control signal is radiated as electromagnetic wave from these circuits with the 2nd transmission line 14b and the approaching configuration of the 3rd transmission line 14c.
Utilize Fig. 7, the appearance of above-mentioned concrete action is described.
Fig. 7 is the block diagram of the control signal decision circuit of the antenna assembly that relates to of execution mode 2.In Fig. 7, control signal decision circuit 8 has at least: the control circuit 21 that is transfused to the balanced-to-unbalanced transformer 20 of the 1st control signal and the 2nd control signal and is transfused to the output signal of balanced-to-unbalanced transformer 20.
Be used for control signal, supply with by the signal that the difference based on the 1st control signal and the 2nd control signal derives by the electronic unit 9 control active circuits 4 of Fig. 6.Under the situation that the difference based on the 1st control signal and the 2nd control signal transmits control signal,, then can efficient best control signal be transmitted to control signal decision circuit 8 if make the 1st control signal opposite with the phase place of the 2nd control signal.This transmission state is called balanced mode (differential mode).
Between the 1st transmission line 14a and the 2nd transmission line 14b, transmit and the control signal of coming with balanced mode, be balanced-balun 20 converts the unbalance signal with positive negative potential to, and supplies with to control circuit 21.Thus, can use the control signal that except positive direction, also has the current potential of negative direction, make various control of active circuit 4 become possibility.And, because the 1st transmission line 14a and the 2nd transmission line 14b are transmitted the control signal of opposite phase, so under the situation near configuration, can suppress radiation from the control signal of these transmission lines with the 1st transmission line 14a and the 2nd transmission line 14b.
Also can with the balanced mode control signals transmitted as sine wave, make frequency direction, phase directional, amplitude direction have signal.Thus, the frequency band that control signal is occupied narrows down, and not only can realize the high communicator of receiving feature 3, and can diversely control active circuit 4.
(execution mode 3)
Below, utilize Fig. 8 that embodiments of the present invention 3 are described.Fig. 8 is the block diagram of the 1st antenna element that relates to of execution mode 3.Execution mode 3 shown in Figure 8 be by the 1st antenna element 22 realized execution mode 1 or execution mode 2 constitute the Anneta module 1 of the 1st antenna 5a and the 2nd antenna 5b the time embodiment.
In Fig. 8, the 1st antenna element 22 of present embodiment 3 has: the antenna element 27 that possesses the 1st terminal the 23, the 2nd terminal the 24, the 3rd terminal 25 and the 4th terminal 26 these 4 terminals at least is (in Fig. 8, the shape of antenna element 27 is not specific, with the state record of black box (black box)).The 1st terminal 23 of antenna element 27 is connected with a side of the 1st circuit 28, the 2nd terminal 24 of antenna element 27 is connected with a side of the 2nd circuit 29, the 3rd terminal 25 of antenna element 27 is connected with a side of the 3rd circuit 30, and the 4th terminal 26 of antenna element 27 is connected with a side of the 4th circuit 31.The opposing party of the opposing party of the 1st circuit 28 and the 2nd circuit 29 is connected at the 1st intersection point 32 places, and the opposing party of the opposing party of the 3rd circuit 30 and the 4th circuit 31 is connected at the 2nd intersection point 33 places.
And the 1st antenna element 22 of present embodiment 3 has: be connected the 1st circuit 28 the 1st match circuit 34 midway and the 1st phaser 38, be connected the 2nd match circuit 35 midway and the 2nd phaser 39 of the 2nd circuit 29.The 1st antenna element 22 has the 3rd match circuit 36 midway and the 3rd phaser 40 that is connected the 3rd circuit 30, the 4th match circuit 37 midway and the 4th phaser 41 that is connected the 4th circuit 31 equally.And, at the 1st intersection point the 32, the 2nd intersection point 33, connected the active circuit 4 of Fig. 1.As a concrete example, be connected with the 1st variable matching circuit 6a of Fig. 1 at the 1st intersection point 32, be connected with the 2nd variable matching circuit 6b of Fig. 1 at the 2nd intersection point 33.
Here, import under the situation of signal from the 1st intersection point 32, the phase difference of the phase place of the phase place of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31 is roughly 180 degree ± 360 degree * n (n is the integer more than 0).In addition, import under the situation of signal from the 2nd intersection point 33, the phase difference of the phase place of the phase place of the signal that the 1st circuit 28 occurs in the 1st intersection point 32 sides, the signal that occurs in the 1st intersection point 32 sides with the 2nd circuit 29 also is roughly 180 degree ± 360 degree * n (n is the integer more than 0).
According to the mode that satisfies above-mentioned condition, designed the line length of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, with the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit 36 and the 4th match circuit 37, and the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41.
For example, from the signal that the 1st variable matching circuit 6a is input to the 1st intersection point 32, propagate to the 2nd variable matching circuit 6b side from the 2nd intersection point 33 hardly.On the contrary, for the signal that is input to the 2nd intersection point 33 from the 2nd variable matching circuit 6b, because the phase difference of the phase place of the phase place of the signal that the 1st circuit 28 occurs in the 1st intersection point 32 sides, the signal that occurs in the 1st intersection point 32 sides with the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0), so almost also can not propagate to the 1st variable matching circuit 6b side from the 1st intersection point 32.Therefore, can transmitting signal between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, can between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, guarantee insulation.Thus, the 1RF circuit 15a of Fig. 1 and 2RF circuit 15b can carry out the exchange of signal independently of each other by 1 antenna element 27.That is, the 1RF circuit 15a of Fig. 1 and 2RF circuit 15b can not be subjected to the restriction of time, frequency, carry out the exchange of signal independently of each other.Thus, can realize 2 Anneta modules that the coefficient correlation between antenna is low, small-sized.
Above-mentioned " in the situation of having imported signal from the 1st intersection point 32; phase place of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur; and the phase difference of the phase place of the signal of the 2nd intersection point 33 sides of the 4th circuit 31 appearance is roughly 180 degree ± 360 degree * n (n is the integer more than 0) " this record, and " import under the situation of signal from the 2nd intersection point 33; phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur; and the phase difference of the phase place of the signal that occurs of the 1st intersection point 32 sides of the 2nd circuit 29 also is roughly 180 degree ± 360 degree * n (n is the integer more than 0) " record in the scope of " roughly ", the phase difference that is meant above-mentioned 2 signals that compare is 135 to spend more than ± 360 degree * n, the scope of 225 degree ± 360 degree * n following (n is the integer more than 0).Equally, comprise the scope of technical scheme, in the application's record, the record of the phase place of regulation (or phase difference) pairing " roughly " means that having-45 with respect to the phase place of stipulating (or phase difference) spends+45 width of spending.Its reason is, if the phase place of the regulation among the application (or phase difference) for-45 spend+scopes of 45 degree in, can guarantee that then insulation between the 1st intersection point 32 and the 2nd intersection point 33 is the value more than the 10dB.
In addition, also can be according to importing under the situation of signal from the 1st intersection point 32, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, with the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit 36 and the 4th match circuit 37, and the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41.And, equally, also can be according to importing under the situation of signal from the 2nd intersection point 33, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 41, with the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit 36 and the 4th match circuit 37, and the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41.Thus, can obtain to make higher this favourable effect of insulation between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b.
In addition, the scope of " roughly " in above-mentioned " absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31 is roughly the same " this record and " absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the same " this record, the amplitude ratio that is meant above-mentioned 2 signals that compare is the following scope of 10dB.Its reason is, if be that mode below the 10dB designs the 1st antenna element 22 according to the amplitude ratio of above-mentioned 2 signals that compare, can guarantee that then the insulation between the 1st intersection point 32 and the 2nd intersection point 33 is the above value of 10dB.Equally, below in this application, during the record of the absolute value " roughly the same " of the amplitude of 2 signals that are compared when existence, the scope of " roughly the same " is meant that the amplitude ratio of 2 signals that compare is the following scope of 10dB.
Here, " amplitude " means the absolute value with sign symbol.
And, in the time of also can be according to the signal that equates at the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase and amplitude, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the mode of 180 degree ± 360 degree * n (n is the integer more than 0), designs line length, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39 of the 1st circuit the 28, the 2nd circuit 29.
Here, for example when being transfused to the signal of common mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference of the electric current of the signal of common mode is zero.Therefore, when the signal that the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase and amplitude equates, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0), at the 1st intersection point 32 places, the electric current of the signal of common mode is cancelled, and propagates the signal of common mode hardly to the 1st variable matching circuit 6a side from the 1st intersection point 32.
On the contrary, for example when being transfused to the signal of differential mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference of the electric current of the signal of differential mode is ± 180 degree.Therefore, the 1st terminal 23 and the 2nd terminal 24 have been imported phase difference be the absolute value of 180 degree and amplitude equate signal the time, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 0 degree ± 360 degree * n (n is the integer more than 0), at the 1st intersection point 32 places, the electric current of the signal of differential mode is added, and the signal of differential mode is roughly propagated to the 1st variable matching circuit 6a side from the 1st intersection point 32.
Like this, during according to the signal that equates at the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude, the modes that the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0) design.Thus, can only be chosen in the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24, it is propagated to the 1st variable matching circuit 6a.
And, when signal that the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude equates, the difference of the phase place of the signal that occurs in the phase place of the signal that the 1st intersection point 32 sides of having considered the 1st circuit 28 occur, with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly under the situation of condition of 180 degree ± 360 degree * n (n is the integer 0 or more), the phase changing capacity till the 1st terminal 23 to the 2nd intersection points 33, and the difference of the phase changing capacity till the 2nd terminal 24 to the 2nd intersection points 33 be zero.That is, the electric current of the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is added with homophase at the 2nd intersection point 33, nearly all propagates to the 2nd variable matching circuit 6b side from the 2nd intersection point 33.On the contrary, the electric current of the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is added and offsets with anti-phase at the 2nd intersection point 33, propagates to the 2nd variable matching circuit 6b side from the 2nd intersection point 33 hardly.
Therefore, the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is almost only propagated to the 1st variable matching circuit 6a side, and the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is almost only propagated to the 2nd variable matching circuit 6b side.That is, the 1st antenna element 22 of present embodiment can take out the signal of described 2 patterns that produce via antenna element 27 respectively between the 1st terminal 23 and the 2nd terminal 24.
In addition, under this situation, in the time of also can be according to the signal that equates at the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.
Thus, can offset the electric current of the signal of the common mode that occurs at the 1st intersection point 32 more accurately, can improve from the ratio of the 1st intersection point 32 to the signal component of the relative common mode of differential mode of the 1st variable matching circuit 6a side propagation.
In addition, equally also can according to the 1st terminal 23 and the 2nd terminal 24 have been imported phase difference be the absolute value of 180 degree and amplitude equate signal the time, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41.Thus, can offset the electric current of the signal of the differential mode that occurs at the 2nd intersection point 33 more accurately, can improve from the ratio of the 2nd intersection point 33 to the signal component of the relative differential mode of common mode of the 2nd variable matching circuit 6b side propagation.
In addition, also can be roughly 90 degree ± 360 degree * n (n is the integer more than 0) according to the phase changing capacity till the 1st terminal 23 to the 1st intersection points 32, and be roughly the mode of-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 24 to the 1st intersection points 32, design the line length of the 1st circuit the 28, the 2nd circuit 29, with the 1st match circuit the 34, the 2nd match circuit 35, and the 1st phaser the 38, the 2nd phaser 39.
For example, when having produced the signal of common mode between the 1st terminal 23 and the 2nd terminal 24, owing to be roughly 90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 1st terminal 23 to the 1st intersection points 32, and be roughly-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 24 to the 1st intersection points 32, so be cancelled at the signal of the 1st intersection point 32 common modes.That is, for the signal of common mode, the 1st intersection point 32 becomes the place that imagination is grounded.The 1st intersection point 32 to the 1st terminals 23 that are grounded from imagination and the phase changing capacity till the 2nd terminal 24 are respectively 90 degree ,-90 degree, and the input impedance when the 1st terminal 23 and the 2nd terminal 24 are observed the 1st intersection point 32 sides respectively becomes infinity.Therefore, the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is propagated to the 1st intersection point 32 sides hardly, nearly all propagates to the 2nd intersection point 33 sides.Thus, the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b can be further improved, and the ratio of signal of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6a can be further improved.
And, under this condition, in the time of also can be according to the signal that equates when the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase and amplitude, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.
Thus, can offset the electric current of the signal of the common mode that occurs at the 1st intersection point 32 more accurately, can improve from the ratio of the 1st intersection point 32 to the signal component of the relative common mode of differential mode of the signal of the 1st variable matching circuit 6a side propagation.Can realize can be with the coefficient correlation that produces in the antenna element 27 diversity antenna that separates with the signal high precision of differential mode of the signal of low common mode.
In addition, also can be roughly+90 degree ± 180 degree * n (n is the integer more than 0) according to phase changing capacity from the 1st terminal 23 to the 2nd intersection points 33, and from the phase changing capacity of the 2nd terminal 24 to the 2nd intersection points 33 be roughly+90 the degree ± 180 degree * n (n is the integer more than 0) mode, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41.
Thus, when between the 1st terminal 23 and the 2nd terminal 24, having produced the signal of differential mode, since from the phase changing capacity of the 1st terminal 23 to the 2nd intersection points 33, with phase changing capacity from the 2nd terminal 24 to the 2nd intersection points 33 be same amount, so be cancelled at the signal of the 2nd intersection point 33 differential modes.
That is, for the signal of differential mode, the 2nd intersection point 33 is places that imagination is grounded.The 2nd intersection point 33 to the 1st terminals 23 that are grounded from imagination and the phase changing capacity of the 2nd terminal 24 all are 90 degree, and the input impedance when the 1st terminal 23 and the 2nd terminal 24 are observed the 2nd intersection point 33 sides respectively becomes infinity.
Therefore, the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is propagated to the 2nd intersection point 33 sides hardly, nearly all propagates to the 1st intersection point 33 sides.Thus, the signal volume ratio of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6a can be further improved, and then the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b can be improved.
And, under this condition, also can be according to when when the 1st terminal 23 and the 2nd terminal 24 have been imported the signal that the absolute value of amplitude equates with phase difference 180 degree, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31 designs line length, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41 of the 3rd circuit the 30, the 4th circuit 31.
Can offset the electric current of the signal of the common mode that occurs at the 1st intersection point 32 more accurately, can improve from the ratio of the 1st intersection point 32 to the signal component of the relative common mode of differential mode of the signal of the 1st variable matching circuit 6a side propagation.
Thus, can realize can be with the coefficient correlation that produces in the antenna element 27 diversity antenna that separates with the signal high precision of differential mode of the signal of low common mode.
In addition, also can be roughly+90 degree ± 180 degree * n (n is the integer more than 0) according to phase changing capacity from the 3rd terminal 25 to the 2nd intersection points 33, and be roughly+mode of 90 degree ± 180 degree * n (n is the integer more than 0) from the phase changing capacity of the 4th terminal 26 to the 2nd intersection points 33, design line length, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41 of the 3rd circuit the 30, the 4th circuit 31.
Thus, when for example between the 3rd terminal 25 and the 4th terminal 26, having produced the signal of differential mode, since from the phase changing capacity of the 3rd terminal 25 to the 2nd intersection points 33, with phase changing capacity from the 4th terminal 26 to the 2nd intersection points 33 be same amount, so be cancelled at the signal of the 2nd intersection point 33 differential modes.That is, for the signal of differential mode, the 2nd intersection point 33 becomes the place that imagination is grounded.The 2nd intersection point 33 to the 3rd terminals 25 that are grounded from imagination and the phase changing capacity of the 4th terminal 26 all are 90 degree, and the input impedance when the 3rd terminal 25 and the 4th terminal 26 are observed the 2nd intersection point 33 sides respectively becomes infinity.
Therefore, the signal of the differential mode that produces between the 3rd terminal 25 and the 4th terminal 26 is propagated to the 2nd intersection point 33 sides hardly, nearly all propagates to the 1st intersection point 32 sides.Thus, the ratio of signal of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6a can be further improved, and the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b can be further improved.
And, under this condition, also can according to when imported to the 3rd terminal 25 and the 4th terminal 26 phase difference be the absolute value of 180 degree and amplitude equate signal the time, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41.Can offset the electric current of the signal of the differential mode that occurs at the 2nd intersection point 33 more accurately, can improve from the ratio of the 2nd intersection point 33 to the signal component of the relative differential mode of common mode of the signal of the 2nd variable matching circuit 6b side propagation.Thus, can be with the coefficient correlation that produces in the antenna element 27 signal of low common mode and the signal high precision of differential mode separate, can realize obtaining the diversity antenna of 2 low signals of coefficient correlation.
In addition, in Fig. 8, can adopt formation with at least 1 removal in the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit the 36, the 4th match circuit the 37, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser the 40, the 4th phaser 41.Thus, not only can reduce the loss in the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, and can reduce components number, thereby can realize miniaturization, lightweight.
Wherein, the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit the 36, the 4th match circuit the 37, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser the 40, the 4th phaser 41 utilizes the circuit of reactance component to design basically.But, also can utilize the circuit that contains resistive element, amplifying circuit etc. to design.Thus, high insulation characterisitic between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b not only can be realized, but also the Transceiver Features of communicator can be improved.
(execution mode 4)
Below, utilize Fig. 9 that embodiments of the present invention 4 are described.Fig. 9 is the block diagram of the 3rd antenna element that relates to of execution mode 4.Execution mode 4 shown in Figure 9 is the embodiment when utilizing the 3rd antenna element 42 of Fig. 9 to realize the Anneta module 1 of formation the 1st antenna 5a of execution mode 1 or execution mode 2 and the 2nd antenna 5b.Wherein, for only putting down in writing same-sign, carry out following explanation with the different centers of constituting with execution mode 3 same formations.
In Fig. 9, the 3rd antenna element 42 of present embodiment 4 possesses the antenna element 27 (in Fig. 9, the shape of antenna element 27 is not specific, puts down in writing with the state of black box) that has 3 terminals at least.The 1st terminal 23 of antenna element 27 is connected with a side of the 1st circuit 28, and the 2nd terminal 24 of antenna element 27 is connected with a side of the 2nd circuit 29, and the 3rd terminal 25 of antenna element 27 is connected with a side of the 3rd circuit 30.The opposing party of the opposing party of the 1st circuit 28 and the 2nd circuit 29 is connected with the 1st intersection point 32, and the opposing party of the 3rd circuit 30 is connected with the 2nd intersection point 33.
And, can be according to importing under the situation of signal from the 2nd intersection point 33, the phase difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the mode of 180 degree ± 360 degree * n (n is the integer more than 0), designs line length, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39 of the 1st circuit the 28, the 2nd circuit 29 and the 3rd circuit 30.Thus, for example owing to the signal that sends from the 1st variable matching circuit 6a is cancelled at the opposing party's side and the 3rd terminal 25 of the 3rd circuit 30, so propagate to the 2nd variable matching circuit 6b side hardly.
On the contrary, for the signal that sends from the 2nd variable matching circuit 6b, because the phase difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0), so also propagate to the 1st variable matching circuit 6a side from the 1st intersection point 32 hardly.Therefore, transmitting signal not between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b can be guaranteed insulation between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b.Thus, the 1RF circuit 15a of Fig. 1 and 2RF circuit 15b can carry out the exchange of signal independently of each other via antenna element 27.That is, 1RF circuit 15a and 2RF circuit 15b can not be subjected to the system limit separate exchange of carrying out signal in ground of time, frequency.
And the 3rd antenna element 42 of present embodiment 4 is owing to reducing the quantity of the circuit that the 3rd terminal 25 is connected with the 2nd variable matching circuit 6b, the quantity of match circuit, the quantity of phaser, so can realize miniaturization, lightweight.
In addition, can be according to when the opposing party from the 3rd circuit 30 have imported signal, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 designs line length, the 1st match circuit 34 and the 2nd match circuit 35 and the 1st phaser 38 and the 2nd phaser 39 of the 1st circuit 28 and the 2nd circuit 29.Thus, can obtain to make higher this favourable effect of insulation between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b.
In addition, in the time of can be according to the signal that equates when the absolute value of having imported same-phase and amplitude to the 1st terminal 23 and the 2nd terminal 24, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the mode of 180 degree ± 360 degree * n (n is the integer more than 0), designs line length, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39 of the 1st circuit the 28, the 2nd circuit 29.
Here, for example when being transfused to the signal of common mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference of the electric current of the signal of common mode is zero.Therefore, when signal that the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same-phase and amplitude equates, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0).At the 1st intersection point 32 places, the electric current of the signal of common mode is cancelled, and propagates the signal of common mode hardly to the 1st variable matching circuit 6a side from the 1st intersection point 32.On the contrary, for example when being transfused to the signal of differential mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference variable of the electric current of the signal of differential mode is ± 180 degree.Therefore, when the 1st terminal 23 and the 2nd terminal 24 having been imported the signal that the absolute value of phase difference for ± 180 degree, amplitude equate, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 0 degree ± 360 degree * n (n is the integer more than 0).At the 1st intersection point 32 places, the electric current of the signal of differential mode is added, and the signal of differential mode is nearly all propagated to the 1st variable matching circuit 6a side from the 1st intersection point 32.
Like this, when signal that the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude equates, the difference of the phase place of the signal that be designed to the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0).Thus, can only select the signal of the differential mode of generation between the 1st terminal 23 and the 2nd terminal 24, it is propagated to the 1st variable matching circuit 6a.
And, when signal that the absolute value of having imported same phase and amplitude to the 1st terminal 23 and the 2nd terminal 24 equates, the difference of the phase place of the signal that consider the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the condition of 180 degree ± 360 degree * n (n is the integer more than 0).From the phase changing capacity of the 1st terminal 23 to the 2nd intersection points 33, with difference vanishing from the phase changing capacity of the 2nd terminal 24 to the 2nd intersection points 33.That is, the electric current of the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24, is nearly all propagated to the 2nd variable matching circuit 6b side with the homophase addition at the 3rd terminal 25.On the contrary, the electric current of the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is cancelled with the anti-phase addition at the 3rd terminal 25, propagates to the 2nd variable matching circuit 6b side hardly.
Therefore, the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is nearly all only propagated to the 1st variable matching circuit 6a side, and the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is nearly all only propagated to the 2nd variable matching circuit 6b side.That is, the 3rd antenna element 42 of present embodiment can take out the signal of described 2 patterns that produce between the 1st terminal 23 and the 2nd terminal 24 respectively.
In addition, under this situation, in the time of also can be according to the signal that equates when the absolute value of having imported same phase and amplitude to the 1st terminal 23 and the 2nd terminal 24, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.Precision is offset the electric current of the signal of the common mode that occurs at the 1st intersection point 32 well more, can improve from the ratio of the 1st intersection point 32 to the signal of the relative common mode of signal of the differential mode of the signal of the 1st variable matching circuit 6a side propagation.Thus, can be with the coefficient correlation that produces in the antenna element 27 signal of low common mode and the signal accuracy of differential mode separate well, can realize obtaining the compact diversity antenna of 2 low signals of coefficient correlation.
In addition, also can be roughly 90 degree ± 360 degree * n (n is the integer more than 0) according to phase changing capacity from the 1st terminal 23 to the 1st intersection points 32, and be roughly the mode of-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 24 to the 1st intersection points 32, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.
For example, when having produced the signal of common mode between the 1st terminal 23 and the 2nd terminal 24, be roughly 90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 1st terminal 23 to the 1st intersection points 32, and, be roughly-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 23 to the 1st intersection points 32.At the 1st intersection point 32, the signal of common mode is cancelled.That is, for the signal of common mode, the 1st intersection point 32 becomes the place that imagination is grounded.The 1st intersection point 32 to the 1st terminals 23 that are grounded from imagination and the phase changing capacity of the 2nd terminal 24 are respectively 90 degree ,-90 degree, and the input impedance when the 1st terminal 23 and the 2nd terminal 24 are observed the 1st intersection point 32 sides respectively becomes infinity.Therefore, the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is propagated to the 1st intersection point 32 sides hardly, and nearly all propagates to the 2nd intersection point 33 sides.Thus, can further improve the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b, and, the ratio of signal of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6a can be improved.
And, under this condition, in the time of also can be according to the signal that equates when the absolute value of having imported same phase, amplitude to the 1st terminal 23 and the 2nd terminal 24, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.Precision is offset the electric current of the signal of the common mode that occurs at the 1st intersection point 32 well more, can improve from the ratio of the 1st intersection point 32 to the signal of the relative common mode of signal of the differential mode of the signal of the 1st variable matching circuit 6a side propagation.Thus, can be with the coefficient correlation that produces in the antenna element 27 signal of low common mode and the signal accuracy of differential mode separate well, can realize obtaining the diversity antenna of 2 low signals of coefficient correlation.
In addition, can adopt in Fig. 9 formation with at least 1 removal in the 1st match circuit the 34, the 2nd match circuit the 35, the 1st phaser the 38, the 2nd phaser 39.Thus, not only can reduce the loss in the 1st circuit 28 and the 2nd circuit 29, and can reduce necessary components number, can realize miniaturization, lightweight.
In addition, the 1st match circuit the 34, the 2nd match circuit the 35, the 1st phaser 38 and the 2nd phaser 39 utilize the circuit of reactance component to design basically, but also can utilize the circuit that contains resistive element, amplifying circuit etc. to design.Thus, not only can realize the high insulation characterisitic between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, and can improve the Transceiver Features of electronic equipment.
(execution mode 5)
Below, utilize Figure 10 that embodiments of the present invention 5 are described.Figure 10 is the block diagram of the 2nd antenna element that relates to of execution mode 5.Execution mode 5 shown in Figure 10 is the embodiment when utilizing the 2nd antenna element 43 of Figure 10 to realize the Anneta module 1 of formation the 1st antenna 5a of execution mode 1 or execution mode 2 and the 2nd antenna 5b.Wherein, at only putting down in writing same-sign, carry out following explanation with the different centers of constituting with the same formation of execution mode 3.
In Figure 10, the 2nd antenna element 43 of present embodiment 5 has the antenna element 27 (in Figure 10, the shape of antenna element 27 is not specific, puts down in writing with the state of black box) that possesses the 1st terminal 23 and the 2nd terminal 24 these 2 terminals at least.The 1st terminal 23 of antenna element 27 is connected with a side of the 1st circuit 28, and the 1st terminal 23 is connected with a side of the 3rd circuit 30, and the 2nd terminal 24 is connected with a side of the 2nd circuit 29, and the 2nd terminal 24 is connected with a side of the 4th circuit 31.The opposing party of the opposing party of the 1st circuit 28 and the 2nd circuit 29 is connected with the 1st intersection point 32, and the opposing party of the opposing party of the 3rd circuit 30 and the 4th circuit 31 is connected with the 2nd intersection point 33.
And, import under the situation of signal from the 1st intersection point 32, the phase place of the signal that occurs according to the 2nd intersection point 33 sides of the 3rd circuit 30, the phase difference of the phase place of the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31 is roughly the mode of 180 degree ± 360 degree * n (n is the integer more than 0), designed the 1st circuit 28, the 2nd circuit 29, the line length of the 3rd circuit 30 and the 4th circuit 31, the 1st match circuit 34, the 2nd match circuit 35, the 3rd match circuit 36 and the 4th match circuit 37 and the 1st phaser 38, the 2nd phaser 39, the 3rd phaser 40 and the 4th phaser 41.
Thus, because the phase difference of the phase place of the phase place of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31 is roughly 180 degree ± 360 degree * n (n is the integer more than 0), so for example propagate to the 2nd variable matching circuit 6b side from the 2nd intersection point 33 hardly from the signal of the 1st variable matching circuit 6a transmission.
On the contrary, for the signal that sends from the 2nd variable matching circuit 6b, because the phase difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 also is roughly 180 degree ± 360 degree * n (n is the integer more than 0), so also roughly do not propagate to the 1st variable matching circuit 6a side from the 1st intersection point 32.
Therefore, can transmitting signal between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, can between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, guarantee insulation.Thus, the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b can carry out the exchange of signal independently of each other via antenna element 27.That is, 1RF circuit 15a and 2RF circuit 15b do not need the time of carrying out, the selection of frequency, just can carry out the exchange of signal independently of each other.And, can only be connected between the 2nd antenna element 43 of present embodiment 5 and the antenna element 27 by 2 splicing ears, compare with the 1st antenna element 22 of Fig. 8, the 2nd antenna element 42 of Fig. 9, can realize the simplification of constructing.
In addition, also can be according to importing under the situation of signal from the 1st intersection point 32, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit 36 and the 4th match circuit 37 and the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41.And, equally can be according to importing under the situation of signal from the 2nd intersection point 33, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit 36 and the 4th match circuit 37 and the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41.Thus, can obtain to make higher this favourable effect of insulation between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b.
In addition, in the time of also can be according to the signal that equates when the absolute value of having imported same phase and amplitude to the 1st terminal 23 and the 2nd terminal 24, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly the mode of 180 degree ± 360 degree * n (n is the integer more than 0), designs line length, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39 of the 1st circuit the 28, the 2nd circuit 29.
Here, for example when being transfused to the signal of common mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference vanishing of the electric current of the signal of common mode.Therefore, when signal that the absolute value of having imported same phase and amplitude to the 1st terminal 23 and the 2nd terminal 24 equates, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0).At the 1st intersection point 32, the electric current of the signal of common mode is cancelled, and propagates the signal of common mode hardly to the 1st variable matching circuit 6a side from the 1st intersection point 32.
On the contrary, for example when being transfused to the signal of differential mode between the 1st terminal 23 and the 2nd terminal 24, between the 1st terminal 23 and the 2nd terminal 24, the phase difference variable of the electric current of the signal of differential mode is ± 180 degree.Therefore, when having imported the signal that the absolute value of phase difference for ± 180 degree and amplitude equate to the 1st terminal 23 and the 2nd terminal 24, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 0 degree+360 degree * n (n is the integer more than 0).At the 1st intersection point 32, the electric current of the signal of differential mode is added, and the signal of differential mode is nearly all propagated to the 1st variable matching circuit 6a side from the 1st intersection point 32.
Like this, by according to the signal that equates when the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude the time, the modes that the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly 180 degree ± 360 degree * n (n is the integer more than 0) design, can only select the signal of the differential mode of generation between the 1st terminal 23 and the 2nd terminal 24 thus, it is propagated to the 1st variable matching circuit 6a.
And, when having considered the signal that equates when the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude, the difference of the phase place of the phase place of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29 is roughly under the situation of condition of 180 degree ± 360 degree * n (n is the integer 0 or more), from the phase changing capacity of the 1st terminal 23 to the 2nd intersection points 32, and be zero from the difference of the phase changing capacity of the 2nd terminal 24 to the 2nd intersection points 33.
Promptly, the electric current of the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is added with homophase at the 2nd intersection point 33, nearly all propagate to the 2nd variable matching circuit 6b side from the 2nd intersection point 33, on the contrary, the electric current of the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is cancelled with the anti-phase addition at the 2nd intersection point 33, propagates to the 2nd variable matching circuit 6b side from the 2nd intersection point 33 hardly.
Therefore, the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is nearly all only propagated to the 1st variable matching circuit 6a side, and the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is nearly all only propagated to the 2nd variable matching circuit 6b side.That is, the 2nd antenna element 43 of present embodiment can take out the signal of described 2 patterns that produce between the 1st terminal 23 and the 2nd terminal 24 respectively.
In addition, under this situation, in the time of also can be according to the signal that equates when the absolute value of the 1st terminal 23 and the 2nd terminal 24 having been imported same phase, amplitude, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.
Thus, the further precision of electric current of the signal of the common mode that occurs at the 1st intersection point 32 can be offset well, can be improved the ratio of signal of the relative common mode of signal of the differential mode of the signal of propagating to the 1st variable matching circuit 6a side from the 1st intersection point 32.In addition, equally can according to when imported to the 1st terminal 23 and the 2nd terminal 24 phase difference be the absolute value of 180 degree, amplitude equate signal the time, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41.
The further precision of electric current of the signal of the differential mode that occurs at the 2nd intersection point 33 can be offset well, can be improved the ratio of signal component of the relative common mode of differential mode of the signal of propagating to the 2nd variable matching circuit 6b side from the 2nd intersection point 33.Thus, can be with the coefficient correlation that produces in the antenna element 27 signal of low common mode and the signal accuracy of differential mode separate well, can realize obtaining the diversity antenna of 2 low signals of coefficient correlation.
In addition, also can be roughly 90 degree ± 360 degree * n (n is the integer more than 0) according to phase changing capacity from the 1st terminal 23 to the 1st intersection points 32, and be roughly the mode of-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 24 to the 1st intersection points 32, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.
When between the 1st terminal 23 and the 2nd terminal 24, having produced the signal of common mode, owing to be roughly 90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 1st terminal 23 to the 1st intersection points 32, and be roughly-90 degree ± 360 degree * n (n is the integer more than 0) from the phase changing capacity of the 2nd terminal 33 to the 1st intersection points 32, so be cancelled at the signal of the 1st intersection point 32 common modes.
That is, for the signal of common mode, the 1st intersection point 32 becomes the place that imagination is grounded.The 1st intersection point 32 to the 1st terminals 23 that are grounded from imagination and the phase changing capacity of the 2nd terminal 24 are respectively 90 degree ,-90 degree, and the input impedance when the 1st terminal 23 and the 2nd terminal 24 are observed the 1st intersection point 32 sides respectively becomes infinity thus.Therefore, the signal of the common mode that produces between the 1st terminal 23 and the 2nd terminal 24 is propagated to the 1st intersection point 32 sides hardly, and nearly all propagates to the 2nd intersection point 33 sides.
Thus, the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b can be further improved, and the ratio of signal of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6a can be improved.
And, under this condition, in the time of also can be according to the signal that equates when the absolute value of having imported same phase, amplitude to the 1st terminal 23 and the 2nd terminal 24, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 1st intersection point 32 sides of the 1st circuit 28 occur, the signal that occurs with the 1st intersection point 32 sides of the 2nd circuit 29, design the line length of the 1st circuit the 28, the 2nd circuit 29, the 1st match circuit the 34, the 2nd match circuit 35 and the 1st phaser the 38, the 2nd phaser 39.The further precision of electric current of the signal of the common mode that occurs at the 1st intersection point 32 can be offset well, can be improved the ratio of signal component of the relative common mode of differential mode of the signal of propagating to the 1st variable matching circuit 6a side from the 1st intersection point 32.Thus, the signal of the common mode of generation and the signal accuracy of differential mode in the antenna element 27 can be separated well, can realize to obtain the diversity antenna of 2 low signals of coefficient correlation.
In addition, also can be roughly+90 degree ± 180 degree * n (n is the integer more than 0) according to phase changing capacity from the 1st terminal 23 to the 2nd intersection points 32, and from the phase changing capacity of the 2nd terminal 24 to the 2nd intersection points 33 be roughly+90 the degree ± 180 degree * n (n is the integer more than 0) mode, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 38, the 4th phaser 39.
Thus, for example when between the 1st terminal 23 and the 2nd terminal 24, having produced the signal of differential mode, since from the phase changing capacity of the 1st terminal 23 to the 2nd intersection points 33, with phase changing capacity from the 2nd terminal 24 to the 2nd intersection points 33 be same amount, so be cancelled at the signal of the 2nd intersection point 33 differential modes.
That is, for the signal of differential mode, the 2nd intersection point 33 becomes the place that imagination is grounded.The 2nd intersection point 33 to the 1st terminals 23 that are grounded from imagination and the phase changing capacity of the 2nd terminal 24 all are 90 degree, and thus, the input impedance when the 1st terminal 23 and the 2nd terminal 24 are observed the 2nd intersection point 33 sides respectively becomes infinity.Therefore, the signal of the differential mode that produces between the 1st terminal 23 and the 2nd terminal 24 is propagated to the 2nd intersection point 33 sides hardly, and nearly all propagates to the 1st intersection point 32 sides.
Thus, the ratio of signal of the relative common mode of signal of the differential mode of propagating to the 1st variable matching circuit 6b can be further improved, and the ratio of signal of the relative differential mode of signal of the common mode of propagating to the 2nd variable matching circuit 6b can be further improved.
And, under this condition, also can according to when imported to the 1st terminal 23 and the 2nd terminal 24 phase difference be the absolute value of 180 degree and amplitude equate signal the time, the roughly the same mode of absolute value of the amplitude of the absolute value of the amplitude of the signal that the 2nd intersection point 33 sides of the 3rd circuit 30 occur, the signal that occurs with the 2nd intersection point 33 sides of the 4th circuit 31, design the line length of the 3rd circuit the 30, the 4th circuit 31, the 3rd match circuit the 36, the 4th match circuit 37 and the 3rd phaser the 40, the 4th phaser 41.The further precision of electric current of the signal of the differential mode that occurs at the 2nd intersection point 33 can be offset well, can be improved the ratio of signal component of the relative differential mode of common mode of the signal of propagating to the 2nd variable matching circuit 6b side from the 2nd intersection point 33.Thus, can be with the coefficient correlation that produces in the antenna element 27 signal of low common mode and the signal accuracy of differential mode separate well, can realize obtaining the diversity antenna of 2 low signals of coefficient correlation.
In addition, in Figure 10, also can adopt structure with at least 1 removal in the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit the 36, the 4th match circuit the 37, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser the 40, the 4th phaser 41.Thus, not only can reduce the loss in the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit 30 and the 4th circuit 31, and can reduce necessary components number, thereby can realize miniaturization, lightweight.
In addition, the 1st match circuit the 34, the 2nd match circuit the 35, the 3rd match circuit the 36, the 4th match circuit the 37, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser the 40, the 4th phaser 41 utilizes the circuit of reactance component to design basically, but also can utilize the circuit that contains resistive element, amplifying circuit etc. to design.Thus, not only can realize the high insulation characterisitic between the 1st variable matching circuit 6a and the 2nd variable matching circuit 6b, and can improve the Transceiver Features of the communicator 3 of Fig. 1.
Figure 11 is assembled into figure in the Anneta module with the 2nd antenna element that present embodiment 5 relates to.Wherein, at only putting down in writing same-sign, carry out following explanation with the different centers of constituting with the same formation of Figure 10.
In Figure 11, as antenna element 27, represented to use the situation of the dipole antenna (dipole antenna) that is made of following 2 pairs of antenna elements, described 2 pairs of antenna elements are meant: by Unit the 1st (element) 44 and the antenna element of Unit the 3rd 46 formations and the antenna element that is made of the 2nd unit 45 and the 4th unit 47.Among Figure 11, be provided with the 1st terminal 23, be provided with the 2nd terminal 24 in the end of the 4th unit 47 in the end of the 3rd unit 46.
Antenna element 27 relative lines 49 arbitrarily have the shape of line symmetry.Thus, the input impedance of the antenna element of observing from the 1st terminal 23 27, roughly the same with the input impedance of the antenna element of observing from the 2nd terminal 24 27, it is easy that the design of the 2nd antenna element 43 becomes.
And, the 1st circuit 28 that is connected with the 1st terminal 23 and the 3rd circuit 30, the 2nd circuit 29 that is connected with the 2nd terminal 24 and the 4th circuit the 31, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41 and active circuit 4 are configured in the top and the below of ground plate built-in in the communicator 3 48.
Designed the 1st circuit 28 and the 1st phaser 38 according to phase changing capacity for+90 modes of spending, designed the 2nd circuit 29 and the 2nd phaser 39 for-90 modes of spending according to phase changing capacity from the 2nd terminal 24 to the 1st intersection points 32 from the 1st terminal 23 to the 1st intersection points 32.And, designed the 3rd circuit 30 and the 3rd phaser 40 according to phase changing capacity for+90 modes of spending, designed the 4th circuit 31 and the 4th phaser 41 for+90 modes of spending according to phase changing capacity from the 2nd terminal 24 to the 1st intersection points 33 from the 1st terminal 23 to the 1st intersection points 33.
The 1st unit 44 and the 2nd unit 45 by almost parallel be disposed at the end of ground plate 48, the 3rd unit 46 and the 4th unit 47 generally perpendicularly are disposed at the end of ground plate 48.
The figure of the action when Figure 12 is the differential mode of the antenna element that relates to of expression present embodiment 5.In Figure 12, produce in the 1st unit 44 and the 2nd unit 45 towards consistent electric current (in Figure 12, use arrow diagramming), generation is towards opposite electric current in the 3rd unit 46 and the 4th unit 47.Therefore, the phase difference of the signal that produces in the 1st terminal 23 and the 2nd terminal 24 is 180 degree.When such signal is transfused to the 1st terminal 23 and the 2nd terminal 24, based on above-mentioned principle, signal occurs, but signal do not occur at the 2nd intersection point 33 at the 1st intersection point 32.
That is, when having produced the signal of differential mode in the antenna element 27, the 1st variable matching circuit 6a receives this signal, but the 2nd variable matching circuit 6b can't receive this signal.In addition, when from the 1st variable matching circuit 6a when antenna assembly 1 has been imported signal, this signal can not propagated to the 2nd variable matching circuit 6b, most signal is supplied with to antenna element 27.And the signal that is supplied to makes the electric current (Fig. 5 reference) of antenna element 27 generation differential modes, as electromagnetic wave and to aerial radiation.Current phasor on the antenna element 27 that helps to radiate mainly is the current phasor that produces in the 1st unit 44 and the 2nd unit 45, for the current phasor that produces in the 3rd unit 46 and the 4th unit 47, since current phasor towards on the contrary, so can not cut much ice to radiation.Radiation pattern when therefore, having produced differential mode in the antenna element 27 becomes by radiation pattern 50 such shown in the dotted line of Figure 12.Thus, when mainly receiving, on antenna element 27, produce differential mode, only can take out this signal from the 1st variable matching circuit 6a from the electromagnetic wave that arrives with respect to the 1st unit 44 and Unit the 2nd 45 vertical direction.
The figure of the action when Figure 13 is the common mode of the antenna element that relates to of expression present embodiment 5.In Figure 13, produce in the 1st unit 44 and the 2nd unit 45 towards opposite electric current (in Figure 13, use arrow diagramming), generation is towards consistent electric current in the 3rd unit 46 and the 4th unit 47.Therefore, the phase difference essence of the signal that produces in the 1st terminal 23 and the 2nd terminal 24 becomes 0 degree.When such signal is transfused to the 1st terminal 23 and the 2nd terminal 24, based on above-mentioned principle, signal occurs, but signal do not occur at the 2nd intersection point 33 at the 1st intersection point 32.That is, when having produced the signal of common mode in antenna element 27, the 2nd variable matching circuit 6b receives this signal, but the 1st variable matching circuit 6a does not receive this signal.In addition, when from the 2nd variable matching circuit 6b when antenna assembly 2 has been imported signal, this signal is not propagated to the 1st variable matching circuit 6a, most signal is supplied with to antenna element 27.
And the signal that is supplied to makes the electric current of antenna element 27 generation common modes, as shown in figure 13, and as electromagnetic wave and to aerial radiation.Current phasor on the antenna element 27 that helps to radiate mainly is the current phasor that produces in the 3rd unit 46 and the 4th unit 47, interlock and current phasor 52 on the ground plate 48 that produces with it.For the current phasor that produces in the 1st unit 44 and the 2nd unit 45 and since current phasor towards becoming rightabout, so can not cut much ice to radiation.Radiation pattern when therefore, having produced common mode in the antenna element 27 becomes the such radiation pattern 51 of dotting of Figure 13.Thus, when receiving mainly, produce common mode on the antenna element 27, only can take out this signal from the 2nd variable matching circuit 6b from the electromagnetic wave that arrives with respect to the 3rd unit 46 and Unit the 4th 47 vertical direction.
In sum, by adopting the antenna element with symmetric construction 27 (for example dipole antenna) shown in Figure 11～13,1 antenna element 27 can be used as the directive property diversity antenna.Thus, can realize miniaturization, the lightweight of Anneta module 1, because active circuit 4 can small integrated, so the supply of power supply and the 1st control signal becomes easy.
In addition, ground plate 48 also can be same with antenna element 27, and having with line 49 arbitrarily is benchmark and the shape of line symmetry.Thus, the design of directive property diversity antenna becomes easy.
The above-mentioned record relevant with the 2nd antenna element 43 is equally applicable to the situation of the 3rd antenna element 42 with 3 terminals of situation, Fig. 9 of the 1st antenna element 22 with 4 terminals of Fig. 8.
Figure 14 is the block diagram of the 1st antenna element that relates to of present embodiment 5.It is the antenna assembly that benchmark possesses 4 terminals of line symmetric shape that expression has with line 49 arbitrarily.Among Figure 14, with the 1st terminal 23 on the 1st terminal 23 and the 1st straight line (not shown) that the 2nd terminal 24 is connected and the mid point (not shown) of the 2nd terminal 24, be benchmark with the line vertical with the 1st straight line 49, antenna element 27 has the line symmetric shape in fact.
And with the 3rd terminal 25 on the 3rd terminal 25 and the 3rd straight line (not shown) that the 4th terminal 26 is connected and the mid point (not shown) of the 4th terminal 26, with respect to the line vertical with the 3rd straight line 49, antenna element 27 has the line symmetric shape in fact.As antenna element 27,, can make the design transfiguration of directive property diversity antenna easy by adopting such shape.
Figure 15 is the block diagram of the 3rd antenna element that relates to of present embodiment 5.It is the antenna assembly that benchmark possesses 3 terminals of line symmetric shape that expression has with line 49 arbitrarily.Among Figure 15, with the 1st terminal 23 on the 1st terminal 23 and the 1st straight line (not shown) that the 2nd terminal 24 is connected and the mid point (not shown) of the 2nd terminal 24, be benchmark with the line vertical with the 1st straight line 49, antenna element 27 has the line symmetric shape in fact.And, become the structure that there is the 3rd terminal 25 in essence on online 49.As antenna element 27,, can make the design transfiguration of directive property diversity antenna easy by adopting such shape.
In addition, in execution mode 5, adopted the antenna element (dipole antenna) of symmetric construction, but needn't be defined in the antenna element of symmetric construction, got final product, also can use the antenna element of non-symmetrical configuration so long as have the antenna element of 2 splicing ears at least.Be built in imagination under the situation in the miniature portable terminal such as mobile phone, because the space that antenna element allowed is considerably less, so be difficult to adopt the antenna element of symmetric construction.Therefore, if adopt antenna assembly of the present invention, even then when having adopted the antenna element 27 of non-symmetrical configuration, also can distinguish independently common mode and these 2 patterns of differential mode of receiving, producing in the transmitting antenna element 27, can be equivalently as 2 antenna elements performance functions.Thus, can realize the little miniaturized electronics of volume of accommodating Anneta module 1 is best antenna assembly.
From Figure 16 to Figure 25, represented that utilizing the input impedance by observing from the 1st terminal 23 is 50
The antenna element that the 1st unit 44 of Ω and the 3rd unit 46 constitute and be the 2nd unit 45 of 50 Ω and the antenna element that the 4th unit 47 constitutes from the input impedance that the 2nd terminal 24 is observed has designed an example of the 2nd antenna element 43 in frequency 620MHz.
The figure of the design example when Figure 16 is the differential mode of the 2nd antenna element that relates to of expression present embodiment 5.The figure of the design example when Figure 17 is the common mode of the 2nd antenna element that relates to of expression present embodiment 5.Consider the situation of antenna element 27 with the differential mode action.Because the form that becomes the antenna element that constitutes by the 1st unit 44 and the 3rd unit 46, is connected in series with the antenna element that constitutes by the 2nd unit 45 and the 4th unit 47, so the input impedance of the antenna element of observing from the 1st terminal 23 and the 2nd terminal 24 27 is 100 Ω.
Consider the situation of antenna element 27 with the common mode action.Because the form that becomes the antenna element that constitutes by the 1st unit 44 and the 3rd unit 46, is connected in parallel with the antenna element that constitutes by the 2nd unit 45 and the 4th unit 47, so the input impedance of the antenna element of observing from the 1st terminal 23 and the 2nd terminal 24 27 is 25 Ω.
Owing to reflected these facts in design, so the input impedance of the antenna element 27 of Figure 16 (port numbering is 3) is 100 Ω, the input impedance of the antenna element 27 of Figure 17 (port numbering is 6) is 25 Ω.And, because general high-frequency circuit designs with 50 Ω, so, their input impedance is made as 50 Ω designs for the 1st load circuit 53 (port numbering is 1) of Figure 16 and the 1st load circuit 53 (port numbering is 4) and the 2nd load circuit 54 (port numbering is 5) of the 2nd load circuit 54 (port numbering is 2) and Figure 17.Load when here, the 1st load circuit 53 has been represented to observe after 55 pairs of active circuits of input port that are connected with the 1st intersection point 32 4 from the active circuit 4 of Figure 11.And the load of the 2nd load circuit 54 when having represented to observe after 56 pairs of active circuits of input port that are connected with the 2nd intersection point 33 4 from the active circuit 4 of Figure 11.
In Figure 16 and Figure 17, the 1st phaser the 38, the 2nd phaser the 39, the 3rd phaser 40 and the 4th phaser 41 are realized by the reactance component of 3 elements respectively.
The figure that passes through characteristic when Figure 18 is the differential mode of the antenna assembly that relates to of expression present embodiment 5.Pass through characteristic between antenna element 27 (port numbering is 3) when Figure 18 has represented that the antenna element 27 shown in Figure 16 moves with differential mode and the 1st load circuit 53 (port numbering is 1) and the 2nd load circuit 54 (port numbering is 2).In Figure 18, for example, S (3,1) has represented from the pass through characteristic of the 1st load circuit 53 (port numbering is 1) to antenna element 27 (port numbering is 3).As shown in Figure 18, being roughly 0dB to the characteristic S (3,1) that passes through of antenna element 27 (port numbering is 3) from the 1st load circuit 53 (port numbering is 1) in frequency 620MHz, is conducting state.Relative with it, as can be known from the 2nd load circuit 54 (port numbering is 2) to the passing through characteristic S (3,2) and in frequency 620MHz be of antenna element 27 (port numbering is 3)-below the 30dB, obtained high insulation.And as can be known, for from the 1st load circuit 53 (port numbering is 1) to the 2nd load circuit 54 (port numbering is 2) pass through characteristic S (2,1), in frequency 620MHz also be-below the 30dB, obtained high insulation.
The figure that passes through characteristic when Figure 19 is the common mode of the antenna assembly that relates to of expression present embodiment 5.Pass through characteristic between antenna element 27 (port numbering is 6) when Figure 19 has represented that the antenna element 27 shown in Figure 17 moves with common mode and the 1st load circuit 53 (port numbering is 4) and the 2nd load circuit 54 (port numbering is 5).In Figure 19, for example S (6,4) has represented from the pass through characteristic of the 1st load circuit 53 (port numbering is 4) to antenna element 27 (port numbering is 6).According to Figure 19 as can be known, being roughly 0dB to the characteristic S (6,5) that passes through of antenna element 27 (port numbering is 6) from the 2nd load circuit 54 (port numbering is 5) in frequency 620MHz, is conducting state.Relative with it, as can be known from the 1st load circuit 53 (port numbering is 4) to the passing through characteristic S (6,4) and in frequency 620MHz be of antenna element 27 (port numbering is 6)-below the 30dB, obtained high insulation.And as can be known, for from the 1st load circuit 53 (port numbering is 4) to the 2nd load circuit 54 (port numbering is 5) pass through characteristic S (5,4), also in frequency 620MHz be-below the 30dB, obtained high insulation.
In summary, in fact can realize the action of above-mentioned the 1st antenna element the 22, the 3rd antenna element the 42, the 2nd antenna element 43.As a reference, in Figure 20～Figure 25, represented the impedance operator in each port of port numbering 1～6.Figure 20 is the figure of the impedance operator in the port numbering 1 of the antenna assembly that relates to of expression present embodiment 5.Equally, Figure 21 is the figure of the impedance operator in the expression port numbering 2, Figure 22 is the figure of the impedance operator in the expression port numbering 3, Figure 23 is the figure of the impedance operator in the expression port numbering 4, Figure 24 is the figure of the impedance operator in the expression port numbering 5, and Figure 25 is the figure of the impedance operator in the expression port numbering 6.
In Figure 20～Figure 25, the input impedance characteristic when for example S (1,1) has represented that the 1st intersection point 32 from Figure 11 is observed the 2nd antenna element 43.
Wherein, for the 1st antenna element the 22, the 2nd antenna element 43, the characteristic impedance of the 1st circuit the 28, the 2nd circuit the 29, the 3rd circuit the 30, the 4th circuit 31 all is Zo.The input impedance of the input impedance that also can be designed to observe from the 1st intersection point 32 of the 1st load circuit 53 that is connected with the 1st intersection point 32, the input impedance of observing from the 2nd intersection point 33 of the 2nd load circuit 54 that is connected with the 2nd intersection point 33, the antenna element 27 observed from the 1st terminal 23 and all be roughly Zo/2 from the input impedance of the antenna element 27 of the 2nd terminal 24 observations.Thus, obtain easily antenna element 27, with the impedance matching of the 1st load circuit 53 or the 2nd load circuit 54, can reduce reflection loss.As a reference, Figure 16, Figure 17 have satisfied above-mentioned impedance relationship, and the result shown in Figure 18～25, has realized good electrical characteristics.
In addition, in Fig. 8～Figure 10, constitute by 28,1 the 1st match circuit 34 of the 1st circuit and 1 the 1st phaser 38 between the 1st terminal 23 and the 1st intersection point 32, but also can constitute by a plurality of circuits, a plurality of match circuit, a plurality of phase circuit as 1 circuit.For between the 2nd terminal 24 and the 1st intersection point 32, between the 3rd terminal 25 and the 2nd intersection point 33, between the 4th terminal 26 and the 2nd intersection point 33 too.
And the 1st circuit, the 2nd circuit, the 3rd circuit, the 4th circuit also comprise situation about being made of a plurality of circuits.Equally, the 1st match circuit, the 2nd match circuit, the 3rd match circuit, the 4th match circuit also comprise situation about being made of a plurality of match circuits, and the 1st phaser, the 2nd phaser, the 3rd phaser, the 4th phaser also comprise situation about being made of a plurality of phasers.
(execution mode 6)
Below, utilize Figure 26～29 pair embodiments of the present invention 6 to describe.Figure 26 is the figure of the embodiment of the vehicle mounted antenna that relates to of expression present embodiment 6.Figure 26 is a skeleton diagram of representing for example the antenna assembly shown in the execution mode 5 to be applied to an embodiment in the vehicle mounted antenna of receiving television broadcasting, radio broadcasting, is the figure during from the indoor observation of car windshield 57.
In Figure 26, antenna element 27 shown in the execution mode 5 is formed on the 1st film antenna 58 on the transparent resin film, is secured at the car indoor of the upper area (for example the top board 59 apart from vehicle is that 10cm is with interior zone with the limit that windshield 57 joins) of windshield 57.
And the top of the 1st film antenna 58 (antenna element 27) in Figure 26 disposes the 1st circuit 60 that is connected with the 1st film antenna 58.The 1st circuit 60 is the circuit with active element 4 etc. of the circuit (being equivalent to the 1st match circuit the 34, the 1st phase circuit 38 etc.) that is configured in the 2nd antenna element 43 under the antenna element 27 and Fig. 1 etc.
And, the 1st circuit 60 and electronic unit 9 about by about 5m the 1st transmission line 14a be connected with the 2nd transmission line 14b.
Figure 27, Figure 28 have carried out illustrated figure from the car top to the embodiment shown in Figure 26.
Radiation pattern when Figure 27 is the differential mode of the vehicle mounted antenna that relates to of present embodiment 6.The radiation pattern 61 of the antenna assembly when Figure 27 has represented that the 1st terminal 23 (with reference to Figure 12) of the 1st film antenna 58 (antenna element 27) and the 2nd terminal 24 (with reference to Figure 12) encouraged the signal of differential mode.Radiation pattern 61 radiates based on principle illustrated in fig. 12.It is the radiation pattern during from the 2nd transmission line 14b receiving and transmitting signal.
Because top board 59 plays the effect of reflecting plate, so the directional gain of the place ahead direction of car is bigger than the directional gain of the rear direction of car.Thus, can be suppressed at that car indoorly is reflected, scattering is afterwards to the reception of the television broadcasting ripple of the 1st film antenna 58.Reflection during car is indoor, scattered wave be because the amplitude of time per unit, phase place change are big, so be under the situation of digital broadcasting in received television broadcasting, makes a mistake separating timing easily.Therefore, the antenna assembly 2 shown in the execution mode 6 can suppress can improve receiving feature to the reception from the indoor reflection of car, scattered wave.
Radiation pattern when Figure 28 is the common mode of the vehicle mounted antenna that relates to of present embodiment 6.The radiation pattern 62 of the antenna assembly when Figure 28 has represented that the 1st terminal 23 (with reference to Figure 12) of the 1st film antenna 58 (antenna element 27) and the 2nd terminal 24 (with reference to Figure 12) encouraged the signal of common mode.Radiation pattern 62 radiates based on principle illustrated in fig. 13.It is the radiation pattern during from the 1st transmission line 14a receiving and transmitting signal.
Because top board 59 plays the effect of reflecting plate, so the maximum direction of radiation pattern 62 tilts to the place ahead of car direction a little.
As Figure 27, shown in Figure 28, in radiation pattern 61 via the 1st transmission line 14a switching signal time the, the radiation pattern 62 with via the 2nd transmission line 14b switching signal the time, the peak value direction quadrature roughly of radiation pattern can be made, Anneta module 1 small-sized and that coefficient correlation is low can be realized.
For example, in Fig. 1, because carrying out power supply via the 1st transmission line 14a to active elements such as the 1st amplifier 7a, the 2nd amplifier 7b supplies with, so antenna assembly 2 needs the antenna element small-sized, that coefficient correlation is low, antenna element 27 of the present invention can be described as the optimal antenna element that has satisfied this condition.
In addition, in the above description, use the 2nd antenna element 43 shown in the execution mode 5 to be illustrated, but needn't limit therewith, utilize the antenna assembly shown in the execution mode 1～4 also can obtain same effect.
And, in Fig. 1, the 1st antenna 5a that can replace Anneta module 1, and use any 1 antenna element in the 3rd antenna element 42 of the 2nd antenna element 43, Fig. 9 of the 1st antenna element 22, Figure 10 of Fig. 8 (antenna element that the 1st antenna 5a of alternate figures 1 is used is called antenna element A later on).And, also can replace the 2nd antenna 5b and use any 1 antenna element in the 3rd antenna element 42 of the 2nd antenna element 43, Fig. 9 of the 1st antenna element 22, Figure 10 of Fig. 8 (will replace the 2nd antenna 5b of Fig. 1 later on and the antenna element that uses is called antenna element B).
Under this situation, active circuit 4 possesses: switch between the 1st intersection point 32 of antenna element A and the 2nd intersection point 33 with the corresponding the other side's who is connected of the 1st transmission line 14a the 1st switch (not shown) and at 2nd switch (not shown) of switching between the 1st intersection point 32 of antenna element B and the 2nd intersection point 33 with the corresponding the other side who is connected of the 2nd transmission line 14b.
Here, the 1st switch (not shown) and the 2nd switch (not shown) can be supplied to power supply via the 1st transmission line 14a from the power-supply circuit 16 of Fig. 1.
In addition, the 1st switch (not shown) and the 2nd switch (not shown) are based on the performance number that receives, the signal quality value (being equivalent to C/N characteristic, BER characteristic) of received signal, by the 1st control signal control that is supplied to via the 2nd transmission line 14b from the 1st control signal generation circuit 17a.
And, the 1st control signal that is supplied to via the 2nd transmission line 14b from the 1st control signal generation circuit 17a can have a plurality of magnitudes of voltage that are distinguished into different level, independently controls the 1st switch (not shown) and the 2nd switch (not shown) based on these a plurality of magnitudes of voltage.
Under the situation of the embodiment of Fig. 1, the supply of the 1st control signal is only undertaken by 1 circuit of the 2nd transmission line 14b, can imagine and be difficult to simultaneously and control the 1st switch (not shown), the 2nd switch (not shown) independently as 2 controlling object elements, but antenna assembly of the present invention 2 be owing to can utilize current potential width to the 1st control signal broadness, thus can be easily simultaneously and control the 1st switch (not shown), the 2nd switch (not shown) independently.
Thus, the antenna assembly of the diversity mode of small-sized 4 branches can be easily realized, receiving feature can be improved.
Figure 29 is the figure of the embodiment of the expression vehicle mounted antenna that used the antenna assembly that 2 groups of present embodiments 6 relate to.Represented to use the diversity mode antenna assembly (diversity reception mode that adds up to 8 branches) of 2 groups of above-mentioned 4 branches among Figure 29, the embodiment when having constructed the vehicle mounted TV receiving system.
In Figure 29, with above-mentioned antenna element A and antenna element B be formed on the 2nd film antenna 63 on the transparent resin film, with the 3rd film antenna 64 that above-mentioned antenna element A and antenna element B is formed on the transparent resin film, be secured at the car indoor of the upper area (for example, the top board 59 apart from car is that 10cm is with interior zone with the limit that windshield 57 joins) of windshield 57.
The 1st transmission line 14a that is connected with the 1st switch (not shown) of the top that is configured in the 2nd film antenna 63 is connected with electronic unit 9 with the 2nd transmission line 14b that is connected with the 2nd switch (not shown) of the top that is configured in the 2nd film antenna 63.Equally, the 3rd transmission line 14c that is connected with the 1st switch (not shown) of the top that is configured in the 3rd film antenna 64 is connected with electronic unit 9 with the 4th transmission line 14d that is connected with the 2nd switch (not shown) of the top that is configured in the 3rd film antenna 64.
By formation shown in Figure 29, can construct the diversity system of 8 branches, can easily realize the high communicator of receiving feature 3.
In addition, in the explanation of embodiments of the invention, carried out " connection " this record, this means electrical connection, for example can be based on the connection of welding, the connection of static, the connection of electromagnetism etc., so long as the method for attachment of signal that can transmit antenna gets final product.
More than, mainly the example according to diversity system describes the present invention, but application of the present invention is not limited thereto.For example, also can be used as the antenna assembly that the system that receives 2 above systems (for example, utilize the 1st antenna receiving television broadcasting, utilize the 2nd antenna to receive the system of the signal of mobile phone) or MIMO receive-transmit system use and use.
Utilizability on the industry
As mentioned above, antenna assembly of the present invention not be owing to need to prepare adjuster in active circuit, thus can realize the antenna assembly of small-sized diversity mode, can be in use in the small-sized communication terminal etc.

Claims (12)

1. antenna assembly possesses: from the 1st antenna and the 2nd antenna be transfused to the active circuit of received signal, corresponding the 1st transmission line that is connected with described the 1st antenna with corresponding the 2nd transmission line that is connected of described the 2nd antenna, wherein,
Be connected with electronic unit on the described antenna assembly,
From the power-supply circuit of described electronic unit via described the 1st transmission line to described active circuit supply power,
Supply with 1st control signal via described the 2nd transmission line to described active circuit from the 1st control signal generation circuit of described electronic unit, control described active circuit.
2. antenna assembly according to claim 1 is characterized in that,
Side in described the 1st antenna and described the 2nd antenna is the balanced type antenna, and the opposing party is unbalance type antenna.
3. antenna assembly according to claim 1 is characterized in that,
Described power-supply circuit is connected described the 1st transmission line trackside of the 1st high pass filter that is connected with described the 1st transmission line,
Described the 1st control signal generation circuit is connected described the 2nd transmission line trackside of the 2nd high pass filter that is connected with described the 2nd transmission line,
The progression of described the 2nd high pass filter is more than the progression of described the 1st high pass filter.
4. antenna assembly according to claim 1 is characterized in that,
Constitute described the 1st antenna and described the 2nd antenna by antenna element with following characteristics,
Described antenna element possesses:
Antenna element with the 1st terminal, the 2nd terminal, the 3rd terminal and the 4th terminal; The 1st circuit that one side is connected with described the 1st terminal; The 2nd circuit that one side is connected with described the 2nd terminal; The 3rd circuit that one side is connected with described the 3rd terminal; The 4th circuit that is connected with described the 4th terminal with a side;
The opposing party of described the 1st circuit is connected at the 1st intersection point with the opposing party of described the 2nd circuit,
The opposing party of described the 3rd circuit is connected at the 2nd intersection point with the opposing party of described the 4th circuit,
When described the 1st intersection point has been imported signal, the phase difference of the phase place of the phase place of the signal that described the 2nd intersection point side of described the 3rd circuit occurs, the signal that occurs with described the 2nd intersection point side of described the 4th circuit is roughly 180 degree,
When described the 1st terminal and described the 2nd terminal have been imported the signal of same phase and same-amplitude, the phase difference of the phase place of the phase place of the signal that described the 1st intersection point side of described the 1st circuit occurs, the signal that occurs with described the 1st intersection point side of described the 2nd circuit is roughly 180 degree
When imported phase difference to described the 1st terminal and described the 2nd terminal be the signal of 180 degree and same-amplitude or when described the 3rd terminal and described the 4th terminal have been imported phase difference and be the signal of 180 degree and same-amplitude, the phase difference of the phase place of the phase place of the signal that described the 2nd intersection point side of described the 3rd circuit occurs, the signal that occurs with described the 2nd intersection point side of described the 4th circuit is roughly 180 degree
Phase changing capacity from described the 1st terminal or described the 3rd terminal to described the 2nd intersection point is roughly+90 degree ± 180 degree * n, and wherein n is the integer more than 0,
Phase changing capacity from described the 2nd terminal or described the 4th terminal to described the 2nd intersection point is roughly+90 degree ± 180 degree * n, and wherein n is the integer more than 0,
Side's intersection point and described corresponding connection of the 1st transmission line in described the 1st intersection point of described antenna element and described the 2nd intersection point, the opposing party's intersection point and the corresponding connection of described the 2nd transmission line.
5. antenna assembly according to claim 1 is characterized in that,
Constitute described the 1st antenna and described the 2nd antenna by antenna element with following characteristics,
Described antenna element possesses: the antenna element with the 1st terminal and the 2nd terminal; The 1st circuit that one side is connected with described the 1st terminal; The 3rd circuit that one side is connected with described the 1st terminal; The 2nd circuit that one side is connected with described the 2nd terminal; The 4th circuit that is connected with described the 2nd terminal with a side,
The opposing party of the opposing party of described the 1st circuit and described the 2nd circuit is connected with the 1st intersection point,
The opposing party of the opposing party of described the 3rd circuit and described the 4th circuit is connected with the 2nd intersection point,
When described the 1st intersection point has been imported signal,
The phase difference of the phase place of the phase place of the signal that described the 2nd intersection point side of described the 3rd circuit occurs, the signal that occurs with described the 2nd intersection point side of described the 4th circuit is roughly 180 degree,
When described the 1st terminal and described the 2nd terminal have been imported the signal of same phase and same-amplitude, the phase difference of the phase place of the phase place of the signal that described the 1st intersection point side of described the 1st circuit occurs, the signal that occurs with described the 1st intersection point side of described the 2nd circuit is roughly 180 degree
When imported phase difference to described the 1st terminal and described the 2nd terminal is 180 degree, and during the signal of same-amplitude, the phase place of the signal that described the 2nd intersection point side of described the 3rd circuit occurs, the phase difference of the phase place of the signal that occurs with described the 2nd intersection point side of described the 4th circuit is roughly 180 degree, and the phase changing capacity from described the 1st terminal to described the 2nd intersection point is roughly+90 degree ± 180 degree * n, wherein n is the integer more than 0, phase changing capacity from described the 2nd terminal to described the 2nd intersection point is roughly+90 degree ± 180 degree * n, wherein n is the integer more than 0
Side's intersection point and described corresponding connection of the 1st transmission line in described the 1st intersection point of described antenna element and described the 2nd intersection point, the opposing party's intersection point and the corresponding connection of described the 2nd transmission line.
6. antenna assembly according to claim 1 is characterized in that,
Constitute described the 1st antenna and described the 2nd antenna by antenna element with following characteristics,
Described antenna element possesses: the antenna element with the 1st terminal, the 2nd terminal and the 3rd terminal; The 1st circuit that one side is connected with described the 1st terminal; The 2nd circuit that one side is connected with described the 2nd terminal; The 3rd circuit that is connected with described the 3rd terminal with a side,
The opposing party of the opposing party of described the 1st circuit and described the 2nd circuit is connected with the 1st intersection point,
The opposing party of described the 3rd circuit is connected with the 2nd intersection point,
When described the 2nd intersection point has been imported signal, the phase difference of the phase place of the phase place of the signal that described the 1st intersection point side of described the 1st circuit occurs, the signal that occurs with described the 1st intersection point side of described the 2nd circuit is roughly 180 degree,
When described the 1st terminal and described the 2nd terminal have been imported the signal of same phase and same-amplitude, the phase difference of the phase place of the phase place of the signal that described the 1st intersection point side of described the 1st circuit occurs, the signal that occurs with described the 1st intersection point side of described the 2nd circuit is roughly 180 degree
Side's intersection point and described corresponding connection of the 1st transmission line in described the 1st intersection point of described antenna element and described the 2nd intersection point, the opposing party's intersection point and the corresponding connection of described the 2nd transmission line.
7. antenna assembly according to claim 1 is characterized in that,
Described the 1st antenna is to select any 1 in accessory rights requirement 4 described antenna elements, the described antenna element of claim 5, the described antenna element of claim 6,
Described the 2nd antenna is to select any 1 from the described antenna element of described claim 4, the described antenna element of described claim 5, the described antenna element of described claim 6,
Described active circuit possesses: switch the 1st intersection point of described the 1st antenna of connection and the 1st switch of the 2nd intersection point corresponding to described the 1st transmission line; And switch the 1st intersection point that connects described the 2nd antenna and the 2nd switch of the 2nd intersection point corresponding to described the 2nd transmission line,
Described the 1st switch and described the 2nd switch are by described the 1st control signal control of supplying with via described the 2nd transmission line from described the 1st control signal generation circuit.
8. antenna assembly according to claim 7 is characterized in that,
Described the 1st control signal of supplying with via described the 2nd transmission line from described the 1st control signal generation circuit, have a plurality of magnitudes of voltage that are distinguished into different level, described the 1st switch and described the 2nd switch are independently controlled based on described a plurality of magnitudes of voltage.
9. antenna assembly according to claim 1 is characterized in that,
Described active circuit has and is transfused to from the received signal of the 3rd antenna and the 3rd transmission line of corresponding connection with described the 3rd antenna,
Supply with 2nd control signal via described the 3rd transmission line to described active circuit from the 2nd control signal generation circuit of described electronic unit, control described active circuit.
10. communicator, it possesses:
The antenna assembly that claim 1 is described; Be connected the demodulator circuit that is connected via the 2nd high pass filter with described the 2nd transmission line via the 1st high pass filter with described the 1st transmission line;
Described demodulator circuit is connected with described the 1st control signal generation circuit.
11. communicator according to claim 10 is characterized in that,
Described demodulator circuit carries out demodulation to the signal from described the 1st high pass filter and the input of described the 2nd high pass filter, derives signal quality value, and according to the signal quality value of deriving, described the 1st control signal generation circuit is controlled.
12. communicator according to claim 11 is characterized in that,
Have the testing circuit that the performance number from the signal of described the 1st high pass filter and described the 2nd high pass filter input is detected,
Described demodulator circuit is connected with described power-supply circuit,
Described demodulator circuit is controlled described power-supply circuit according to the signal quality value or the detected performance number of described testing circuit that are derived by described demodulator circuit.
CN200980129332.7A 2008-07-28 2009-07-27 Antenna device and communication equipment using same Expired - Fee Related CN102106092B (en)

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EP1686704A2 (en) * 2005-01-31 2006-08-02 Alps Electric Co., Ltd. Vehicle-mounted receiving apparatus

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JP2003304166A (en) * 2002-04-09 2003-10-24 Toyota Motor Corp Onboard antenna device
JP4076366B2 (en) * 2002-04-12 2008-04-16 富士通テン株式会社 Antenna switching device
JP4075920B2 (en) * 2005-04-04 2008-04-16 松下電器産業株式会社 Receiver
JPWO2007138682A1 (en) * 2006-05-30 2009-10-01 パナソニック株式会社 Portable radio

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