WO2010050149A1 - 携帯無線装置 - Google Patents
携帯無線装置 Download PDFInfo
- Publication number
- WO2010050149A1 WO2010050149A1 PCT/JP2009/005501 JP2009005501W WO2010050149A1 WO 2010050149 A1 WO2010050149 A1 WO 2010050149A1 JP 2009005501 W JP2009005501 W JP 2009005501W WO 2010050149 A1 WO2010050149 A1 WO 2010050149A1
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- WIPO (PCT)
- Prior art keywords
- frequency
- signal
- wireless
- filter
- matching circuit
- Prior art date
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Definitions
- the present invention relates to portable wireless devices, and more particularly to portable wireless devices that share one antenna element to operate multiple wireless systems simultaneously.
- the portable radio apparatus In recent years, the number of wireless systems installed in portable wireless devices has been steadily increasing. Also, in recent years, the portable radio apparatus has been miniaturized and thinned, and it is difficult to accommodate as many antenna elements as the number of radio systems mounted in a housing. Thus, conventionally, portable wireless devices share antenna elements in multiple wireless systems. That is, the conventional portable radio apparatus is equipped with an antenna element capable of supporting a plurality of radio systems.
- Such a portable wireless device shares an antenna element by switching the connection between the antenna element and a receiver provided for each wireless system using a switch according to a wireless system to be transmitted and received.
- a portable wireless device has a problem that it can not simultaneously operate a plurality of wireless systems.
- Patent Document 1 the matching circuit in the receiving system is disposed in the front stage of the filter, and the signal after impedance conversion by the matching circuit is input to the filter, so there is a problem that independent design of each matching circuit can not be performed. That is, in Patent Document 1, when the constant of each matching circuit is changed, the optimum constant of the other matching circuit is also changed. Therefore, when designing each matching circuit, the influence of the other matching circuits is taken into consideration. There is a need. Further, in Patent Document 1, it is necessary to perform frequency tuning with a duplexer to cope with a plurality of frequencies, so there is a problem that the circuit scale increases and the manufacturing cost increases.
- the present invention has been made in view of the foregoing points, and can provide a portable wireless device capable of independently designing each matching circuit, suppressing an increase in circuit scale, and reducing manufacturing costs.
- the purpose is
- a portable radio apparatus comprises an antenna, a first suppression means for suppressing a first frequency band of a signal received by the antenna, and a second suppression for suppressing a second frequency band of a signal received by the antenna.
- a second wireless means for acquiring data superimposed on the signal of the first frequency band, and connected between the first suppression means and the first wireless means, the first suppression means
- a first matching circuit for matching the impedance with the first wireless means, and a connection between the second suppressing means and the second wireless means, the second suppressing means and the second wireless means Second matching the impedance with the wireless means
- each matching circuit can be designed independently, an increase in circuit scale can be suppressed, and the manufacturing cost can be reduced.
- Block diagram showing the configuration of the portable radio apparatus according to Embodiment 1 of the present invention The figure which shows the pass characteristic of the filter which concerns on Embodiment 1 of this invention.
- a diagram for explaining an operation of converting into a characteristic impedance by the matching circuit according to the first embodiment of the present invention The figure which demonstrates the operation
- Block diagram showing the configuration of a portable radio apparatus according to Embodiment 2 of the present invention The figure which shows the impedance in the output of the antenna element which concerns on Embodiment 2 of this invention.
- the figure which shows the impedance in the output of the filter concerning Embodiment 2 of this invention The figure which shows the impedance in the output of the matching circuit concerning Embodiment 2 of this invention.
- the figure which shows the impedance in the output of the antenna element which concerns on Embodiment 2 of this invention The figure which shows the impedance in the output of the filter concerning Embodiment 2 of this invention
- FIG. 1 is a block diagram showing a configuration of mobile radio apparatus 100 according to Embodiment 1 of the present invention.
- the portable wireless device 100 mainly includes an antenna 101, a filter 102, a matching circuit 103, a wireless unit 104, a filter 105, a matching circuit 106, and a wireless unit 107.
- a series composed of the antenna 101, the filter 102, the matching circuit 103, and the radio unit 104 (hereinafter referred to as "first series") superimposes data on a signal of frequency f1. Both processing of transmission processing and reception processing of acquiring data superimposed on the signal of frequency f1 are performed.
- a series composed of antenna 101, filter 105, matching circuit 106, and radio section 107 (hereinafter referred to as "second series") is superimposed on signals of frequency f2 to frequency f3. Perform only reception processing to acquire the received data.
- the data to be superimposed on the signal processed in the first series is, for example, Bluetooth (registered trademark) data
- the data to be superimposed on the signal processed in the second series is, for example, digital television broadcast data It is.
- the components of the mobile wireless device 100 will be described in detail below.
- the antenna 101 functions as, for example, a monopole antenna and has an antenna element with an electrical length of 1 ⁇ 4 wavelength or less.
- the antenna 101 receives the signal of the wireless system 1 using the frequency f 1 and the signal of the wireless system 2 using the signals of the frequency f 2 to the frequency f 3, and outputs the received signals to the filter 102 and the filter 105. Furthermore, the antenna 101 transmits the signal of the wireless system 1 using the frequency f1 input from the filter 102.
- the wireless system 2 is wider than the wireless system 1.
- the frequency f1 is, for example, 2450 MHz.
- the frequency f2 is, for example, 475 MHz.
- the frequency f3 is, for example, 650 MHz.
- the filter 102 is, for example, a band elimination filter (BEF), suppresses the frequency f2 to the frequency f3 of the signal input from the antenna 101, and outputs a signal obtained by suppressing the frequency f2 to the frequency f3 to the matching circuit 103. Further, filter 102 suppresses frequency f2 to frequency f3 of the signal input from matching circuit 103, and outputs a signal obtained by suppressing frequency f2 to frequency f3 to antenna 101. That is, the filter 102 suppresses frequencies f2 to f3 used in the radio system 2 processing in the second series other than the radio system 1 processing in the first series. In addition, it is preferable that the filter 102 use what has the lowest passage loss of the frequency f1.
- BEF band elimination filter
- the matching circuit 103 is connected in series between the filter 102 and a wireless unit 104 described later, and matches the impedances of the filter 102 and the wireless unit 104. Specifically, matching circuit 103 converts the impedance of the signal input from filter 102 to characteristic impedance A ⁇ .
- the wireless unit 104 demodulates the signal input from the matching circuit 103, and acquires data superimposed on the frequency f1. Further, the wireless unit 104 performs modulation to superimpose data on the frequency f 1, and outputs the modulated signal to the matching circuit 103.
- the filter 105 is, for example, a band elimination filter (BEF), suppresses the frequency f1 of the signal input from the antenna 101, and outputs the signal with the frequency f1 suppressed to the matching circuit 106. That is, the filter 105 suppresses the frequency f1 used in the wireless system 1 processing in the first series other than the wireless system 2 processing in the second series. It is preferable that the filter 105 be used with the lowest possible pass loss of the frequency f2 to the frequency f3.
- BEF band elimination filter
- the matching circuit 106 is connected in series between the filter 105 and a wireless unit 107 described later, and matches the impedance of the filter 105 and the wireless unit 107. Specifically, matching circuit 106 converts the impedance of the signal input from filter 105 to wireless section 107 such that the output impedance of matching circuit 106 and the input impedance of wireless section 107 have a complex conjugate relationship. Output.
- Radio section 107 demodulates the signal input from matching circuit 106, and acquires data superimposed on frequency f2 to frequency f3.
- FIG. 2 is a view showing the pass characteristic of the filter 102
- FIG. 3 is a view showing the pass characteristic of the filter 105. As shown in FIG.
- FIG. 4 is a diagram for explaining the operation of converting to the characteristic impedance by the matching circuit 103.
- the point on the Smith chart is plotted at the position of f1 which is the center of the Smith chart.
- FIG. 5 is a diagram for explaining the operation of converting the impedance into a complex conjugate impedance by the matching circuit 106.
- the matching circuit 106 when matching the output impedance of the matching circuit 106, the matching circuit 106 outputs an output impedance Z1.
- the points on the Smith chart are plotted at the positions of f2a and f2b for the frequency f2.
- the frequency f3 is plotted at the positions of f3a and f3b.
- plotted f2a and f2b are plotted at symmetrical positions with respect to the horizontal axis # 503.
- plotted f3a and f3b are plotted at symmetrical positions with respect to the horizontal axis # 503.
- matching circuit 106 performs filter 105 so that the output impedance of matching circuit 106 and the input impedance of wireless section 107 have a complex conjugate relationship in the 475 MHz to 650 MHz wide band wireless system 2. Convert the impedance of the signal input from.
- each matching circuit can be designed independently, and an increase in circuit size can be suppressed, which reduces manufacturing costs. be able to.
- the signal of the wide band wireless system can be received by the antenna element having the electrical length shorter than usual.
- FIG. 6 is a block diagram showing a configuration of portable radio apparatus 600 according to Embodiment 2 of the present invention.
- the portable radio apparatus 600 shown in FIG. 6 adds an amplifier 601 to the portable radio apparatus 100 according to the first embodiment shown in FIG.
- the same components as in FIG. 1 will be assigned the same reference numerals, and the description thereof will be omitted.
- the mobile wireless device 600 mainly includes an antenna 101, a filter 102, a matching circuit 103, a wireless unit 104, a filter 105, a matching circuit 106, an amplifier 601, and a wireless unit 107.
- the series composed of the antenna 101, the filter 105, the matching circuit 106, the amplifier 601, and the wireless unit 107 is received to obtain data superimposed on signals of frequency f2 to frequency f3. Perform processing only.
- the matching circuit 106 is connected in series between the filter 105 and an amplifier 601 to be described later, and matches the impedance of the filter 105 and the amplifier 601. Specifically, the matching circuit 106 converts the impedance of the signal input from the filter 105 to the amplifier 601 so that the impedance of the signal input from the filter 105 has a relationship between the input impedance of the wireless unit 107 and the complex conjugate. Output.
- the amplifier 601 amplifies the signal input from the matching circuit 106 and outputs the amplified signal to the wireless unit 107.
- the input impedance is a complex impedance
- the output impedance is a characteristic impedance B ⁇ .
- the amplifier 601 preferably has a gain of 0 dB or more at frequencies f2 to f3, and has a gain as high as possible and a low noise figure (NF) at frequencies f2 to f3.
- the wireless unit 107 demodulates the signal input from the amplifier 601 and acquires data superimposed on the frequency f2 to the frequency f3.
- FIGS. 7 to 9 are diagrams representing the change in impedance in the first series by a Smith chart
- FIGS. 10 to 13 are diagrams representing the change in impedance in the second series by a Smith chart.
- FIG. 7 shows the impedance at the output of the antenna 101
- FIG. 8 shows the impedance at the output of the filter 102
- FIG. 9 shows the impedance at the output of the matching circuit 103.
- FIG. 10 shows the impedance at the output of the antenna 101
- FIG. 11 shows the impedance at the output of the filter 105
- FIG. 12 shows the impedance at the output of the matching circuit 106.
- FIG. 13 is a diagram showing the impedance at the input of the amplifier 601.
- m1 has an impedance of 5.815-j70.250 at a frequency of 475.0 MHz
- m2 has an impedance of 3.500-j35.137 at a frequency of 650.0 MHz
- the signal of the wireless system performing transmission is processed in the first series, and the signal of the wireless system performing only reception and the signal of the wireless system using the band within the band of the amplifier 601 are the second series. To process.
- each matching circuit can be designed independently, and an increase in circuit size can be suppressed, thereby reducing the manufacturing cost. it can.
- the signal of the wide band wireless system can be received by the antenna element having the electrical length shorter than usual.
- FIG. 14 is a block diagram showing a configuration of portable radio apparatus 1400 according to Embodiment 3 of the present invention.
- the portable wireless device 1400 includes an antenna 1401, a filter 1402, a matching circuit 1403, a wireless unit 1404, a filter 1405, a matching circuit 1406, a wireless unit 1407, a filter 1408, a matching circuit 1409, an amplifier 1410 and , And a wireless unit 1411.
- a series (hereinafter referred to as "third series") including antenna 1401, filter 1402, matching circuit 1403 and radio unit 1404 superimposes data on a signal of frequency f11. Both processing of transmission processing and reception processing of acquiring data superimposed on the signal of the frequency f11 are performed.
- a series (hereinafter, referred to as "fourth series”) including antenna 1401, filter 1405, matching circuit 1406, and radio unit 1407 superposes data on a signal of frequency f12. Both processing of transmission processing and reception processing of acquiring data superimposed on the signal of the frequency f12 are performed.
- a series (hereinafter, referred to as "fifth series") including antenna 1401, filter 1408, matching circuit 1409, amplifier 1410, and radio section 1411 has frequency f13 to frequency f14. Only the reception process for acquiring the data superimposed on the signal of.
- the antenna 1401 functions as, for example, a monopole antenna and includes an antenna element with an electrical length of 1 ⁇ 4 wavelength or less.
- the antenna 1401 receives a signal of the wireless system 11 using the frequency f11, a signal of the wireless system 12 using the frequency f12, and a signal of the wireless system 13 using the frequency f13 to the frequency f14, and filters each received signal It outputs to 1402, the filter 1405 and the filter 1408.
- the antenna 1401 transmits a signal of the wireless system 11 using the frequency f11 input from the filter 1402 or a signal of the wireless system 12 using the frequency f12 input from the filter 1405.
- the wireless system 13 is wider than the wireless system 11 and the wireless system 12.
- the filter 1402 is, for example, a band elimination filter (BEF), and suppresses the frequency f12 and the frequency f13 to the frequency f14 of the signal input from the antenna 1401 and matches the signal in which the frequency f12 and the frequency f13 to the frequency f14 are suppressed. Output to the circuit 1403.
- the filter 1402 suppresses the frequency f12 and the frequency f13 to the frequency f14 of the signal input from the matching circuit 1403 and outputs a signal obtained by suppressing the frequency f12 and the frequency f13 to the frequency f14 to the antenna 1401.
- the filter 1402 has a frequency f12 used in the wireless system 12 processing the fourth series and frequencies f13 to f14 used in the wireless system 13 processing the fifth series, other than the wireless system 11 processing the third series. Suppress In addition, it is preferable that the filter 1402 use what has the lowest passage loss of the frequency f11.
- the matching circuit 1403 is connected in series between the filter 1402 and a wireless unit 1404 described later, and matches the impedance of the filter 1402 and the wireless unit 1404. Specifically, matching circuit 1403 converts the impedance of the signal input from filter 1402 into characteristic impedance C ⁇ .
- the wireless unit 1404 demodulates the signal input from the matching circuit 1403 and acquires data superimposed on the frequency f11. Further, the wireless unit 1404 performs modulation in which data is superimposed on the frequency f11, and outputs the modulated signal to the matching circuit 1403.
- the filter 1405 is, for example, a band elimination filter (BEF), and suppresses the frequency f11 and the frequency f13 to the frequency f14 of the signal input from the antenna 1401 and matches the signal in which the frequency f11 and the frequency f13 to the frequency f14 are suppressed. Output to the circuit 1406. In addition, the filter 1405 suppresses the frequency f11 and the frequency f13 to the frequency f14 of the signal input from the matching circuit 1406, and outputs a signal obtained by suppressing the frequency f11 and the frequency f13 to the frequency f14 to the antenna 1401.
- BEF band elimination filter
- the filter 1405 has a frequency f11 used in the wireless system 11 processing the third series and frequencies f13 to f14 used in the wireless system 13 processing the fifth series, other than the wireless system 12 processing the fourth series Suppress In addition, it is preferable that the filter 1405 be used that has a low pass loss of the frequency f12 as much as possible.
- the matching circuit 1406 is connected in series between the filter 1405 and a wireless unit 1407 described later, and matches the impedance of the filter 1405 with the wireless unit 1407. Specifically, matching circuit 1406 converts the impedance of the signal input from filter 1405 into characteristic impedance D ⁇ .
- the wireless unit 1407 demodulates the signal input from the matching circuit 1406 and acquires data superimposed on the frequency f12. Further, the wireless unit 1407 performs modulation in which data is superimposed on the frequency f12, and outputs the modulated signal to the matching circuit 1406.
- the filter 1408 is, for example, a band elimination filter (BEF), suppresses the frequency f11 and the frequency f12 of the signal input from the antenna 1401, and outputs a signal obtained by suppressing the frequency f11 and the frequency f12 to the matching circuit 1409. That is, the filter 1408 suppresses the frequency f11 used in the wireless system 11 processing in the third series and the frequency f12 used in the wireless system 12 processing in the fourth series other than the wireless system 13 processing in the fifth series . As the filter 1408, it is preferable to use one with the lowest possible pass loss of the frequency f13 to the frequency f14.
- BEF band elimination filter
- Matching circuit 1409 is connected in series between filter 1408 and an amplifier 1410 described later, and matches the impedance of filter 1408 with amplifier 1410. Specifically, matching circuit 1409 converts the impedance of the signal input from filter 1408 and outputs the converted signal to amplifier 1410 such that the output impedance of matching circuit 1409 and the input impedance of amplifier 1410 have a complex conjugate relationship. .
- the amplifier 1410 amplifies the signal input from the matching circuit 1409 and outputs the amplified signal to the wireless unit 1411.
- the input impedance of the amplifier 1410 and the output impedance of the matching circuit 1409 have a relationship of complex conjugate, and the output impedance of the amplifier 1410 is a characteristic impedance E ⁇ .
- the amplifier 1410 preferably has a gain of 0 dB or more at frequencies f13 to f14, and has a gain as high as possible and a low noise figure (NF) at frequencies f13 to f14.
- the wireless unit 1411 demodulates the signal input from the amplifier 1410, and acquires data superimposed on the frequency f13 to the frequency f14.
- the signal of the wireless system performing transmission is processed in the third or fourth series, and the signal of the wireless system performing only reception and the signal of the wireless system using the band within the band of the amplifier 1410 are Process in the fifth series.
- the above-described embodiment is also applied to the portable radio apparatus including the three processing sequences of the third and fourth sequences for performing transmission and reception processing and the fifth sequence for performing only reception processing.
- the same effect as 1 can be obtained.
- by using an amplifier having as high gain as possible and low noise figure (NF) in the reception band the increase of noise is suppressed as much as possible, and a desired received signal can be obtained. It is possible to amplify and improve the reception sensitivity.
- NF noise figure
- the signal of the wireless system 13 is amplified by the amplifier
- the present embodiment is not limited to this, and the amplifier may be deleted.
- FIG. 15 is a block diagram showing a configuration of portable radio apparatus 1500 according to Embodiment 4 of the present invention.
- the portable wireless device 1500 includes an antenna 1501, a filter 1502, a matching circuit 1503, a wireless unit 1504, a filter 1505, a matching circuit 1506, an amplifier 1507, a wireless unit 1508, a filter 1509, and a matching circuit 1510. , An amplifier 1511 and a wireless unit 1512.
- a series (hereinafter referred to as "sixth series”) including antenna 1501, filter 1502, matching circuit 1503, and radio unit 1504 superimposes data on a signal of frequency f21. Both processing of transmission processing and reception processing of acquiring data superimposed on the signal of the frequency f21 are performed.
- a series (hereinafter referred to as the “seventh series”) formed of antenna 1501, filter 1505, matching circuit 1506, amplifier 1507, and radio section 1508 has frequency f22 to frequency f23. Only the reception process for acquiring the data superimposed on the signal of.
- a series (hereinafter, referred to as "eighth series") including antenna 1501, filter 1509, matching circuit 1510, amplifier 1511 and radio unit 1512 has frequency f24 to frequency f25. Only the reception process for acquiring the data superimposed on the signal of.
- the components of the mobile wireless device 1500 will be described in detail below.
- the antenna 1501 functions as, for example, a monopole antenna and includes an antenna element with an electrical length of 1 ⁇ 4 wavelength or less.
- the antenna 1501 receives and receives the signal of the wireless system 21 using the frequency f21, the signal of the wireless system 22 using the frequency f22 to the frequency f23, and the signal of the wireless system 23 using the frequency f24 to the frequency f25.
- the signal is output to filter 1502, filter 1505 and filter 1509. Further, the antenna 1501 transmits the signal of the wireless system 21 using the frequency f21 input from the filter 1502.
- the wireless system 22 and the wireless system 23 are wider than the wireless system 21.
- the filter 1502 is, for example, a band elimination filter (BEF), and suppresses the frequencies f22 to f23 and the frequencies f24 to f25 of the signal input from the antenna 1501, and the frequencies f22 to f23 and the frequencies f24 to f25. Are output to the matching circuit 1503.
- filter 1502 suppresses frequency f22 to frequency f23 and frequency f24 to frequency f25 of the signal input from matching circuit 1503 and suppresses the signal having frequency f22 to frequency f23 and frequency f24 to frequency f25 to antenna 1501. Output.
- the filter 1502 uses frequencies f22 to f23 used in the radio system 22 processing in the seventh series and frequencies f24 to use in the radio system 23 processing in the eighth series other than the radio system 21 processing the sixth series. Suppress the frequency f25. It is preferable that the filter 1502 has a low pass loss of the frequency f21 as much as possible.
- the matching circuit 1503 is connected in series between the filter 1502 and a wireless unit 1504 to be described later, and matches the impedance of the filter 1502 with the wireless unit 1504. Specifically, matching circuit 1503 converts the impedance of the signal input from filter 1502 into characteristic impedance F ⁇ .
- the wireless unit 1504 demodulates the signal input from the matching circuit 1503 and acquires data superimposed on the frequency f21. Further, the wireless unit 1504 performs modulation in which data is superimposed on the frequency f21, and outputs the modulated signal to the matching circuit 1503.
- the filter 1505 is, for example, a band elimination filter (BEF), and suppresses the frequency f21 and the frequency f24 to the frequency f25 of the signal input from the antenna 1501 and matches the signal in which the frequency f21 and the frequency f24 to the frequency f25 are suppressed. It outputs to the circuit 1506. That is, the filter 1505 has a frequency f21 used in the wireless system 21 processing the sixth series and frequencies f24 to f25 used in the wireless system 23 processing the eighth series, other than the wireless system 22 processing the seventh series. Suppress As the filter 1505, it is preferable to use one with the lowest possible passage loss of the frequency f22 to the frequency f23.
- BEF band elimination filter
- the matching circuit 1506 is connected in series between the filter 1505 and an amplifier 1507 described later, and matches the impedance of the filter 1505 with the amplifier 1507. Specifically, matching circuit 1506 converts the impedance of the signal input from filter 1505 and outputs it to amplifier 1507 such that the output impedance of matching circuit 1506 and the input impedance of amplifier 1507 have a complex conjugate relationship. .
- the amplifier 1507 amplifies the signal input from the matching circuit 1506 and outputs the amplified signal to the wireless unit 1508.
- the input impedance of the amplifier 1507 and the output impedance of the matching circuit 1506 have a relationship of complex conjugate, and the output impedance of the amplifier 1507 is characteristic impedance G ⁇ .
- the amplifier 1507 preferably has a gain of 0 dB or more at frequencies f22 to f23, and has a gain as high as possible and a low noise figure (NF) at frequencies f22 to f23.
- the wireless unit 1508 demodulates the signal input from the amplifier 1507 and acquires data superimposed on the frequency f22 to the frequency f23.
- the filter 1509 is, for example, a band elimination filter (BEF), and suppresses the frequency f21 and the frequency f22 to the frequency f23 of the signal input from the antenna 1501, and the signal obtained by suppressing the frequency f21 and the frequency f22 to the frequency f23 is a matching circuit 1510 Output to That is, the filter 1509 has a frequency f21 used in the wireless system 21 processing the sixth series, and a frequency f22 to a frequency f23 used in the wireless system 22 processing the seventh series, other than the wireless system 23 processing the eighth series. Suppress Note that it is preferable to use a filter 1509 that has the lowest possible pass loss at frequencies f24 to f25.
- BEF band elimination filter
- the matching circuit 1510 is connected in series between the filter 1509 and an amplifier 1511 described later, and matches the impedance of the filter 1509 with the amplifier 1511. Specifically, matching circuit 1510 converts the impedance of the signal input from filter 1509 and outputs the converted signal to amplifier 1511 so that the output impedance of matching circuit 1510 and the input impedance of amplifier 1511 have a complex conjugate relationship. .
- the amplifier 1511 amplifies the signal input from the matching circuit 1510 and outputs the amplified signal to the wireless unit 1512. At this time, the input impedance of the amplifier 1511 and the output impedance of the matching circuit 1510 have a relationship of complex conjugate, and the output impedance of the amplifier 1511 is the characteristic impedance H ⁇ .
- the amplifier 1511 preferably has a gain of 0 dB or more in the frequency f24 to the frequency f25, and has a gain as high as possible and a low noise figure (NF) in the frequency f24 to the frequency f25.
- the wireless unit 1512 demodulates the signal input from the amplifier 1511 to acquire data superimposed on the frequency f24 to the frequency f25.
- the signal of the wireless system performing transmission is processed in the sixth sequence, and the signal of the wireless system performing only reception and the signal of the wireless system using the band within the band of the amplifier 1507 are the seventh sequence. While processing, the signal of the wireless system performing only reception and the signal of the wireless system using the band within the band of the amplifier 1511 are processed in an eighth sequence.
- the above-described embodiment is also applied to the portable radio apparatus including the three processing sequences of the sixth sequence performing transmission / reception processing and the seventh and eighth sequences performing only reception processing.
- the same effect as 1 can be obtained.
- by using an amplifier having as high gain as possible and low noise figure (NF) in the reception band the increase of noise is suppressed as much as possible, and a desired received signal can be obtained. It is possible to amplify and improve the reception sensitivity.
- NF noise figure
- the signals of the wireless system 22 and the wireless system 23 are amplified by the amplifier, the present embodiment is not limited to this, and one or both amplifiers of the wireless system 22 and the wireless system 23 may be used. You may delete it.
- FIG. 16 is a block diagram showing a configuration of portable radio apparatus 1600 according to Embodiment 5 of the present invention.
- the portable wireless device 1600 mainly includes an antenna 1601, a filter 1602, a matching circuit 1603, a wireless unit 1604, a filter 1605, a matching circuit 1606, an amplifier 1607, a wireless unit 1608, and a wireless unit 1609. Configured
- a series (hereinafter referred to as "the ninth series") including antenna 1601, filter 1602, matching circuit 1603 and radio section 1604 superimposes data on a signal of frequency f31. Both the transmission processing and the reception processing for acquiring data superimposed on the signal of the frequency f31 are performed.
- a series (hereinafter, referred to as "tenth series”) including antenna 1601, filter 1605, matching circuit 1606, amplifier 1607, and radio section 1608 has frequency f32 to frequency f33. Only the reception process for acquiring the data superimposed on the signal of.
- a series (hereinafter referred to as "the 11th series") including antenna 1601, filter 1605, matching circuit 1606, amplifier 1607, and radio section 1609 has frequency f34 to frequency f35. Only the reception process for acquiring the data superimposed on the signal of.
- the components of the mobile wireless device 1600 will be described in detail below.
- the antenna 1601 functions as, for example, a monopole antenna and includes an antenna element with an electrical length of 1 ⁇ 4 wavelength or less.
- the antenna 1601 receives and receives the signal of the wireless system 31 using the frequency f31, the signal of the wireless system 32 using the frequency f32 to the frequency f33, and the signal of the wireless system 33 using the frequency f34 to the frequency f35.
- the signal is output to filter 1602 and filter 1605.
- the antenna 1601 transmits a signal of the wireless system 31 using the frequency f31 input from the filter 1602.
- the wireless system 32 and the wireless system 33 are wider than the wireless system 31.
- the filter 1602 is, for example, a band elimination filter (BEF), suppresses the frequency f32 to the frequency f35 of the signal input from the antenna 1601, and outputs a signal obtained by suppressing the frequency f32 to the frequency f35 to the matching circuit 1603.
- the filter 1602 suppresses the frequency f32 to the frequency f35 of the signal input from the matching circuit 1603 and outputs a signal obtained by suppressing the frequency f32 to the frequency f35 to the antenna 1601. That is, the filter 1602 uses frequencies f32 to f33 used in the radio system 32 for processing in the tenth series, and frequencies f34 to f3 used in the radio system 33 for processing in the eleventh series, other than the radio system 31 processing in the ninth series. Suppress the frequency f35. In addition, it is preferable that the filter 1602 use what has the lowest passage loss of the frequency f31.
- the matching circuit 1603 is connected in series between the filter 1602 and a wireless unit 1604 to be described later, and matches the impedance of the filter 1602 with the wireless unit 1604. Specifically, matching circuit 1603 converts the impedance of the signal input from filter 1602 into characteristic impedance I ⁇ .
- the wireless unit 1604 demodulates the signal input from the matching circuit 1603 and acquires data superimposed on the frequency f31. In addition, the wireless unit 1604 performs modulation in which data is superimposed on the frequency f31, and outputs the modulated signal to the matching circuit 1603.
- the filter 1605 is, for example, a band elimination filter (BEF), suppresses the frequency f31 of the signal input from the antenna 1601, and outputs a signal obtained by suppressing the frequency f31 to the matching circuit 1606. That is, the filter 1605 suppresses the frequency f31 used in the radio system 31 processing the eleventh series other than the radio system 32 and the radio system 33 processing the tenth series and the eleventh series. It is preferable that the filter 1605 should have the lowest possible passage loss of the frequency f32 to the frequency f35.
- BEF band elimination filter
- the matching circuit 1606 is connected in series between the filter 1605 and an amplifier 1607 described later, and matches the impedance of the filter 1605 with the amplifier 1607. Specifically, matching circuit 1606 converts the impedance of the signal input from filter 1605 and outputs it to amplifier 1607 such that the output impedance of matching circuit 1606 and the input impedance of amplifier 1607 have a complex conjugate relationship. .
- the amplifier 1607 amplifies the signal input from the matching circuit 1606 and outputs the amplified signal to the wireless unit 1608 and the wireless unit 1609. At this time, the input impedance of the amplifier 1607 and the output impedance of the matching circuit 1606 have a complex conjugate relationship, and the output impedance of the amplifier 1607 is a characteristic impedance J ⁇ .
- the amplifier 1607 preferably has a gain of 0 dB or more at frequencies f32 to f35, and has a gain as high as possible and a low noise figure (NF) at frequencies f32 to f35.
- the wireless unit 1608 demodulates the signal input from the amplifier 1607 and acquires data superimposed on the frequency f32 to the frequency f33.
- the wireless unit 1609 demodulates the signal input from the amplifier 1607 and acquires data superimposed on the frequency f34 to the frequency f35.
- the signal of the wireless system performing transmission is processed in the ninth series, and the signal of the wireless system performing only reception and the signal of the wireless system using the band within the band of the amplifier 1607 is the tenth series or Process in the 11th series.
- the portable radio apparatus including three processing sequences of the ninth sequence performing transmission / reception processing and the tenth and eleventh sequences performing only the reception processing and sharing the amplifier.
- the same effects as those of the first embodiment can be obtained.
- the signal of the wireless system 32 and the signal of the wireless system 33 are amplified by the amplifier, but the present embodiment is not limited to this, and the amplifier may be deleted. Further, in the present embodiment, the signal processed in the tenth series and the signal processed in the eleventh series have different frequency bands, but the present embodiment is not limited to this, and the same or partially overlapping frequency bands The signals of the wireless system that uses the may be processed by the tenth sequence and the eleventh sequence, respectively.
- each signal of a plurality of wireless systems is converted into a characteristic impedance and an impedance that is in a relation of complex conjugate according to the band to be used.
- all signals of a plurality of wireless systems may be converted to characteristic impedance, or all signals of a plurality of wireless systems may be converted to an impedance which is in a relation of complex conjugate and each circuit may be connected. .
- the series of broadband wireless systems is exclusively used for reception, but the present invention is not limited to this, and the series of broadband wireless systems can be both transmitted and received, or transmission Only the process may be performed. In this case, it is necessary to delete the amplifier.
- the signal of the narrow band wireless system and the signal of the wide band wireless system are respectively processed, but the present invention is not limited to this, and a plurality of wide band wireless systems Only signals may be processed respectively, or only signals of a plurality of narrow band radio systems may be processed.
- both transmission and reception processing are performed, but the present invention is not limited to this and either transmission or reception may be performed. Only one or the other may be performed.
- the portable radio apparatus according to the present invention is particularly suitable for simultaneously operating a plurality of radio systems by sharing one antenna element.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Support Of Aerials (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る携帯無線装置100の構成を示すブロック図である。
図6は、本発明の実施の形態2に係る携帯無線装置600の構成を示すブロック図である。
図14は、本発明の実施の形態3に係る携帯無線装置1400の構成を示すブロック図である。
図15は、本発明の実施の形態4に係る携帯無線装置1500の構成を示すブロック図である。
図16は、本発明の実施の形態5に係る携帯無線装置1600の構成を示すブロック図である。
Claims (7)
- アンテナと、
前記アンテナにより受信した信号の第1周波数帯を抑圧する第1の抑圧手段と、
前記アンテナにより受信した信号の第2周波数帯を抑圧する第2の抑圧手段と、
前記第1周波数帯を抑圧した信号を復調して前記第2周波数帯の信号に重畳されたデータを取得する第1の無線手段と、
前記第2周波数帯を抑圧した信号を復調して前記第1周波数帯の信号に重畳されたデータを取得する第2の無線手段と、
前記第1の抑圧手段と前記第1の無線手段との間に接続され、前記第1の抑圧手段と前記第1の無線手段とのインピーダンスを整合する第1の整合回路と、
前記第2の抑圧手段と前記第2の無線手段との間に接続され、前記第2の抑圧手段と前記第2の無線手段とのインピーダンスを整合する第2の整合回路と、
を具備する携帯無線装置。 - 前記第2の無線手段は、前記第2周波数帯よりも広帯域の前記第1周波数帯の信号に重畳されたデータを取得する請求項1記載の携帯無線装置。
- 前記第1の無線手段は、前記第2周波数帯の信号に重畳されたブルートゥースのデータを取得し、
前記第2の無線手段は、前記第1周波数帯の信号に重畳されたディジタルテレビ放送のデータを取得する請求項2記載の携帯無線装置。 - 前記第1の無線手段は、前記復調、または前記第2周波数帯の信号にデータを重畳する変調の少なくともいずれか1つの処理を行い、
前記第2の無線手段は、前記復調のみを行い、
前記第1の抑圧手段は、前記第1の無線手段により前記変調を行う場合に、前記変調された信号の前記第1周波数帯を抑圧し、
前記アンテナは、前記第1周波数帯を抑圧された信号を送信する請求項1記載の携帯無線装置。 - 前記第2の整合回路によりインピーダンスを整合した信号を増幅する増幅手段を具備し、
前記第2の無線手段は、前記増幅した信号を復調して前記第1周波数帯の信号に重畳されたデータを取得する請求項1記載の携帯無線装置。 - 前記第1の整合回路は、前記第1の抑圧手段と前記第1の無線手段とのインピーダンスが特性インピーダンスになるように整合し、
前記第2の整合回路は、前記第2の抑圧手段と前記第2の無線手段とのインピーダンスが複素共役になるように整合する請求項1記載の携帯無線装置。 - 前記アンテナは、4分の1波長以下のアンテナ素子を有する請求項1記載の携帯無線装置。
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US13/126,743 US20110206165A1 (en) | 2008-10-30 | 2009-10-20 | Mobile wireless apparatus |
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JP2008280335A JP2010109757A (ja) | 2008-10-30 | 2008-10-30 | 携帯無線装置 |
JP2008-280335 | 2008-10-30 |
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WO2013014458A1 (en) * | 2011-07-26 | 2013-01-31 | The University Of Birmingham | Multi-output antenna |
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US9190712B2 (en) | 2012-02-03 | 2015-11-17 | Apple Inc. | Tunable antenna system |
US20130214979A1 (en) * | 2012-02-17 | 2013-08-22 | Emily B. McMilin | Electronic Device Antennas with Filter and Tuning Circuitry |
GB2501487A (en) * | 2012-04-24 | 2013-10-30 | Renesas Mobile Corp | Multiple frequency antenna involving filter and impedance matching arrangements |
WO2019131077A1 (ja) | 2017-12-25 | 2019-07-04 | 株式会社村田製作所 | スイッチモジュールおよび通信装置 |
KR102615984B1 (ko) * | 2019-08-14 | 2023-12-21 | 삼성전자주식회사 | 안테나 설정을 조정하는 전자 장치 및 그 동작 방법 |
CN115548683A (zh) * | 2022-09-23 | 2022-12-30 | 维沃移动通信有限公司 | 天线模组和电子设备 |
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