WO2011132348A1 - 移相器 - Google Patents
移相器 Download PDFInfo
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- WO2011132348A1 WO2011132348A1 PCT/JP2011/000272 JP2011000272W WO2011132348A1 WO 2011132348 A1 WO2011132348 A1 WO 2011132348A1 JP 2011000272 W JP2011000272 W JP 2011000272W WO 2011132348 A1 WO2011132348 A1 WO 2011132348A1
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- degree
- phase
- phase shifter
- degrees
- signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/20—Two-port phase shifters providing an adjustable phase shift
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
Definitions
- the present invention relates to a phase shifter.
- FIG. 15 is a diagram showing a wireless communication apparatus that automatically performs antenna alignment.
- the wireless communication device 63 transmits a wireless signal while changing the direction of the radiation angle.
- One wireless communication device 64 measures the S / N (signal-noise ratio) of the received wireless signal and transmits the measured value to the wireless communication device 63. Based on the notified measurement value, the wireless communication device 63 calculates a radiation angle that maximizes the S / N, and performs communication using the radiation angle.
- S / N signal-noise ratio
- An array antenna is an antenna in which a plurality of antenna elements are arranged in an array.
- the radiation angle is controlled by controlling the phase of the radio signal transmitted from each antenna element.
- a phase shifter is used for phase control of the radio signal.
- FIG. 16 is a block diagram showing a general configuration of the phase shifter.
- the phase shifter includes a 180-degree distributor 65, a 0 to 90-degree phase shifter 66 (66-1 and 66-2), and a synthesizer 67.
- the 0 to 90 degree phase shifter 66 includes a 90 degree distributor 69 (69-1 and 69-2), a variable gain amplifier 70 (70-1 to 70-4), a combiner 71, and a resistor 68 ( 68-1 and 68-2).
- the 90 degree distributor 69 is composed of a four-terminal circuit.
- the isolation port of the 90-degree distributor 69 is installed via a resistor 68.
- the resistance value of the resistor 68 is preferably the same as the characteristic impedance of the transmission line, and generally 50 ⁇ is connected.
- the signal input to the phase shifter shown in FIG. 16 is distributed into four radio signals having phases of 0 degrees, 90 degrees, 180 degrees, and 270 degrees by the 180 degree distributor 65 and the two 90 degree distributors 69.
- the variable gain amplifiers 70-1 to 70-4 change the amplitude of the input signal.
- the combiner 71 combines the two signals input from the variable gain amplifier 70 and outputs the combined signal to the combiner 67.
- the synthesizer 67 synthesizes the signals input from the synthesizer 71-1 and the synthesizer 71-2.
- the rate of change in amplitude by the variable gain amplifiers 70-1 to 70-4 changes according to the desired phase angle. For example, when it is desired to set a phase close to 90 degrees with respect to the input signal, the variable gain amplifier 70 to which a signal having a phase of 90 degrees is input amplifies the signal, and the other variable gain amplifier 70 adjusts the amplitude of the input signal. Operates to decrease. By the operation as described above, the phase control amount of the phase shifter shown in FIG. 16 is set to an arbitrary angle within the range of 0 degrees to 360 degrees.
- Patent Document 1 proposes a phase shifter used when the phase is controlled every 90 degrees.
- the same number of quadrature modulators as the number of antennas are required. For this reason, depending on the phase shifter, it is difficult to perform IQ mismatch correction for each quadrature modulator. For this reason, it is easier to control the phase in the radio signal band than to control the phase in the baseband signal band with the phase shifter described in Patent Document 1.
- the phase shifter shown in FIG. 16 when the phase is controlled in the radio signal band by the phase shifter shown in FIG. 16, there are the following problems.
- the 90 degree distributor 69 is connected to the resistor 68 via the isolation port. Therefore, even when the 0-90 degree phase shifter 66 performs 0 degree or 90 degree phase shift control, that is, when the 90 degree distributor 69 only needs to supply an output signal from one output port, the influence of the resistance Receive. As a result, part of the input power is consumed unnecessarily, resulting in a loss.
- the present invention has been made to solve such problems, and its main object is to provide a phase shifter with low loss when performing phase shift control of 90 degrees step.
- phase shifter that imparts a phase in the range of 0 to 90 degrees to an input signal
- a 90-degree distributor that distributes and outputs a signal obtained by adding a phase of 90 degrees to an input signal and a signal that does not add a phase
- a first variable gain amplifier connected to the 0 degree side output port of the 90 degree distributor and outputting a signal whose amplitude is changed according to the phase shift control amount of the phase shifter
- a second variable gain amplifier connected to the 90 degree output port of the 90 degree distributor and outputting a signal whose amplitude is changed according to the phase shift control amount
- a combiner that combines the output signal of the first variable gain amplifier and the output signal of the second variable gain amplifier
- the 90 degree distributor is one in which the impedance of the isolation port is variable.
- FIG. 3 is a block diagram showing a configuration of a phase shifter according to the first exemplary embodiment.
- FIG. 4 is a diagram illustrating a relationship among phase shift control amounts, transistors, and amplitude ratios of variable gain amplifiers according to the first embodiment; 3 is a graph showing a relationship between a gain variable amplifier amplification factor ratio and a phase shift control amount according to the first exemplary embodiment;
- the phase shifter concerning Embodiment 1 it is a conceptual diagram which shows that the phase shift control amount can be changed by synthesize
- phase shifter In the phase shifter concerning Embodiment 1, it is a conceptual diagram which shows that the phase shift control amount can be changed by synthesize
- 5 is a graph showing insertion loss of a 0 to 90 degree phase shifter when the phase shift control amount is 0 degree in the phase shifter according to the first exemplary embodiment
- 6 is a graph showing insertion loss of a 0 to 90 degree phase shifter when the phase shift control amount is 90 degrees in the phase shifter according to the first exemplary embodiment
- FIG. 5 is a block diagram showing a configuration of a 0 to 90 degree phase shifter according to a second exemplary embodiment.
- FIG. 6 is a block diagram showing a configuration of a 0 to 90 degree phase shifter according to a third exemplary embodiment.
- FIG. 6 is a block diagram showing a configuration of a phase shifter according to a fourth exemplary embodiment.
- FIG. 9 is a block diagram showing a configuration of a phase shifter according to a fifth exemplary embodiment.
- FIG. 3 is a block diagram showing a configuration of a 0 to 90 degree phase shifter according to the first exemplary embodiment; It is a conceptual diagram which shows the structure of the radio
- FIG. 1 is a block diagram illustrating a configuration of a wireless communication apparatus including the phase shifter according to the first embodiment.
- the wireless communication apparatus includes a transmission baseband signal generation unit 1, a transmitter 2, transmission antennas 3-1 to 3-h (h is a natural number), a control unit 4, a local signal transmission circuit 5, a reception baseband.
- a signal processing unit 6, a receiver 7, and receiving antennas 8-1 to 8-k (k is a natural number) are provided.
- the transmission baseband signal unit 1 generates an I (In-phase) signal and a Q (Quadrature-phase) signal, which are baseband signals, from the input transmission data based on the control signal input from the control unit 4. And output to the transmitter 2.
- the transmitter 2 up-converts the input I signal and Q signal, which are two baseband signals, to the transmission frequency based on the local signal from the local signal transmission circuit 5. At the time of up-conversion, the transmitter 2 controls the phase of the transmission signal based on the control signal from the control unit 4. Thereafter, the transmitter 2 transmits a transmission signal subjected to phase control via the plurality of transmission antennas 3-1 to 3-h.
- the transmitter 2 includes a local signal amplifier 9, a quadrature modulator 10, phase shifters 11-1 to 11-h (h is a natural number), and transmission amplifiers 12-1 to 12-h.
- the local signal is input from the local signal transmission circuit 5 to the local signal amplifier 9.
- the local signal amplifier 9 amplifies the input local signal until the power becomes appropriate.
- the local signal amplifier 9 outputs the amplified signal to the quadrature modulator 10.
- the quadrature modulator 10 receives an I signal and a Q signal that are baseband signals.
- the quadrature modulator 10 receives the local signal amplified from the local signal amplifier 9.
- the quadrature modulator 10 performs frequency conversion based on the local signal so that the I signal and the Q signal become signals in the radio frequency band.
- the quadrature modulator 10 distributes and inputs the frequency-converted signal according to the number (h) of transmission antennas. Signals input to the transmission antennas 3-1 to 3-h are transmitted to the transmission target.
- the receiver 7 makes the received signal received via the receiving antennas 8-1 to 8-k (k is a natural number) equal to the frequency of the baseband signal based on the local signal input from the local signal transmission circuit 5. Down-convert. At the time of down-conversion, the receiver 7 controls the phase of the received signal based on the control signal from the control unit 4. Thereafter, the receiver 7 outputs the generated I and Q signals, which are baseband signals, to the reception baseband signal processing unit 6.
- the reception baseband signal processing unit 6 generates reception data from the I signal and Q signal, which are baseband signals, based on the control signal input from the control unit 4 and outputs the reception data.
- the reception baseband signal processing unit 6 also outputs the calculated reception data to the control unit 4.
- the control unit 4 calculates the optimum phase shift amount of the transmitter 2 and the receiver 7 based on the input reception data.
- the control unit 4 outputs the calculated optimum phase shift amount as a control signal for the transmitter 2 and the receiver 7.
- the wireless communication apparatus has been described as including the transmission antennas 3-1 to 3-h and the reception antennas 8-1 to 8-k, but is not limited thereto.
- the wireless communication apparatus may be configured to include an antenna having a common transmission antenna and reception antenna, and to switch between the transmitter 2 connected to the antenna and the receiver 7.
- the wireless communication apparatus uses the I signal and the Q signal.
- the present invention is not limited to this.
- the wireless communication device may be configured to use a signal in an arbitrary intermediate frequency band.
- FIG. 3 is a block diagram showing a configuration of the phase shifter according to the present embodiment.
- the phase shifter includes a 0-90 degree phase shifter 13 (13-1 and 13-2), a 180 degree distributor 14, and a combiner 15.
- the 0-90 degree phase shifter 13 includes a voltage variable power supply 16 (16-1, 16-2), a transistor 17 (17-1, 17-2), and a 90 degree distributor 18 (18-1, 18-2). -2), a variable gain amplifier 19, and a combiner 20.
- the isolation port of the 90-degree distributor 18 is grounded through the transistor 17.
- the 90-degree distributor 18 is configured by a four-terminal circuit such as a directional coupler and a branch line circuit, for example.
- the 180 degree distributor 14 distributes the input signal into two signals having a phase difference of 180 degrees.
- the 180 degree distributor 14 supplies the distributed signal to the 90 degree distributors 18-1 and 18-2.
- the 90-degree distributor 18-1 distributes the input signal into two signals having a phase difference of 90 degrees.
- the 90 degree distributor 18-1 supplies the distributed signal to the variable gain amplifiers 19-1 and 19-2, respectively.
- the 90-degree distributor 18-2 distributes the input signal into two signals having a phase difference of 90 degrees.
- the 90 degree distributor 18-2 supplies the distributed signal to the variable gain amplifiers 19-3 and 19-4, respectively.
- variable gain amplifiers 19-1 to 19-4 change the amplitude of the input signal.
- the rate of change in amplitude by the variable gain amplifiers 19-1 to 19-4 changes according to the desired phase angle.
- the variable gain amplifiers 19-1 and 19-2 input a signal whose amplitude is changed to the synthesizer 20-1.
- the variable gain amplifiers 19-3 and 19-4 supply a signal whose amplitude is changed to the synthesizer 20-2.
- the synthesizer 20-1 synthesizes the two input signals.
- the synthesizer 20-1 outputs the synthesized signal to the synthesizer 15.
- the synthesizer 20-2 synthesizes two input signals.
- the synthesizer 20-2 outputs the synthesized signal to the synthesizer 15.
- the synthesizer 15 synthesizes the two input signals.
- the synthesizer 15 outputs the synthesized signal as a signal having a desired phase.
- the phase shift control amount is 0 degree
- the output voltage of the voltage variable power supply 16 is set by a control signal from a control unit (not shown) so that the source-drain impedance of the transistor 17 is maximized.
- the gain of the variable gain amplifier 19-2 is set to the highest level.
- the output voltage of the voltage variable power supply 16 is set by a control signal from a control unit (not shown) so that the source-drain impedance of the transistor 17 is minimized.
- the gain of the variable gain amplifier 19-1 is set to the highest level.
- the output voltage of the voltage variable power supply 16 is set by a control signal from a control unit (not shown) so that the source-drain impedance of the transistor 17 approaches the characteristic impedance of the transmission line or the system impedance.
- the amplification factors of the variable gain amplifier 19-1 and the variable gain amplifier 19-2 are set to appropriate amplification factors according to the phase shift control amount.
- FIG. 4 is a table describing the relationship between the phase shift control amount, the impedances of the transistors 17-1 and 17-2, and the variable gain amplifiers 19-1 to 19-4.
- the phase shifter shown in FIG. 3 when the impedance between the source and drain of the transistor 17 is set to the maximum, “maximum” is described, and when the impedance is minimum, “minimum” is described.
- the case where the gain of the variable gain amplifier 19 is set to the lowest level is indicated by “OFF”, and the other cases are indicated by “ON”.
- FIG. 5 is a graph showing the relationship between the gain ratio of the variable gain amplifier 19-1 and the variable gain amplifier 19-2 and the phase shift control amount of the 0 to 90 degree phase shifter 13.
- the phase shift control amount of the 0 to 90 degree phase shifter 13 can be changed by changing the amplification factor ratio.
- FIGS. 6 and 7 show that the phase shift control amount is controlled by changing the ratio of the gains of the variable gain amplifier 19-1 and the variable gain amplifier 19-2 (the variable gain amplifier 19-1 is a numerator).
- a conceptual diagram is shown. 6 and 7 show that the phase shift control amount can be changed by synthesizing signals having different amplification factors.
- the 0-90 degree phase shifter 13 sets the source-drain impedance of the transistor 17 to the minimum or maximum when the phase shift control amount is 90 degrees (0 degree, 90 degrees).
- the phase shift control amount is 90 degrees (0 degree, 90 degrees).
- an output signal is provided only from one output port of the 90 degree distributor 70. Therefore, transmission loss can be reduced by appropriately setting the source-drain impedance of the transistor 17.
- FIG. 8 is a graph showing the calculation result of the insertion loss of the 0 to 90 degree phase shifter 13 when the phase shift control amount of the 0 to 90 degree phase shifter 13 is 0 degree.
- a solid line 21 is an insertion loss of the phase shifter according to the present embodiment.
- the dotted line 22 is the insertion loss of the phase shifter shown in FIG.
- the phase shifter according to the present embodiment has higher power than the phase shifter shown in FIG. That is, according to the phase shifter according to the present embodiment, the insertion loss can be reduced.
- FIG. 9 is a graph showing the calculation result of the insertion loss of the 0 to 90 degree phase shifter 13 when the phase shift control amount of the 0 to 90 degree phase shifter 13 is 90 degrees.
- a solid line 23 is an insertion loss of the phase shifter according to the present embodiment.
- the dotted line 24 is the insertion loss of the phase shifter shown in FIG.
- the phase shifter according to the present embodiment has higher power than the phase shifter shown in FIG. That is, according to the phase shifter according to the present embodiment, the insertion loss can be reduced.
- variable gain amplifier 19 is used in the present embodiment, the present invention is not limited to this, and any circuit that can adjust the amplitude of the input signal may be used.
- the phase shifter according to the present embodiment is characterized in that the isolation port of the 90 degree distributor in the 0 to 90 degree phase shifter is connected to any one of open, ground, and resistor.
- the phase shifter according to the present embodiment only the configuration of the 0 to 90 degree phase shifter is changed from the phase shifter according to the first embodiment (FIG. 3). Therefore, the 0 to 90 degree phase shifter according to the present embodiment will be described below.
- FIG. 10 is a block diagram showing the configuration of the 0 to 90 degree phase shifter according to the present embodiment.
- the 0-90 degree phase shifter includes a 90 degree distributor 25, a variable gain amplifier 26, a combiner 27, a switch 28, an open port 29, a resistor port 30, and a ground port 31. .
- One end of the switch 28 is connected to the isolation port of the 90-degree distributor 25.
- the other end of the switch 28 is connected to any one of the open port 29, the resistor port 30, and the ground port 31 according to the phase shift control amount. It is desirable that the resistor connected to the resistor port 30 is set to the same value as the characteristic impedance of the transmission line or the impedance of the system. Generally, 50 ⁇ is connected.
- the signal input to the 0 to 90 phase shifter is distributed to two signals having a phase difference of 90 ° by the 90 degree distributor 25 and supplied to the two variable gain amplifiers 26.
- the amplitude of the signal input to the variable gain amplifier 26 is changed.
- the variable gain amplifier 26 supplies a signal whose amplitude has been changed to the combiner 27.
- the synthesizer 27 synthesizes the two input signals.
- the synthesizer 27 outputs the synthesized signal to the outside of the 0 to 90 degree phase shifter.
- phase shift control amount of the 0-90 degree phase shifter is 0 degree, 90 degree, 0 degree-90 degree (excluding 0 degree, 90 degree), the relevant 0-90 degree.
- the operation of the phase shifter will be described.
- the isolation port of the 90 degree distributor 25 is connected to the open port 29 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the gain of the variable gain amplifier 26-2 is set to the lowest level.
- the isolation port of the 90 degree distributor 25 is connected to the ground port 31 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the gain of the variable gain amplifier 26-1 is set to the lowest level.
- the isolation port of the 90-degree distributor 25 is connected to the resistor port 30 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the amplification factors of the variable gain amplifier 26-1 and the variable gain amplifier 26-2 are appropriately set according to the phase shift control amount.
- the resistance value connected to the isolation port of the 90-degree distributor 25 can be appropriately controlled according to the phase shift control amount. As a result, transmission loss can be reduced.
- the phase shifter according to the present embodiment is characterized in that a switch is provided between the 90-degree distributor and the variable gain amplifier.
- a switch is provided between the 90-degree distributor and the variable gain amplifier.
- FIG. 11 is a block diagram showing the configuration of the 0 to 90 degree phase shifter according to the present embodiment.
- the 0-90 degree phase shifter includes a 90 degree distributor 25, a variable gain amplifier 26, a combiner 27, a switch 28, an open port 29, a resistor port 30, a ground port 31, and a switch 32. And comprising.
- the switch 32-1 is a switch for controlling connection between the 0 degree output port of the 90 degree distributor 25 and the variable gain amplifier 26-1. The switch 32-1 is open when the phase shift control amount is 90 degrees.
- the switch 32-2 is a switch that controls connection between the 90-degree output port of the 90-degree distributor 25 and the variable gain amplifier 26-2. The switch 32-2 is open when the phase shift control amount is 0 degrees.
- One end of the switch 28 is connected to the isolation port of the 90-degree distributor 25.
- the other end of the switch 28 is connected to any one of the open port 29, the resistor port 30, and the ground port 31 according to the phase shift control amount. It is desirable that the resistor connected to the resistor port 30 is set to the same value as the characteristic impedance of the transmission line or the impedance of the system. Generally, 50 ⁇ is connected.
- the signal input to the 0 to 90 phase shifter is distributed to two signals having a phase difference of 90 degrees by the 90 degree distributor 25 and supplied to the two variable gain amplifiers 26 via the switch 32.
- the amplitude of the signal input to the variable gain amplifier 26 is changed.
- the variable gain amplifier 26 supplies a signal whose amplitude has been changed to the combiner 27.
- the synthesizer 27 synthesizes the two input signals.
- the synthesizer 27 outputs the synthesized signal to the outside of the 0 to 90 degree phase shifter.
- phase shift control amount of the 0-90 degree phase shifter is 0 degree, 90 degree, 0 degree-90 degree (excluding 0 degree, 90 degree), the relevant 0-90 degree.
- the operation of the phase shifter will be described.
- the isolation port of the 90 degree distributor 25 is connected to the open port 29 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the switch 32-1 is in a connected state. That is, the path of the 90-degree distributor 25 and the variable gain amplifier 26-1 is connected.
- the switch 32-2 is in an open state. That is, the path between the 90-degree distributor 25 and the variable gain amplifier 26-2 is disconnected.
- the isolation port of the 90 degree distributor 25 is connected to the ground port 31 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the switch 32-2 is in a connected state. That is, the path of the 90-degree distributor 25 and the variable gain amplifier 26-2 is connected.
- the switch 32-1 is in an open state. That is, the path between the 90-degree distributor 25 and the variable gain amplifier 26-1 is disconnected.
- the isolation port of the 90-degree distributor 25 is connected to the resistor port 30 via the switch 28 in accordance with a control signal from a control unit (not shown).
- the switches 32-1 and 32-2 are in a connected state. That is, the path of the 90-degree distributor 25 and the variable gain amplifier 26-1 is connected. Further, the path of the 90-degree distributor 25 and the variable gain amplifier 26-2 is connected.
- the amplification factors of the variable gain amplifier 26-1 and the variable gain amplifier 26-2 are appropriately set according to the phase shift control amount.
- the resistance value connected to the isolation port of the 90-degree distributor 25 can be appropriately controlled according to the phase shift control amount. As a result, transmission loss can be reduced. Further, since the connection between the 90-degree distributor 25 and the variable gain amplifier 26 is controlled by the switch 32, the control when the desired phase shift control amount is 0 degree or 90 degrees is ensured. That is, when the phase shift control amount is 0 degree, the output port on the 90 degree side is completely blocked. When the phase shift control amount is 90 degrees, the 0 degree output port is completely blocked. Thereby, accurate phase shift control becomes possible.
- the phase shifter according to the present embodiment is characterized in that a 0 to 90 degree phase shifter and a 0/180 degree phase shifter are connected in series.
- FIG. 12 is a block diagram showing the configuration of the phase shifter according to the present embodiment.
- the phase shifter is a phase shifter that performs phase shift control from 0 degrees to 360 degrees.
- the phase shifter includes a 0 to 90 degree phase shifter 33, a 0/180 degree phase shifter 34, and a 0 to 90 degree phase shifter 35.
- the 0 to 90 degree phase shifter 33, the 0/180 degree phase shifter 34, and the 0 to 90 degree phase shifter 35 are connected in series.
- the 0 to 90 degree phase shifter 33 includes a voltage variable power source 36, a transistor 37, a 90 degree distributor 38, a variable gain amplifier 39, and a combiner 40.
- the 0 to 90 degree phase shifter 35 includes a voltage variable power supply 44, a transistor 45, a 90 degree distributor 46, a variable gain amplifier 47, and a combiner 48.
- the 0 to 90 degree phase shifter 33 performs phase shift control of 0 degree to 90 degrees
- the 0 to 90 degree phase shifter 35 performs only 0 degree or 90 degree phase shift control.
- the 0 to 90 degree phase shifter 35 performs only 0 degree or 90 degree phase shift control. Since the 0 to 90 degree phase shifter 33 and the 0 to 90 degree phase shifter 35 have the same configuration as the 0 to 90 degree phase shifter shown in the first embodiment, detailed description thereof is omitted.
- the 0/180 degree phase shifter 34 includes a 180 degree distributor 41, a variable gain amplifier 42, and a combiner 43.
- the 0/180 degree phase shifter 34 is a phase shifter that outputs a signal with a phase of 0 degree or 180 degree added to the input signal.
- a signal is input from the 0 to 90 degree phase shifter 33 to the 180 degree distributor 41 in the 0/180 degree phase shifter 34.
- the input signal is divided into two signals having a phase difference of 180 degrees by the 180-degree distributor 41 and supplied to the two variable gain amplifiers 42 (42-1 and 42-2).
- the variable gain amplifier 42 changes the amplitude of the input signal and supplies the signal with the changed amplitude to the synthesizer 43.
- the synthesizer 43 synthesizes the signals input from the two variable gain amplifiers 42 (42-1, 42-2).
- the synthesizer 43 supplies the synthesized signal to the 0 to 90 degree phase shifter 35.
- the gain of the variable gain amplifier 42-2 connected to the 180 degree port side of the 180 degree distributor 41 is set to the lowest level.
- the gain of the variable gain amplifier 42-1 connected to the 0 degree port side of the 180 degree distributor 41 is set to the lowest level.
- the resistance value connected to the isolation ports of the 90-degree distributors 38 and 46 can be appropriately controlled according to the phase shift control amount. As a result, transmission loss can be reduced.
- connection order of the 0 to 90 degree phase shifter 33, the 0/180 degree phase shifter 34, and the 0 to 90 degree phase shifter 35 is arbitrary.
- the 180-degree distributor 41 is constituted by, for example, a rat race circuit, a merchandise balun, or the like.
- the phase shifter according to this embodiment is composed of a 0/180 degree phase shifter and a 0 to 90 degree phase shifter, and is characterized by performing 90 degree step phase shift control.
- FIG. 13 is a block diagram showing the configuration of the phase shifter according to the present embodiment.
- the phase shifter according to the present embodiment includes a 0/180 degree phase shifter 49 and a 0 to 90 degree phase shifter 50.
- the 0/180 degree phase shifter 49 includes a voltage variable power supply 51, a transistor 52, a 90 degree distributor 53, a variable gain amplifier 54, a 90 degree distributor 55, a transistor 56, a voltage variable power supply 57, Is provided.
- the transistor 52 is connected to the isolation port of the 90-degree distributor 53.
- the transistor 56 is connected to the isolation port of the 90-degree distributor 55.
- the signal input to the 0/180 degree phase shifter 49 is divided into two signals having a phase difference of 90 degrees by the 90 degree distributor 53, and two gain variable amplifiers 54 (54-1, 54-2). ).
- the variable gain amplifier 54 (54-1, 54-2) adjusts the amplitude of the input signal.
- the variable gain amplifier 54 inputs a signal whose amplitude is adjusted to the 90-degree distributor 55.
- the 90-degree distributor 55 combines the two signals input from the variable gain amplifier 54 into a combined signal with a phase difference of 90 degrees. That is, the 90-degree distributor 55 outputs the signal input from the variable gain amplifier 54-1 as it is, or outputs a signal obtained by adding a phase of 90 degrees to the signal from the variable gain amplifier 54-2.
- the 0/180 degree phase shifter 49 performs phase shift control of 0 degree or 180 degrees with respect to the input signal.
- the voltage is determined by the control signal from the control unit (not shown) so that the source-drain impedance of the transistors 52 and 56 is maximized.
- the output voltage of the variable power source 57 is set.
- the gain of the variable gain amplifier 54-2 is set to the lowest level.
- phase shift control amount of the 0/180 degree phase shifter 49 is 180 degrees
- the voltage is determined by the control signal from the control unit (not shown) so that the source-drain impedance of the transistors 52 and 56 is minimized.
- the output voltage of the variable power source 57 is set.
- the gain of the variable gain amplifier 54-1 is set to the lowest level.
- the 0 to 90 degree phase shifter 50 includes a voltage variable power source 58, a transistor 59, a 90 degree distributor 60, a variable gain amplifier 61, and a combiner 62.
- the 0-90 degree phase shifter 50 performs 0 degree or 90 degree phase shift control on the input signal.
- the configuration of the 0 to 90 degree phase shifter 50 is the same as the configuration of the 0 to 90 degree phase shifter shown in the first embodiment, and thus detailed description thereof is omitted.
- the phase shift control amount of the 0/180 degree phase shifter 49 is 0 degree or 180 degrees
- the phase shift control amount of the 0 to 90 degree phase shifter 50 is 0 degree or 90 degrees. Therefore, the phase shift control amount of the phase shifter according to the present embodiment is 90 degrees steps (0 degrees, 90 degrees, 180 degrees, 270 degrees).
- the phase shifter according to the present embodiment has a simple configuration as compared with the circuit configurations of the first to fourth embodiments described above, although the phase shift control amount is limited to 90 degrees steps. As a result, the circuit scale can be reduced.
- the minimum configuration of the 0 to 90 degree phase shifter according to the first embodiment of the present invention is shown in FIG.
- the 0-90 degree phase shifter 13 includes a voltage variable power supply 16, a transistor 17, a 90 degree distributor 18, a variable gain amplifier 19 (19-1, 19-2), and a combiner 20. .
- the 90-degree distributor 18 distributes the input signal to a signal with a 90-degree phase and a signal without a phase, and outputs the signal to the variable gain amplifier 19.
- the variable gain amplifier 19 (19-1, 19-2) outputs a signal whose amplitude is changed according to the phase shift control amount to the combiner 20.
- the combiner 20 combines and outputs the signals input from the two variable gain amplifiers 19.
- the source-drain impedance of the transistor connected to the isolation port of the 90-degree distributor 18 can be changed as appropriate. That is, the resistance value connected to the isolation port can be appropriately controlled. Thereby, transmission loss can be reduced.
- a phase shifter for providing a phase in a range of 0 to 90 degrees with respect to an input signal A 90-degree distributor that distributes and outputs a signal obtained by adding a phase of 90 degrees to an input signal and a signal that does not add a phase;
- a first variable gain amplifier connected to the 0 degree side output port of the 90 degree distributor and outputting a signal whose amplitude is changed according to the phase shift control amount of the phase shifter;
- a second variable gain amplifier connected to the 90 degree output port of the 90 degree distributor and outputting a signal whose amplitude is changed according to the phase shift control amount;
- a combiner that combines the output signal of the first variable gain amplifier and the output signal of the second variable gain amplifier;
- the 90-degree distributor is a phase shifter in which the impedance of the isolation port is variable.
- the 90-degree distributor is connected to a transistor via the isolation port, and the impedance between the source and drain of the transistor can be changed according to the phase shift control amount.
- Phase shifter Phase shifter
- the source-drain impedance of the transistor is set to a maximum when the phase shift control amount is 0 degree and set to a minimum when the phase shift control amount is 90 degrees. 2.
- the phase shifter according to 2.
- the 90 degree distributor is connected to the first switch via the isolation port;
- the first switch is connected to open when the phase shift control amount is 0 degrees, and is connected to ground when the phase shift control amount is 90 degrees. Phase shifter.
- the second variable gain amplifier has an amplification factor set to a minimum when the phase shift control amount is 0 degree,
- the phase shifter according to any one of appendices 1 to 7, wherein the first variable gain amplifier has an amplification factor set to a minimum when the phase shift control amount is 90 degrees. .
- the first and second variable gain amplifiers have an amplification factor set according to the phase shift control amount when the phase shift control amount is greater than 0 degrees and smaller than 90 degrees.
- the phase shifter of any one of thru
- phase shifter 11 A phase shifter of 0 to 360 degrees that imparts a phase in the range of 0 to 360 degrees to the input signal, a signal that imparts a phase of 180 degrees to the input signal, and a signal that does not impart a phase; 180 degree distributor that distributes and outputs to Two 0 to 90 degree phase shifters that give a phase in the range of 0 to 90 degrees to which the output from the 180 degree distributor is input, A synthesizer that synthesizes the outputs of the two 0-90 degree phase shifters,
- the two 0 to 90 degree phase shifters are the phase shifters according to any one of appendix 1 to appendix 10, wherein the phase shifter is 0 to 360 degrees.
- Appendix 12 A phase shifter of 0 to 360 degrees that gives a phase in a range of 0 to 360 degrees to an input signal, A 0 degree / 180 degree phase shifter that provides a phase of 0 degree or 180 degrees to the input signal; Two 0-90 degree phase shifters connected in series with the 0 degree / 180 degree phase shifter, 11. The 0 degree to 360 degree phase shifter, wherein the two 0 to 90 degree phase shifters are the phase shifter according to any one of appendix 1 to appendix 10.
- a 90-degree step phase shifter that gives any phase of 0 degrees, 90 degrees, 180 degrees, and 270 degrees to an input signal
- the phase shifter according to any one of appendix 1 to appendix 10, and A 90 degree step phase shifter in which a 0 degree / 180 degree phase shifter that gives a phase of 0 degree or 180 degree to an input signal is connected in series.
- the 0 degree / 180 degree phase shifter is A 90-degree distributor that divides and outputs an input signal into a signal with a phase of 90 degrees and a signal without a phase; A 90-degree distributor that synthesizes two signals obtained by amplifying each of the signals output from the 90-degree distributor according to a desired amount of phase delay, 14.
- phase shifter 16 In the 0 degree / 180 degree phase shifter, The impedance between the source and the drain of the transistor is set to the maximum when the phase shift control amount of the phase shifter is 0 degree or 90 degrees, and the phase shift control amount of the phase shifter is 180 degrees or 270 degrees.
- a wireless communication apparatus comprising: the phase shifter according to any one of appendix 1 to appendix 10; and an array antenna.
- a wireless receiver comprising the phase shifter according to any one of appendices 1 to 10 and an array antenna.
- a wireless transmission device comprising: the phase shifter according to any one of supplementary notes 1 to 10; and an array antenna.
- the present invention can be used for, for example, a phase shifter used in a radio communication apparatus that handles radio signals.
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Abstract
Description
入力信号に90度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する90度分配器と、
前記90度分配器の0度側出力ポートと接続し、移相器の移相制御量に応じて振幅を変更した信号を出力する第1の利得可変増幅器と、
前記90度分配器の90度側出力ポートと接続し、前記移相制御量に応じて振幅を変更した信号を出力する第2の利得可変増幅器と、
前記第1の利得可変増幅器の出力信号と、前記第2の利得可変増幅器の出力信号と、を合成する合成器と、を備え、
前記90度分配器は、アイソレーションポートのインピーダンスが可変である、ものである。
以下、図面を参照して本発明の実施の形態について説明する。図1は、本実施の形態1にかかる移相器を備える無線通信装置の構成を示すブロック図である。無線通信装置は、送信ベースバンド信号生成ユニット1と、送信機2と、送信アンテナ3-1~3-h(hは自然数)と、制御部4と、ローカル信号発信回路5と、受信ベースバンド信号処理ユニット6と、受信機7と、受信アンテナ8-1~8-k(kは自然数)と、を備える。
本実施の形態にかかる移相器は、0~90度移相器内の90度分配器のアイソレーションポートがオープン、接地、及び抵抗のいずれかに接続することを特徴とする。本実施の形態にかかる移相器は、実施の形態1にかかる移相器(図3)から0~90度移相器の構成のみが変更されている。そのため、以下に本実施の形態にかかる0~90度移相器について説明する。
本実施の形態にかかる移相器は、90度分配器と、利得可変増幅器との間にスイッチが設けられていることを特徴とする。本実施の形態にかかる移相器は、実施の形態1、2にかかる移相器から0~90度移相器の構成のみが変更されている。そのため、以下に本実施の形態にかかる0~90度移相器について説明する。
本実施の形態にかかる移相器は、0~90度移相器と、0/180度移相器と、が直列に接続されて構成されていることを特徴とする。
本実施の形態にかかる移相器は、0/180度移相器と、0~90度移相器から構成され、90度ステップの移相制御を行うことを特徴とする。
入力信号に対して0度から90度の範囲で位相を付与する移相器であって、
入力信号に90度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する90度分配器と、
前記90度分配器の0度側出力ポートと接続し、移相器の移相制御量に応じて振幅を変更した信号を出力する第1の利得可変増幅器と、
前記90度分配器の90度側出力ポートと接続し、前記移相制御量に応じて振幅を変更した信号を出力する第2の利得可変増幅器と、
前記第1の利得可変増幅器の出力信号と、前記第2の利得可変増幅器の出力信号と、を合成する合成器と、を備え、
前記90度分配器は、アイソレーションポートのインピーダンスが可変である、移相器。
前記90度分配器は、前記アイソレーションポートを介してトランジスタと接続し、前記移相制御量に応じて前記トランジスタのソース・ドレイン間インピーダンスが変更可能であることを特徴とする付記1に記載の移相器。
前記トランジスタのソース・ドレイン間インピーダンスは、前記移相制御量が0度の場合には最大に設定され、前記移相制御量が90度の場合には最小に設定されることを特徴とする付記2に記載の移相器。
前記トランジスタのソース・ドレイン間インピーダンスは、前記移相制御量が0度より大きく90度より小さい場合、伝送線路の特性インピーダンスに設定されることを特徴とする付記3に記載の移相器。
前記90度分配器は、前記アイソレーションポートを介して第1のスイッチと接続し、
前記第1のスイッチは、前記移相制御量に応じてオープン、接地、及び抵抗のいずれかに接続することを特徴とする付記1に記載の移相器。
前記第1のスイッチは、前記移相制御量が0度の場合にはオープンと接続し、前記移相制御量が90度の場合には接地と接続することを特徴とする付記5に記載の移相器。
前記第1のスイッチは、前記移相制御量が0度より大きく90度より小さい場合、抵抗と接続することを特徴とする付記6に記載の移相器。
前記第2の利得可変増幅器は、前記移相制御量が0度である場合、増幅率が最小に設定され、
前記第1の利得可変増幅器は、前記移相制御量が90度である場合、増幅率が最小に設定されることを特徴とする付記1乃至付記7のいずれか1項に記載の移相器。
前記第1及び前記第2の利得可変増幅器は、前記移相制御量が0度より大きく90度より小さい場合、当該移相制御量に応じて増幅率が設定されることを特徴とする付記1乃至付記8のいずれか1項に記載の移相器。
前記第1の利得可変増幅器と前記90度分配器との間に配置した第2のスイッチと、
前記第2の利得可変増幅器と前記90度分配器との間に配置した第3のスイッチと、を備え、
前記第2のスイッチは、前記移相制御量が90度の場合にオープンとなり、
前記第3のスイッチは、前記移相制御量が0度の場合にオープンとなることを特徴とする付記1乃至付記9のいずれか1項に記載の移相器。
入力信号に対して0度から360度の範囲で位相を付与する0度~360度移相器であって、前記入力信号に180度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する180度分配器と、
前記180度分配器からの出力が夫々入力される0度から90度の範囲で位相を付与する移相器2つの0~90度移相器と、
前記2つの0~90度移相器の出力を合成する合成器と、を備え、
前記2つの0~90度移相器は付記1乃至付記10のいずれか1項に記載の移相器である、0度~360度移相器。
入力信号に対して0度から360度の範囲で位相を付与する0度~360度移相器であって、
入力信号に対して0度または180度の位相を付与する0度/180度移相器と、
前記0度/180度移相器と直列接続された2つの0~90度移相器と、を備え、
前記2つの0~90度移相器が付記1乃至付記10のいずれか1項に記載の移相器である、0度~360度移相器。
入力信号に対して0度、90度、180度、270度のいずれかの位相を付与する90度ステップ移相器であって、
付記1乃至付記10のいずれか1項に記載の移相器と、
入力信号に対して0度または180度の位相を付与する0度/180度移相器と、を直列に接続した90度ステップ移相器。
前記0度/180度移相器は、
入力信号を90度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する90度分配器と、
当該90度分配器から出力された信号の各々を所望の位相遅延量に応じて振幅させた2つの信号を合成する90度分配器と、を備え、
当該2つの90度分配器は、それぞれ4端子回路により構成され、アイソレーションポートのインピーダンスが可変であることを特徴とする付記13に記載の90度ステップ移相器。
前記0度/180度移相器において、
前記90度分配器は、前記アイソレーションポートを介してトランジスタと接続し、前記移相制御量に応じて前記トランジスタのソース・ドレイン間インピーダンスが変更可能であることを特徴とする付記14に記載の90度ステップ移相器。
前記0度/180度移相器において、
前記トランジスタのソース・ドレイン間インピーダンスは、移相器の移相制御量が0度または90度である場合には最大に設定され、前記移相器の移相制御量が180度または270度である場合には最小に設定されることを特徴とする付記15に記載の90度ステップ移相器。
制御信号に基づき前記移相制御量を設定できることを特徴とする付記11または付記12に記載の0度~360移相器。
付記1乃至付記10のいずれか1項に記載の移相器と、アレイアンテナと、を備えた無線通信装置。
付記1乃至付記10のいずれか1項に記載の移相器と、アレイアンテナと、を備えた無線受信装置。
付記1乃至付記10のいずれか1項に記載の移相器と、アレイアンテナと、を備えた無線送信装置。
2 送信機
3-1~3-h 送信アンテナ
4 制御部
5 ローカル信号発振回路
6 受信ベースバンド信号処理ユニット
7 受信機
8-1~8-k 受信アンテナ
9 ローカル信号増幅器
10 直交変調器
11-1~11-h 移相器
12-1~12-h 送信アンテナ
13、33、35、50 0~90度移相器
14、41 180度分配器
15、20、27、40、43、48、62 合成器
16、36、44、51、57、58 電圧可変電源
17、37、45、52、56、59 トランジスタ
18、25、38、46、53、55、60 90度分配器
19、26、39、42、47、54、61 利得可変増幅器
28、32 スイッチ
29 オープンポート
30 抵抗器ポート
31 接地ポート
34、49 0/180度移相器
63、64 無線通信装置
Claims (10)
- 入力信号に対して0度から90度の範囲で位相を付与する移相器であって、
入力信号に90度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する90度分配器と、
前記90度分配器の0度側出力ポートと接続し、移相器の移相制御量に応じて振幅を変更した信号を出力する第1の利得可変増幅器と、
前記90度分配器の90度側出力ポートと接続し、前記移相制御量に応じて振幅を変更した信号を出力する第2の利得可変増幅器と、
前記第1の利得可変増幅器の出力信号と、前記第2の利得可変増幅器の出力信号と、を合成する合成器と、を備え、
前記90度分配器は、アイソレーションポートのインピーダンスが可変である、移相器。 - 前記90度分配器は、前記アイソレーションポートを介してトランジスタと接続し、前記移相制御量に応じて前記トランジスタのソース・ドレイン間インピーダンスが変更可能であることを特徴とする請求項1に記載の移相器。
- 前記トランジスタのソース・ドレイン間インピーダンスは、前記移相制御量が0度の場合には最大に設定され、前記移相制御量が90度の場合には最小に設定されることを特徴とする請求項2に記載の移相器。
- 前記トランジスタのソース・ドレイン間インピーダンスは、前記移相制御量が0度より大きく90度より小さい場合、伝送線路の特性インピーダンスに設定されることを特徴とする請求項3に記載の移相器。
- 前記90度分配器は、前記アイソレーションポートを介して第1のスイッチと接続し、
前記第1のスイッチは、前記移相制御量に応じてオープン、接地、及び抵抗のいずれかに接続することを特徴とする請求項1に記載の移相器。 - 前記第1の利得可変増幅器と前記90度分配器との間に配置した第2のスイッチと、
前記第2の利得可変増幅器と前記90度分配器との間に配置した第3のスイッチと、を備え、
前記第2のスイッチは、前記移相制御量が90度の場合にオープンとなり、
前記第3のスイッチは、前記移相制御量が0度の場合にオープンとなることを特徴とする請求項1乃至請求項5のいずれか1項に記載の移相器。 - 入力信号に対して0度から360度の範囲で位相を付与する0度~360度移相器であって、前記入力信号に180度の位相を付与した信号と、位相を付与しない信号と、に分配して出力する180度分配器と、
前記180度分配器からの出力が夫々入力される0度から90度の範囲で位相を付与する移相器2つの0~90度移相器と、
前記2つの0~90度移相器の出力を合成する合成器と、を備え、
前記2つの0~90度移相器は請求項1乃至請求項6のいずれか1項に記載の移相器である、0度~360度移相器。 - 入力信号に対して0度から360度の範囲で位相を付与する0度~360度移相器であって、
入力信号に対して0度または180度の位相を付与する0度/180度移相器と、
前記0度/180度移相器と直列接続された2つの0~90度移相器と、を備え、
前記2つの0~90度移相器が請求項1乃至請求項6のいずれか1項に記載の移相器である、0度~360度移相器。 - 入力信号に対して0度、90度、180度、270度のいずれかの位相を付与する90度ステップ移相器であって、
請求項1乃至請求項6のいずれか1項に記載の移相器と、
入力信号に対して0度または180度の位相を付与する0度/180度移相器と、を直列に接続した90度ステップ移相器。 - 請求項1乃至請求項6のいずれか1項に記載の移相器と、アレイアンテナと、を備えた無線通信装置。
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WO2018163682A1 (ja) * | 2017-03-09 | 2018-09-13 | 日本電気株式会社 | 移相器、通信機、移相方法 |
US10797772B2 (en) | 2017-03-09 | 2020-10-06 | Nec Corporation | Phase shifter, communication device, and phase shifting method |
RU2692480C1 (ru) * | 2018-10-03 | 2019-06-25 | Закрытое акционерное общество "Научно-производственное предприятие "Магратеп" | Высокоразрядный фазовращатель свч |
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US8736336B2 (en) | 2014-05-27 |
US20130033296A1 (en) | 2013-02-07 |
JP5799951B2 (ja) | 2015-10-28 |
JPWO2011132348A1 (ja) | 2013-07-18 |
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