WO2016104521A1 - Dispositif de conversion de fréquence - Google Patents

Dispositif de conversion de fréquence Download PDF

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Publication number
WO2016104521A1
WO2016104521A1 PCT/JP2015/085863 JP2015085863W WO2016104521A1 WO 2016104521 A1 WO2016104521 A1 WO 2016104521A1 JP 2015085863 W JP2015085863 W JP 2015085863W WO 2016104521 A1 WO2016104521 A1 WO 2016104521A1
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Prior art keywords
frequency
signal
phase
mixer
frequency conversion
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PCT/JP2015/085863
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English (en)
Japanese (ja)
Inventor
寛 小坂田
祐也 松田
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三菱電機株式会社
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Publication of WO2016104521A1 publication Critical patent/WO2016104521A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
    • 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
    • H04B1/26—Circuits for superheterodyne receivers

Definitions

  • This invention relates to a frequency converter used in a tracking receiver.
  • an RF Radio Frequency: radio frequency
  • IF Intermediate Frequency: intermediate frequency
  • the phase adjuster and the tracking receiver described in Patent Document 1 are cross-correlation that performs synchronous AM detection using a sum signal and a difference signal as a method of generating an error signal necessary for antenna directivity control from a frequency modulation signal.
  • the cross-correlation method the sum signal that is band-limited by the band-pass filter is branched into two, respectively input to the two phase shifters, and the phase is adjusted to match the respective phases of the two difference signals.
  • One sum signal whose phase is adjusted to match the phase of one difference signal and the difference signal is input to one synchronous detector, and the phase is adjusted to match the phase of the other difference signal and the difference signal.
  • the other sum signal is input to the other synchronous detector.
  • variable phase shifter is provided in the RF signal line or IF signal line to adjust the phase difference between the sum signal and the difference signal, or the length of each system is changed.
  • the present invention has been made to solve the above-described problems, and an object thereof is to easily adjust the phase difference between channels without affecting the conversion gain of the entire frequency converter.
  • the frequency conversion device includes a local oscillator, a first mixer, a second mixer, a first distributor, a control circuit, and a first phase shifter.
  • the local oscillator generates a local oscillation signal based on the reference signal.
  • the first mixer frequency-converts the input first high-frequency signal based on the local oscillation signal and outputs it as a first frequency-converted signal.
  • the second mixer frequency-converts the input second high-frequency signal based on the local oscillation signal and outputs it as a second frequency-converted signal.
  • the first distributor bisects the local oscillation signal and outputs it to the first mixer and the second mixer.
  • the control circuit determines first control information corresponding to the phase difference between the first frequency conversion signal and the second frequency conversion signal.
  • the first phase shifter changes the phase of the local oscillation signal output from the first distributor to the first mixer according to the first control information.
  • the phase of the local oscillation signal output from the local oscillator is adjusted, the local oscillation signal whose phase is adjusted is input to the first and second mixers, and the first and second high-frequency signals are input. Is converted into the first and second frequency conversion signals, the phase difference between the channels can be easily adjusted without affecting the conversion gain of the entire frequency conversion device.
  • FIG. 3 is a diagram illustrating an example of a temperature table in the first embodiment.
  • 6 is a diagram illustrating an example of a frequency table according to frequency in the first embodiment.
  • FIG. It is a block diagram which shows the structural example of the frequency converter which concerns on Embodiment 2 of this invention. It is a block diagram which shows the structural example of the frequency converter which concerns on Embodiment 3 of this invention. It is a block diagram which shows the structural example of the frequency converter which concerns on Embodiment 4 of this invention. It is a block diagram which shows the structural example of the frequency converter which concerns on Embodiment 5 of this invention.
  • FIG. 1 is a block diagram showing a configuration example of a frequency conversion apparatus according to Embodiment 1 of the present invention.
  • the frequency conversion device 1 performs frequency conversion on a first high-frequency signal 21 input from a first input terminal 11 and outputs a first frequency conversion signal 61 to a first output terminal 71.
  • a second mixer 32 that converts the frequency of the second high-frequency signal 22 input from the second input terminal 12 and outputs the second frequency-converted signal 62 to the second output terminal 72
  • a local oscillator (local oscillation signal source) 4 that generates a local oscillation signal 40 based on a reference oscillation signal 90 and a first oscillation signal that is divided into two and output to the first mixer 31 and the second mixer 32
  • the phase adjustment unit 400 having the distributor 73 and the phase of the local oscillation signals 42 and 43 output from the first distributor 73 according to the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62 are determined. Determine first control information to be changed That a control circuit 8 and the temperature sensor 15 for measuring the temperature of the frequency converter 1,.
  • the phase adjustment unit 400 changes the phase of the local oscillation signal 42 that is one output signal of the first distributor 73 according to the first control information, and outputs the first oscillation signal 42 to the first mixer 31.
  • the phase of the local oscillation signal 43 that is the other output signal of the first distributor 73 is changed and output to the second mixer 32.
  • At least one of the phase shifters 52 is included.
  • the phase adjustment unit 400 includes a first phase shifter 51 and a second phase shifter 52. Changing the phase of the signal is called phase shift.
  • the magnitude of the phase to be changed is called a phase shift amount.
  • a first tracking signal which is the first high-frequency signal 21 input from the first input terminal 11, is input to an RF (Radio Frequency: radio frequency) terminal of the first mixer 31.
  • the second tracking signal which is the second high-frequency signal 22 input from the second input terminal 12, is input to the RF terminal of the second mixer 32.
  • the reference oscillation signal 90 input from the high stability reference oscillator such as an external rubidium oscillator or OCXO (Oven Controlled Xtal Oscillator) through the input terminal 9 is input to the local oscillator 4. Is done.
  • the local oscillation signal 40 generated by the local oscillator 4 that is phase-synchronized with the reference oscillation signal 90 is input to the first distributor 73.
  • the frequency of the local oscillation signal 40 generated by the local oscillator 4 is adjusted by a control signal 84 from the control circuit 8.
  • the local oscillation signal 40 is divided into two by a first distributor 73 into a local oscillation signal 42 for the first phase shifter 51 and a local oscillation signal 43 for the second phase shifter 52, respectively. 51 and the second phase shifter 52.
  • the local oscillation signal 42 is phase-shifted by the first phase shifter 51, becomes the local oscillation signal 44 for the first mixer 31, and is input to the LO (Local Oscillator) terminal of the first mixer 31.
  • the amount of phase shift in the first phase shifter 51 is adjusted by a control signal 81 from the control circuit 8.
  • the local oscillation signal 43 is phase-shifted by the second phase shifter 52, becomes a local oscillation signal 45 for the second mixer 32, and is input to the LO terminal of the second mixer 32.
  • the amount of phase shift in the second phase shifter 52 is adjusted by a control signal 82 from the control circuit 8.
  • the local oscillation signal 44 and the local oscillation signal 45 have the same frequency.
  • the first high-frequency signal 21 is converted by the first mixer 31 into a first frequency conversion signal 61 having a frequency component that is the difference between the frequency of the first high-frequency signal 21 and the frequency of the local oscillation signal 44. 1 is output from the IF (Intermediate Frequency) terminal of the first mixer 31 to the first output terminal 71.
  • the second high frequency signal 22 is converted by the second mixer 32 into a second frequency conversion signal 62 having a frequency component that is the difference between the frequency of the second high frequency signal 22 and the frequency of the local oscillation signal 45. And output from the IF terminal of the second mixer 32 to the second output terminal 72.
  • the frequency conversion device 1 includes the signal path in which the first tracking signal that is the first high-frequency signal 21 is converted into the first frequency conversion signal 61 and the second high-frequency signal 22.
  • a certain second tracking signal has two signal paths (channels) of a signal path that is converted into a second frequency conversion signal 62 and output.
  • a circuit including an amplifier and a transmission line from the first input terminal 11 to the input terminal (RF terminal) of the first mixer 31, and an input terminal (RF terminal) of the second mixer 32 from the second input terminal 12 The circuit including the amplifier and the transmission line leading to) is configured using the same circuit. Therefore, the group delay characteristic in the circuit from the first input terminal 11 to the input terminal of the first mixer 31 and the input terminal of the second mixer 32 from the second input terminal 12 within the determined band. The group delay characteristics in the circuits leading to are the same.
  • the above defined band is a frequency band assigned to the first high-frequency signal 21 and the second high-frequency signal 22.
  • the first mixer 31 and the second mixer 32 are within the above defined band.
  • the group delay characteristics at the time of frequency conversion in the mixer 32 can be made the same.
  • the circuit including the amplifier and the transmission line up to 72 is configured using exactly the same circuit. Therefore, the first mixing is performed within the frequency bands of the first frequency conversion signal 61 frequency-converted by the first mixer 31 and the second frequency conversion signal 62 frequency-converted by the second mixer 32, respectively.
  • the group delay characteristic in the circuit from the output terminal of the mixer 31 to the first output terminal 71 and the group delay characteristic of the circuit from the output terminal of the second mixer 32 to the second output terminal 72 are the same.
  • the first distributor 73 divides the local oscillation signal 40 until the local oscillation signal 40 is divided and output as the local oscillation signal 42 until the local oscillation signal 40 is divided into two and output as the local oscillation signal 43.
  • the group delay characteristics at the time of distribution are configured to be exactly the same.
  • the first phase shifter 51 and the second phase shifter 52 have a group delay characteristic at the time of phase shift in the first phase shifter 51 and a group delay characteristic at the time of phase shift in the second phase shifter 52. It is configured using exactly the same circuit so as to be exactly the same.
  • the control circuit 8 determines first control information used for adjusting the phases of the local oscillation signals 42 and 43 in accordance with the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62, In response to the control information, a control signal 81 is sent to the first phase shifter 51 and a control signal 82 is sent to the second phase shifter 52. In the first embodiment, the control circuit 8 determines between the phase difference between the first high-frequency signal 21 and the second high-frequency signal 22 and the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62. The first control information is determined so that the phase difference between channels, which is the difference between the first and second channels, is less than or equal to a predetermined first threshold.
  • the control circuit 8 By setting the first threshold value to a sufficiently small value, the phase difference between channels can be eliminated.
  • the control circuit 8 eliminates the phase difference between the first output terminal 71 and the second output terminal 72. First control information is determined.
  • the first control information includes at least one of a control signal for controlling the amount of phase shift in the first phase shifter 51 and a control signal for controlling the amount of phase shift in the second phase shifter 52.
  • phase adjustment is performed by at least one of the first phase shifter 51 and the second phase shifter 52 in the phase adjustment unit 400.
  • the control signal for controlling the first phase shifter 51 and the second phase shifter 52 is the amount of phase shift itself depending on the type of the first phase shifter 51 and the second phase shifter 52. Or a control voltage corresponding to the amount of phase shift.
  • control circuit 8 generates a local oscillation signal 40 generated by the local oscillator 4 using the control signal 84 based on the frequencies of the first high frequency signal 21 and the second high frequency signal 22 indicated by the control signal 83.
  • Set the frequency In this setting, the frequency of the first frequency conversion signal 61 and the second frequency conversion signal 62 is set to a constant frequency by adjusting the frequency of the local oscillator 4.
  • the control circuit 8 sets the frequency of the local oscillator 4 to a constant value.
  • the control circuit 8 causes the local frequency in accordance with the frequencies of the first high-frequency signal 21 and the second high-frequency signal 22.
  • the frequency of the oscillation signal 40 is adjusted.
  • phase shifters capable of changing from ⁇ 90 ° to + 90 ° are selected. Before the phase shift amount is adjusted, the phase shift amounts in the first phase shifter 51 and the second phase shifter 52 are set to 0 °.
  • the first high-frequency signal 21 input from the first input terminal 11 is expressed by the following equation (1), the amplitude is As, and the angular frequency is ⁇ 1.
  • the second high-frequency signal 22 input from the second input terminal 12 is expressed by the following equation (2), the amplitude is Ae, and the angular frequency is ⁇ 1.
  • the phase change that occurs from the first input terminal 11 to the first mixer 31 is ⁇ s1, the phase change that occurs in the first mixer 31 is ⁇ s2, and the phase change from the first mixer 31 to the first mixer 31 is The phase change that occurs up to the output terminal 71 of 1 is ⁇ s3.
  • the phase change that occurs from the second input terminal 12 to the second mixer 32 is ⁇ e1, the phase change that occurs in the second mixer 32 is ⁇ e2, and the second mixer
  • the change in phase that occurs from 32 to the second output terminal 72 is ⁇ e3.
  • the phase change occurring in the local oscillator 4 is ⁇ o.
  • the phase shift amount in the first phase shifter 51 is ⁇ s
  • the phase shift amount in the second phase shifter 52 is ⁇ e.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the following equation (3), and the amplitude is As1.
  • the following equation (3) is expressed by the following equation (4).
  • the second frequency conversion signal 62 at the second output terminal 72 is expressed by the following equation (5), and the amplitude is Ae1.
  • the amplitude As 1 of the frequency conversion signal 61 is determined by the amplitude As of the first high-frequency signal 21. Even if the amplitude of the local oscillation signal 44 changes, it is not affected.
  • the amplitude Ae1 of the frequency conversion signal 62 is determined by the amplitude Ae of the second high-frequency signal 22, and is locally Even if the amplitude of the oscillation signal 45 changes, it is not affected.
  • the relationship between the amplitude As of the first high-frequency signal 21 and the amplitude As1 of the frequency conversion signal 61 is the same as the relationship between the amplitude Ae of the second high-frequency signal 22 and the amplitude Ae1 of the frequency conversion signal 62.
  • the first shift is performed so that the phase ( ⁇ ts + ⁇ s) of the first frequency conversion signal 61 at the first output terminal 71 is the same as the phase ( ⁇ te + ⁇ e) of the second frequency conversion signal 62 at the second output terminal 72.
  • the phase shift amount ⁇ s in the first phase shifter 51 and the phase shift amount ⁇ e in the second phase shifter 52 also need to be set according to the temperature of the frequency converter 1.
  • the first phase shifter 51 and the second phase shifter 52 are controlled by voltage
  • the first phase shifter 51 is controlled so as to change the phase of the local oscillation signal 42 by the phase shift amount ⁇ s.
  • the control voltage input as the signal 81 and the control voltage input as the control signal 82 in order for the second phase shifter 52 to change the phase of the local oscillation signal 43 by the phase shift amount ⁇ e also change depending on the temperature. Therefore, the control circuit 8 sets the first control information according to the temperature of the frequency conversion device 1.
  • FIG. 2 is a diagram illustrating an example of a temperature table in the first embodiment.
  • the control circuit 8 obtains the phase shift amount ⁇ s in the first phase shifter 51 and the phase shift amount ⁇ e in the second phase shifter 52 for a plurality of temperatures from T1 to TN.
  • Control voltage values Vs and Ve (unit: V) to be supplied to the first phase shifter 51 and the second phase shifter 52 are determined.
  • the temperature table in FIG. 2 is obtained by, for example, measuring the control voltage value at which the phases of the first frequency conversion signal 61 and the second frequency conversion signal 62 are equal by putting the frequency conversion device 1 in a thermostat.
  • Vs and Ve are obtained and created.
  • the phases of the first frequency conversion signal 61 and the second frequency conversion signal 62 are changed by making the phase of the signal 22 equal and changing the control power applied to the first phase shifter 51 and the second phase shifter 52.
  • the control voltage values Vs and Ve to be equal are obtained.
  • the control voltage values Vs and Ve are the first control information for a plurality of temperatures from T1 to TN.
  • control circuit 8 calculates the control voltage value using the temperature table shown in FIG. 2
  • a temperature sensor 15 is provided in the frequency converter 1, and control voltage values Vs and Ve at a plurality of temperatures from T1 to TN are set for each of the first phase shifter 51 and the second phase shifter 52.
  • a table is prepared.
  • the control circuit 8 performs an interpolation process on the control voltages corresponding to a plurality of temperatures T1 to TN stored in the temperature table, and is a control voltage that is first control information corresponding to the temperature detected by the temperature sensor 15. Values Vs and Ve are calculated.
  • the control circuit 8 sends a control signal 81 corresponding to the calculated control voltage value to the first phase shifter 51. The same process is performed for the second phase shifter 52.
  • the phase difference between channels in the frequency converter 1 can be accurately detected even with respect to a change in temperature. Can be eliminated.
  • a plurality of temperature sensors 15 may be provided in the frequency conversion device 1, and in this case, the control circuit 8 acquires a temperature table corresponding to the average temperature detected by the plurality of temperature sensors 15.
  • the control circuit 8 sets the first control information according to the frequencies of the first high-frequency signal 21 and the second high-frequency signal 22 and the temperature of the frequency conversion device 1.
  • FIG. 3 is a diagram illustrating an example of a temperature table for each frequency according to the first embodiment. 2 is the same as FIG. 2, and in the example of FIG. 3, the temperature table shown in FIG. 2 is prepared for each of the frequencies F1 to FN of the first high-frequency signal 21 and the second high-frequency signal 22. ing.
  • the case where the control circuit 8 calculates the control voltage value as the first control information using the frequency-specific temperature table shown in FIG. 3 will be described.
  • a table as shown in FIG. 3 is prepared for each of the first phase shifter 51 and the second phase shifter 52 at frequencies F1 to FN obtained by dividing the bandwidth of the high-frequency signal. .
  • the control circuit 8 is stored in the frequency-specific temperature table based on the frequency of the first high-frequency signal 21 and the second high-frequency signal 22 indicated by the control signal 83 from the outside and the temperature detected by the temperature sensor 15.
  • the control voltage values Vs and Ve which are the first control information, are calculated by performing interpolation processing on the corresponding control voltage with respect to frequency and temperature.
  • the control circuit 8 sends a control signal 81 corresponding to the calculated control voltage value to the first phase shifter 51. The same process is performed for the second phase shifter 52.
  • the frequency and temperature of the first high-frequency signal 21 and the second high-frequency signal 22 are controlled.
  • the phase difference between channels in the frequency converter 1 can be eliminated with high accuracy.
  • the frequency converter 1 does not have to include the temperature sensor-15.
  • the control circuit 8 sends a control signal 81 corresponding to a control voltage value that is a value independent of temperature to the first phase shifter 51 and the second phase shifter 52.
  • the local oscillation signal 42 is obtained by the first phase shifter 51 and the second phase shifter 52 included in the phase adjustment unit 400. , 43 can be adjusted easily without affecting the conversion gain of the entire frequency conversion device 1.
  • FIG. FIG. 4 is a block diagram illustrating a configuration example of the frequency conversion device according to the second embodiment of the present invention.
  • the frequency conversion device 1 according to the second embodiment includes a common phase shifter 50 in addition to the configuration of the frequency conversion device 1 shown in FIG.
  • the common phase shifter 50 is provided to adjust the deviation of the group delay characteristics between the devices when diversity reception is performed using the plurality of frequency conversion devices 1.
  • the local oscillation signal 40 output from the local oscillator 4 is input to the common phase shifter 50.
  • the local oscillation signal 40 is phase-shifted by the common phase shifter 50, becomes a local oscillation signal 41, and is input to the first distributor 73.
  • the phase shift amount of the common phase shifter 50 is adjusted by a control signal 80 from the control circuit 8.
  • a circuit including an amplifier and a transmission line from the input terminal 9 to the local oscillator 4 and a circuit including an amplifier and a transmission line from the output terminal of the local oscillator 4 through the common phase shifter 50 to the first distributor 73 are:
  • Each frequency conversion device 1 is configured using exactly the same circuit so that the group delay characteristics in each frequency conversion device 1 are the same.
  • the first distributor 73 is configured in the same manner as in the first embodiment, and is further configured using exactly the same circuit for each frequency converter 1 so that the group delay characteristics in each frequency converter 1 are the same.
  • the control circuit 8 uses the first control used to adjust the phase of the local oscillation signals 42 and 43 according to the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62. Information is determined, and a control signal 81 is sent to the first phase shifter 51 and a control signal 82 is sent to the second phase shifter 52 in accordance with the first control information. Further, the control circuit 8 includes the phase difference between the first frequency conversion signal 61 and the first frequency conversion signal 61 of the other frequency conversion device 1, and the second frequency conversion signal 62 and the first frequency conversion signal 1 of the other frequency conversion device 1.
  • the second phase shift amount used for adjusting the phase of the local oscillation signal 40 in the common phase shifter 50 is determined according to at least one of the phase differences of the two frequency conversion signals 62, and the second phase shift amount is set as the second phase shift amount.
  • a control signal 80 is sent to the common phase shifter 50.
  • the common phase shifter 50 changes the phase of the local oscillation signal 40 according to the control signal 80.
  • the control circuit 8 controls the first frequency of the frequency converter 1.
  • the second phase shift amount is determined so that the phase difference between the converted signal 61 and the first frequency converted signal 61 of the other frequency converting device 1 is eliminated, and the common phase shifter 50 included in the frequency converting device 1 to be adjusted. Changes the phase of the local oscillation signal 40 in accordance with the second phase shift amount.
  • the phase shifter that can change from -180 ° to + 180 ° is selected as the common phase shifter 50.
  • the phase shift amount in the common phase shifter 50 of the reference frequency conversion device 1 and the common phase shifter 50 of the other frequency conversion device 1 is set to 0 °.
  • the number of other frequency converters 1 is arbitrary.
  • the amount of phase shift in the common phase shifter 50 is ⁇ c, and the first frequency conversion signal 61 in the first output terminal 71 is expressed by the following equation (7), and the second frequency in the second output terminal 72.
  • the conversion signal 62 is expressed by the following equation (8).
  • phase of the first frequency conversion signal 61 of another frequency conversion device 1 that is the adjustment target is delayed by ⁇ with respect to the phase of the first frequency conversion signal 61 of the reference frequency conversion device 1, adjustment is performed.
  • phase shift amount ⁇ c in the common phase shifter 50 of another target frequency conversion device 1 is set to + ⁇ , the phase difference of the first frequency conversion signal 61 between the frequency conversion devices 1 is eliminated.
  • phase of the first frequency conversion signal 61 of another frequency conversion device 1 that is the adjustment target is advanced by ⁇ with respect to the phase of the first frequency conversion signal 61 of the reference frequency conversion device 1, the adjustment target The phase difference of the first frequency conversion signal 61 between the frequency conversion devices 1 is eliminated by setting the phase shift amount ⁇ c in the first common phase shifter 50 of the other frequency conversion device 1 to ⁇ .
  • phase shift amount ⁇ c by preparing the temperature table shown in FIG. 2 or the temperature-specific temperature table shown in FIG. 3, the phase difference between channels in the frequency converter 1 and the frequency converter with high accuracy with respect to temperature and frequency The phase difference between 1 can be eliminated.
  • the common phase shifter 50, the first phase shifter 51, and the second phase shifter 52 included in the phase adjustment unit 400 By adjusting the phase of the local oscillation signals 40, 42, and 43, the phase difference between channels can be easily adjusted without affecting the conversion gain of the entire frequency conversion device 1, and between the frequency conversion devices 1. It is possible to easily adjust the phase difference.
  • FIG. 5 is a block diagram illustrating a configuration example of the frequency conversion device according to the third embodiment of the present invention.
  • the input high-frequency signal is subjected to frequency conversion, and the first mixer 31 and the second mixing are performed as a signal of the determined intermediate frequency fmid.
  • Input to the device 32 Specifically, as shown in FIG. 5, the first high-frequency signal 21 is converted to the third high-frequency signal 21a having the intermediate frequency fmid by the third mixer 31a, and the second high-frequency signal 22 is converted to the fourth mixer. 32a is converted into a fourth high-frequency signal 22a having an intermediate frequency fmid.
  • the first mixer 31 and the second mixer 32 respectively perform frequency conversion and phase adjustment on the third high-frequency signal 21a and the fourth high-frequency signal 22a having the intermediate frequency fmid, as in the second embodiment. I do.
  • the frequency conversion device 1 converts the frequency of the first high-frequency signal 21 input from the first input terminal 11 to generate a third high-frequency signal.
  • the third mixer 31a that outputs 21a to the first mixer 31, the second high-frequency signal 22 input from the second input terminal 12 is frequency-converted, and the fourth high-frequency signal 22a is second-mixed.
  • the fourth mixer 32a to be output to the unit 32, the second local oscillator 4a that generates the local oscillation signal 40a (second local oscillation signal) based on the reference oscillation signal 90, and the local oscillation signal 40a are divided into two.
  • a second distributor 73a that outputs to the third mixer 31a and the fourth mixer 32a.
  • the first tracking signal which is the first high-frequency signal 21 input from the first input terminal 11
  • the second tracking signal that is the second high-frequency signal 22 input from the second input terminal 12 is input to the fourth mixer 32a.
  • the reference oscillation signal 90 input from the input terminal 9 is input to the local oscillator 4 and the second local oscillator 4a.
  • the local oscillation signal 40a generated by the second local oscillator 4a that is phase-synchronized with the reference oscillation signal 90 is input to the second distributor 73a.
  • the local oscillation signal 40a is divided by the second distributor 73a into a local oscillation signal 44a for the third mixer 31a and a local oscillation signal 45a for the fourth mixer 32a. Input to the fourth mixer 32a.
  • the frequency of the local oscillation signal 40 a generated by the local oscillator 4 a is adjusted by a control signal 84 a from the control circuit 8.
  • the first high-frequency signal 21 is converted by the third mixer 31a into a third high-frequency signal 21a having a frequency component that is the difference between the frequency of the first high-frequency signal 21 and the frequency of the local oscillation signal 44a.
  • the second high frequency signal 22 is converted by the fourth mixer 32a into a fourth high frequency signal 22a having a frequency component that is the difference between the frequency of the second high frequency signal 22 and the frequency of the local oscillation signal 45a. , And output to the second mixer 32.
  • the second local oscillator 4a sets the frequency of the local oscillation signal 40a so that the frequency of the third high-frequency signal 21a and the frequency of the fourth high-frequency signal 22a are within a predetermined band.
  • the frequency of the local oscillation signal 40a is set in this way, even when the frequency of the first high-frequency signal 21 and the frequency of the second high-frequency signal 22 are outside the predetermined band, the operation of the frequency converter 1 is performed. Is possible.
  • the operation of the frequency conversion device 1 is possible even when the input high frequency signal covers a wide band.
  • FIG. 6 is a block diagram showing a configuration example of a frequency conversion apparatus according to Embodiment 4 of the present invention.
  • the frequency conversion device 1 according to the fourth embodiment has a configuration obtained by removing the second phase shifter 52 from the configuration of the frequency conversion device 1 according to the second embodiment.
  • the phase adjustment is performed in the first phase shifter 51 and the second phase shifter 52 in accordance with the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62.
  • the phase is adjusted only by the first phase shifter 51.
  • the control circuit 8 determines first control information used for adjusting the phase of the local oscillation signal 42 in accordance with the phase difference between the first frequency conversion signal 61 and the second frequency conversion signal 62, and the first control information In response to this, a control signal 81 is sent to the first phase shifter 51.
  • the control circuit 8 uses the first frequency conversion signal 61 and the second output terminal at the first output terminal 71.
  • the first phase shift amount is determined so that the phase difference of the second frequency conversion signal 62 at 72 disappears.
  • the first phase shifter 51 in the phase adjustment unit 400 adjusts the phase. Before the phase shift amount is adjusted, the phase shift amount in the first phase shifter 51 is set to 0 °.
  • the first shift is performed such that the phase ( ⁇ ts + ⁇ s) of the first frequency conversion signal 61 at the first output terminal 71 and the phase ( ⁇ te) of the second frequency conversion signal 62 at the second output terminal 72 are the same.
  • the phase ⁇ s of the first phase shifter 51 is set to + ⁇ .
  • phase of the first frequency conversion signal 61 at the first output terminal 71 is 180 ° behind the phase of the second frequency conversion signal 62 at the second output terminal 72, that is, ( ⁇ te) ⁇
  • phase difference of the phase of the second frequency conversion signal 62 at the second output terminal 72 is eliminated.
  • the first phase shifter 51 can be varied from ⁇ 90 ° to + 90 °, but in the fourth embodiment, the first phase shifter 51 is variable.
  • the phase shifter 51 needs to be able to change from ⁇ 180 ° to + 180 °.
  • the case where the second phase shifter 52 is removed from the configuration of the frequency conversion device 1 according to the second embodiment has been described.
  • the first configuration from the configuration of the frequency conversion device 1 according to the second embodiment is described.
  • the phase shifter 51 is removed.
  • the configuration of the frequency conversion device 1 according to the fourth embodiment the number of phase shifters can be reduced and the frequency conversion device 1 can be simplified.
  • FIG. 6 in the case of a configuration in which only one local oscillation signal is phase-adjusted by a phase shifter, the mixer that performs phase shift adjustment is the first mixer, and the phase shift-adjusted mixer
  • the input to is called a first high-frequency signal, and the output is called a first frequency conversion signal.
  • the mixer that does not perform phase shift adjustment is called a second mixer, the input to the mixer that does not perform phase shift adjustment is called a second high-frequency signal, and the output is called a second frequency conversion signal. Even if it calls like this, it has generality.
  • FIG. 7 is a block diagram showing a configuration example of a frequency conversion apparatus according to Embodiment 5 of the present invention.
  • the configuration of the frequency conversion device 1 according to the fifth embodiment is a configuration obtained by removing the common phase shifter 50 from the configuration of the frequency conversion device 1 according to the fourth embodiment.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the above equations (3) and (4).
  • the second frequency conversion signal 62 at the second output terminal 72 is expressed by the following equation (11).
  • the number of phase shifters can be reduced and the frequency converter 1 can be simplified by using the configuration of the frequency converter 1 according to the fifth embodiment.
  • the only difference from the fourth embodiment is that the common phase shifter 50 is not provided, and the operation is the same as that of the fourth embodiment.
  • FIG. 8 is a block diagram showing a configuration example of a frequency conversion apparatus according to Embodiment 6 of the present invention.
  • the configuration of the frequency conversion device 1 according to the sixth embodiment is a configuration in which a multiplier 53 is inserted between the common phase shifter 50 and the first distributor 73 in the frequency conversion device 1 according to the second embodiment. It is.
  • the multiplication number of the multiplier 53 is N times.
  • the local oscillation signal 41 output from the common phase shifter 50 is input to the multiplier 53.
  • the frequency of the local oscillation signal 41 is multiplied by a multiplier 53 to become a local oscillation signal 46 and input to the first distributor 73.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the following expression (12), and the second frequency conversion signal 62 at the second output terminal 72 is expressed by the following expression (13). .
  • the following equation (12) is expressed by the above equation (4).
  • ⁇ e1 + ⁇ e2 + ⁇ e3 + N ⁇ c + N ⁇ o ⁇ te
  • the following equation (13) is expressed by the above equation (6).
  • the angular frequency of the multiplied local oscillation signal 46 is ⁇ 3.
  • the difference from the second embodiment is only that the multiplier 53 is inserted, and the operation is the same as that of the second embodiment.
  • the multiplier 53 having a multiplication factor of N times, the phase variable range of the common phase shifter 50 can be narrowed to -180 ° / N to + 180 ° / N, and the load on the phase shifter is reduced. It can be reduced.
  • FIG. 9 is a block diagram showing a configuration example of a frequency conversion apparatus according to Embodiment 7 of the present invention.
  • the configuration of the frequency conversion device 1 according to the seventh embodiment is the same as the configuration of the frequency conversion device 1 according to the second embodiment except that a multiplier 54 is inserted between the first phase shifter 51 and the first mixer 31.
  • the multiplier 55 is inserted between the second phase shifter 52 and the second mixer 32.
  • the multiplication numbers of the multiplier 54 and the multiplier 55 are N times and are the same.
  • the local oscillation signal 44 is frequency-multiplied by a multiplier 54 to become a local oscillation signal 47 that is input to the first mixer 31.
  • the frequency of the local oscillation signal 45 is multiplied by a multiplier 55 to become a local oscillation signal 48 and input to the second mixer 32.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the following equation (14).
  • the following equation (14) is expressed by the following equation (15).
  • the difference from the second embodiment is only that the multipliers 54 and 55 are inserted, and the operation is the same as that of the second embodiment.
  • the variable range of the first phase shifter 51 and the second phase shifter 52 is set to ⁇ 90 ° / N to + 90 ° / N, and
  • the variable range of the common phase shifter 50 can be narrowed to ⁇ 180 ° / N to + 180 ° / N, and the burden on the phase shifter can be reduced.
  • FIG. 10 is a block diagram showing a configuration example of the frequency conversion device according to the eighth embodiment of the present invention.
  • the configuration of the frequency conversion device 1 according to the eighth embodiment is such that a frequency multiplier 54 is inserted between the first phase shifter 51 and the first mixer 31 in the frequency conversion device 1 according to the fourth embodiment.
  • a multiplier 55 is inserted between the first distributor 73 and the second mixer 32.
  • the multiplication numbers of the multiplier 54 and the multiplier 55 are N times and are the same.
  • the local oscillation signal 44 is frequency-multiplied by a multiplier 54 to become a local oscillation signal 47 that is input to the first mixer 31.
  • the local oscillation signal 43 is frequency-multiplied by a multiplier 55 to become a local oscillation signal 48 and input to the second mixer 32.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the above equations (14) and (15).
  • the second frequency conversion signal 62 at the second output terminal 72 is expressed by the following equation (18).
  • the difference from the fourth embodiment is only that the multipliers 54 and 55 are inserted, and the operation is the same as that of the fourth embodiment. Similar to the fourth embodiment, the operation is the same when the first phase shifter 51 is not provided and the second phase shifter 52 is provided.
  • the variable range of the common phase shifter 50 is changed to ⁇ 180 ° / N to + 180 ° / N, and the variable range of the first phase shifter 51 is changed.
  • the variable range of the common phase shifter 50 can be narrowed to -180 ° / N to + 180 ° / N to -180 ° / N to + 180 ° / N, thereby reducing the burden on the phase shifter. Is possible.
  • FIG. 11 is a block diagram showing a configuration example of the frequency conversion device according to the ninth embodiment of the present invention.
  • the configuration of the frequency conversion device 1 according to the ninth embodiment is the same as that of the frequency conversion device 1 according to the fifth embodiment, in which a multiplier 54 is inserted between the first phase shifter 51 and the first mixer 31.
  • the multiplier 55 is inserted between the first distributor 73 and the second mixer 32.
  • the multiplication numbers of the multiplier 54 and the multiplier 55 are N times and are the same.
  • the local oscillation signal 44 is frequency-multiplied by a multiplier 54 to become a local oscillation signal 47 that is input to the first mixer 31.
  • the local oscillation signal 43 is frequency-multiplied by a multiplier 55 to become a local oscillation signal 48 and input to the second mixer 32.
  • the first frequency conversion signal 61 at the first output terminal 71 is expressed by the following equation (19).
  • the second frequency conversion signal 62 at the second output terminal 72 is expressed by the following equation (20).
  • the multipliers 54 and 55 are inserted, and the operation is the same as that of the fifth embodiment. Similar to the fifth embodiment, the operation is the same when the first phase shifter 51 is not provided and the second phase shifter 52 is provided.
  • the multipliers 54 and 55 whose multiplication numbers are N times, the variable range of the first phase shifter 51 can be changed from ⁇ 180 ° / N to + 180 ° / N, and the common phase shifter 50 can be changed.
  • the range can be narrowed to -180 ° / N to + 180 ° / N, and the burden on the phase shifter can be reduced.
  • 1 frequency converter 4 local oscillator (local oscillation signal source), 4a second local oscillator, 8 control circuit, 9 input terminal, 11 first input terminal, 12 second input terminal, 15 temperature sensor, 21st 1 high frequency signal (first tracking signal), 21a third high frequency signal, 22 second high frequency signal (second tracking signal), 22a fourth high frequency signal, 31 first mixer, 31a third , 32 second mixer, 32a fourth mixer, 40, 40a, 41, 42, 43, 44, 44a, 45, 45a, 46, 47, 48 local oscillation signal, 50 common phase shifter , 51 1st phase shifter, 52 2nd phase shifter, 53, 54, 55 multiplier, 61 1st frequency conversion signal, 62 2nd frequency conversion signal, 71 1st output terminal, 72 2nd 2 output terminals 73 first divider, 73a second distributor, 80,81,82,83,84,84A, 85 control signal, 90 a reference oscillation signal, 400 a phase adjusting unit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

L'invention concerne un premier mélangeur (31) qui convertit en fréquence un premier signal à haute fréquence (21) sur la base d'un signal généré localement (42), et délivre un premier signal converti en fréquence (61). Un second mélangeur (32) convertit en fréquence un second signal à haute fréquence (22) sur la base d'un signal généré localement (43), et délivre un second signal converti en fréquence (62). En fonction de la différence de phase du premier signal converti en fréquence (61) et du second signal converti en fréquence (62), un circuit de commande (8) détermine des premières informations de commande à utiliser pour régler la phase des signaux générés localement (42, 43). En fonction des premières informations de commande, un premier déphaseur (51) change la phase du signal généré localement (42) délivré au premier mélangeur (31) à partir d'un premier distributeur (73).
PCT/JP2015/085863 2014-12-25 2015-12-22 Dispositif de conversion de fréquence WO2016104521A1 (fr)

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JP2019212947A (ja) * 2018-05-31 2019-12-12 三菱電機株式会社 アンテナ装置

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JPH0850171A (ja) * 1994-08-05 1996-02-20 Nec Corp 位相調整器及び追尾受信機
JPH08248120A (ja) * 1995-03-15 1996-09-27 Mitsubishi Electric Corp レーダ受信機
JPH0968570A (ja) * 1995-08-31 1997-03-11 Mitsubishi Electric Corp レーダ受信機
JP2005020288A (ja) * 2003-06-25 2005-01-20 Fujitsu Ten Ltd 高周波数帯域ローカルリークのキャンセル回路、レーダ装置およびデジタル無線通信装置
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JPS5093394A (fr) * 1973-12-17 1975-07-25
JPS58113875A (ja) * 1981-12-22 1983-07-06 ヒユーズ・エアクラフト・カンパニー レ−ダ受信機
JPS5951373A (ja) * 1982-09-17 1984-03-24 Mitsubishi Electric Corp モノパルスレ−ダ受信機
JPS6217675A (ja) * 1985-07-16 1987-01-26 Ikuo Arai 移動位置測定装置
JPH04273082A (ja) * 1991-02-28 1992-09-29 Toyota Central Res & Dev Lab Inc 追尾アンテナ装置
JPH0534591U (ja) * 1991-10-16 1993-05-07 三菱電機株式会社 モノパルスホーミング装置
JPH0682547A (ja) * 1992-09-02 1994-03-22 Mitsubishi Electric Corp レーダ受信機
JPH0682545A (ja) * 1992-09-04 1994-03-22 Mitsubishi Electric Corp レーダ受信機
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JPH0850171A (ja) * 1994-08-05 1996-02-20 Nec Corp 位相調整器及び追尾受信機
JPH08248120A (ja) * 1995-03-15 1996-09-27 Mitsubishi Electric Corp レーダ受信機
JPH0968570A (ja) * 1995-08-31 1997-03-11 Mitsubishi Electric Corp レーダ受信機
JP2005020288A (ja) * 2003-06-25 2005-01-20 Fujitsu Ten Ltd 高周波数帯域ローカルリークのキャンセル回路、レーダ装置およびデジタル無線通信装置
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Publication number Priority date Publication date Assignee Title
JP2019212947A (ja) * 2018-05-31 2019-12-12 三菱電機株式会社 アンテナ装置
JP7266973B2 (ja) 2018-05-31 2023-05-01 三菱電機株式会社 アンテナ装置

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