JP2016032290A - Oscillation array - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably output a plurality of oscillation signals having different phases.SOLUTION: An oscillation array 100 comprises: a first oscillation unit 1 which outputs a first oscillation signal of a first frequency; a second oscillation unit 2 which outputs a second oscillation signal of the first frequency; and a resonance unit 5 which resonantly couples the first oscillation signal and the second oscillation signal in a state in which the first oscillation signal and the second oscillation signal are synchronized in respectively different phases by coupling the resonance unit 5 to the first oscillation unit 1 and the second oscillation unit 2 in electric field or magnetic field. The resonance unit 5 comprises a loop line which couples the first oscillation unit 1 and the second oscillation unit 2 in electric field or magnetic field, and a variable reactance element provided in the loop line.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an oscillation array that outputs and radiates a plurality of oscillation signals having different phases.

  Conventionally, an oscillation circuit that outputs a plurality of oscillation signals whose phase differences are adjusted is known. For example, Patent Document 1 discloses a variable phase difference oscillator that adjusts the phase of an oscillation signal output from each oscillator by a coupling circuit provided between the plurality of oscillators.

  FIG. 10 is a diagram showing a configuration of a conventional oscillation circuit 900. As shown in FIG. The oscillation circuit 900 includes an oscillator 910, an oscillator 920, and a coupler 930. The oscillator 910 is a push-push oscillator having a microstrip line ring resonator 911, a negative resistance circuit 912 using HEMT, and a negative resistance circuit 913 using HEMT. The oscillator 920 is a push-push oscillator having a microstrip line ring resonator 921, a negative resistance circuit 922 using HEMT, and a negative resistance circuit 923 using HEMT.

  The coupler 930 is a resonator whose reflection coefficient and transmission coefficient are asymmetrical. By adjusting the variable capacitance incorporated in the coupler 930, the high frequency impedance when the coupler 930 is viewed from the oscillator 910 and the high frequency impedance when the coupler 930 is viewed from the oscillator 920 are adjusted. As a result, the phase difference between the phase of the oscillation signal output from the oscillator 910 and the phase of the oscillation signal output from the oscillator 920 can be adjusted.

JP 2011-244382 A

  However, the conventional coupler 930 is a slightly complicated circuit configuration that realizes the oscillation phase difference variable function by the asymmetry of the circuit structure and the asymmetric impedance characteristic of the resonance frequency variable, and therefore the generality of the circuit configuration is poor. There are issues in design and versatility.

  Accordingly, the present invention has been made in view of these points, and an object of the present invention is to provide an oscillation array that can output a plurality of oscillation signals having small design restrictions and different phases.

  In the first aspect of the present invention, a first oscillation unit that outputs a first oscillation signal having a first frequency, a second oscillation unit that outputs a second oscillation signal having the first frequency, and the first oscillation unit. And the first oscillation signal and the second oscillation signal in a state in which the first oscillation signal and the second oscillation signal are synchronized at different phases by being coupled to the second oscillation unit by an electric field or a magnetic field. And an oscillating array comprising: a resonating unit that resonates and couples.

  The resonating unit may include a loop line coupled to the first oscillating unit and the second oscillating unit by an electric field or a magnetic field, and a first variable reactance element provided in the loop line. The second oscillation unit outputs the second oscillation signal having a phase different from that of the first oscillation signal by an amount corresponding to a voltage applied to the first variable reactance element.

  The resonating unit further includes a second reactance element provided at a position where the electric field generated by the first oscillation signal is maximized in the resonating unit and having a variable range of reactance different from the first variable reactance element. May be. For example, the capacitance value of the first variable reactance element changes based on a voltage applied to the inside of the loop line.

  The first oscillating unit is electrically coupled to the resonating unit at a first position in the resonating unit, and the first variable reactance element is provided at a position where the electric field generated by the first oscillating signal is minimized in the resonating unit. It may be done. The second oscillating unit may be coupled to the resonating unit at a position where an electric field generated by the first oscillation signal is minimized in the resonating unit. The second oscillation unit may be magnetically coupled to the resonance unit at a second position where a magnetic field generated by the first oscillation signal in the resonance unit is minimized. The first oscillating unit and the second oscillating unit may function as an antenna that radiates radio waves having the same polarization.

  According to the present invention, it is possible to provide an oscillation array that can stably output a plurality of oscillation signals having different phases.

2 is a schematic diagram for explaining a concept of an oscillation array 100. FIG. 3 is a diagram illustrating a configuration example of a resonator 5. FIG. FIG. 6 is a diagram showing a modification of the resonator 10. It is a figure explaining the phase of each oscillation signal. It is a figure which shows the structure of the oscillation array 200 which concerns on 1st Example. It is a figure which shows the structure of the oscillation array 300 which concerns on 2nd Example. It is a figure which shows the structure of the oscillation array 400 which concerns on 3rd Example. It is a figure which shows the structure of the oscillation array 500 which concerns on 4th Example. It is a figure which shows the structure of the oscillation array 700 which concerns on 5th Example. FIG. 6 is a diagram showing a configuration of a conventional oscillation circuit 900.

  FIG. 1 is a schematic diagram for explaining the concept of the oscillation array 100 according to the present embodiment. The oscillation array 100 includes an oscillator 1, an oscillator 2, an oscillator 3, an oscillator 4, and a resonator 5. The oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4 have an oscillation circuit, and generate a resonant wave field when a voltage is applied. The oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4 are configured by, for example, a slot line or strip line formed on a substrate, and a negative resistance circuit including a Gunn diode, HEMT, or the like.

Oscillator 1, oscillator 2, oscillator 3 and the oscillator 4 outputs a substantially oscillation signal having the same frequency f _0. An oscillation signal output from at least one of the oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4 oscillates at a phase different from that of an oscillation signal output from another oscillation circuit.

The resonator 5 resonates at the oscillation frequency f ₀ of the oscillation signals of the oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4. The resonator 5 includes, for example, a loop-shaped slot line or microstrip line whose circumference is equal to the wavelength λ at the oscillation frequency f ₀ . The resonator 5 is coupled to at least two oscillators of the oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4 by an electric field or a magnetic field, so that at least two oscillators are synchronized with each other in different phases. Resonantly coupled with the oscillation signal output from the oscillator. In the present specification, “A and B are coupled” means that A and B are coupled by an electric field or a magnetic field.

  In the example shown in FIG. 1, the oscillator 1 and the oscillator 2, and the oscillator 3 and the oscillator 4 are coupled to the resonator 5 at positions opposite to the resonator 5. The oscillator 3 and the oscillator 4 are coupled to the resonator 5 at a position intermediate between a position where the oscillator 1 is coupled to the resonator 5 and a position where the oscillator 2 is coupled to the resonator 5. Since the oscillating array 100 has such a configuration, the resonant wave field generated by the oscillator 1 and the oscillator 2 and the resonant wave field generated by the oscillator 3 and the oscillator 4 and the resonant wave field on the resonator 5 coupled with each of the resonant wave field are mutually Orthogonal (degenerate).

  The oscillator 1 and the oscillator 2 are mutually synchronized with the same phase and the same frequency via the resonator 5. The oscillator 3 and the oscillator 4 are mutually synchronized with the same phase and the same frequency via the resonator 5. The oscillator 1 and the oscillator 2, and the oscillator 3 and the oscillator 4 are mutually synchronized at the same frequency with different phases. With such a configuration, the oscillation array 100 can output a plurality of oscillation signals having the same frequency and different phases.

  Here, the resonator 5 has a variable reactance element, and the reactance viewed from the oscillator 1 and the oscillator 2 is different from the reactance viewed from the oscillator 3 and the oscillator 4. Therefore, by applying a voltage to the variable reactance element of the resonator 5, the voltage is applied to the variable reactance element between the oscillation signal generated by the oscillator 1 and the oscillator 2 and the oscillation signal generated by the oscillator 3 and the oscillator 4. It is possible to make the perturbation variable by generating a phase difference according to the voltage to be applied.

  FIG. 2 is a diagram illustrating a configuration example of the resonator 5. The resonator 10 shown in FIG. 2A includes a slot line 11 having a length equal to the wavelength λ, and a variable reactance element 12 provided in the slot line 11. The variable reactance element 12 is a varactor diode, for example, and its capacitance changes according to a voltage applied from the outside.

  In the resonator 10, the variable reactance element 12 is provided at a position y1 where the variable reactance element 12 is coupled to the oscillator 3 in FIG. The resonator 10 is electrically coupled to the oscillator 1 and the oscillator 2 at positions x1 and x2 that are separated by λ / 4 along the slot line 11 from the position y1 where the variable reactance element 12 is provided. In this case, the position y1 where the variable reactance element 12 is provided is a node position where the electric field by the oscillator 1 and the electric field by the oscillator 2 are minimized, and therefore the variable reactance element 12 has almost no influence on the oscillator 1 and the oscillator 2. Don't give.

  On the other hand, since the position y1 of the variable reactance element 12 is a position where an antinode of the electric field is generated by the oscillator 3, the oscillator 3 is affected by the capacitance change of the variable reactance element 12. As a result, the phase of the oscillation signal output from the oscillator 3 is stabilized in a state where the phase of the oscillation signal output from the oscillator 1 and the oscillator 2 is shifted by a phase corresponding to the capacitance perturbation of the variable reactance element 12. The oscillator 4 outputs an oscillation signal having the same phase as that of the oscillator 3 by mutual synchronization with the oscillator 3 via the resonator 10. In this way, since the oscillation array 100 includes the resonator 10 as the resonator 5, the oscillator 3 and the oscillator 4 have the same frequency as the oscillation signals output from the oscillator 1 and the oscillator 2 and are applied to the variable reactance element 12. An oscillation signal whose phase is different by an amount corresponding to the applied voltage is output.

  The resonator 20 shown in FIG. 2B includes an MSL (microstrip line) 21 having a length equal to the wavelength λ, and a variable reactance element 22 connected in parallel or in series to the MSL 21. The variable reactance element 22 is provided at a position y1 where the variable reactance element 22 is coupled to the oscillator 3 in FIG. 1, similarly to the variable reactance element 12 in FIG. Even when the oscillation array 100 includes the resonator 20 as the resonator 5, the oscillator 3 and the oscillator 4 have the same frequency as the oscillation signals output from the oscillator 1 and the oscillator 2, and have voltages applied to the variable reactance element 22. Outputs oscillation signals with different phases by the corresponding amount.

  The resonator 30 shown in FIG. 2C includes a microstrip planar circuit resonator 31 and a variable reactance element 32 provided so as to straddle a slit formed in the microstrip planar circuit resonator 31. The slit has a rectangular shape in which the X direction that connects the oscillator 1 and the oscillator 2 in the oscillation array 100 is longer than the Y direction that connects the oscillator 3 and the oscillator 4, and the variable reactance element 32 is It is connected to both sides of the slit in the short direction. In this case, since the variable reactance element 32 is provided, the flow of the high-frequency current in the Y direction is hindered. As a result, even when the oscillation array 100 includes the resonator 30 as the resonator 5, the oscillator 3 and the oscillator 4 have the same frequency as the oscillation signals output from the oscillator 1 and the oscillator 2 and are applied to the variable reactance element 32. Oscillation signals that differ in phase by an amount corresponding to the voltage to be output are output.

  A resonator 40 shown in FIG. 2D includes a half-wavelength coupled slot line resonator 41 and a variable reactance element 42. The variable reactance element 42 is provided at the antinode of the electric field generated in the X direction indicated by the solid line arrow in FIG. 2D, and changes the phase of the oscillation signal corresponding to the electric field generated in the X direction. .

  On the other hand, the position where the variable reactance element 42 is provided is the position of the node of the electric field generated in the Y direction indicated by the dashed arrow in FIG. Therefore, it hardly affects the phase of the oscillation signal corresponding to the electric field generated in the Y direction. As a result, even when the oscillation array 100 includes the resonator 40 as the resonator 5, the oscillator 3 and the oscillator 4 have the same frequency as the oscillation signals output from the oscillator 1 and the oscillator 2 and are applied to the variable reactance element 42. Oscillation signals that differ in phase by an amount corresponding to the voltage to be output are output.

  FIG. 3 is a view showing a modification of the resonator 10 shown in FIG. The resonator 10a shown in FIG. 3A is the same as the resonator 10 shown in FIG. The resonator 10b shown in FIG. 3B is resonant in that it has a variable reactance element 13 provided at a position y2 that is separated from the position y1 where the variable reactance element 12 is provided along the slot line 11 by λ / 2. Different from the vessel 10a. The variable reactance element 13 has the same capacity as the variable reactance element 12.

  When the resonator 10 b is used as the resonator 5 in FIG. 1, the oscillation signal of the oscillator 3 is affected by the variable reactance element 12, and the oscillation signal of the oscillator 4 is affected by the variable reactance element 13. Shift by the phase of. As a result, in the oscillation array 100, even when the resonator 10b is used, the oscillator 1, the oscillator 2, the oscillator 3, and the oscillator 4 have different phases and frequencies as in the case where the resonator 10a is used. The same oscillation signal is output.

  The resonator 10c shown in FIG. 3C has a position x2 that is separated from the position y1 where the variable reactance element 12 is provided by λ / 4 along the slot line 11, that is, the oscillator 1 and the oscillator 2 shown in FIG. The resonator 10b is different from the resonator 10b in that the variable reactance element 14 is provided at a position where the electric field generated by the generated oscillation signal is maximized. The variable range of the capacitance of the variable reactance element 14 may be different from the variable range of the capacitance of the variable reactance element 12 and the capacitance of the variable reactance element 13.

  By providing the variable reactance element 14, the phases of the oscillation signal of the oscillator 1 and the oscillation signal of the oscillator 2 are shifted according to the capacitance of the variable reactance element 14. When the variable capacitance range of the variable reactance element 14 is different from the variable capacitance ranges of the variable reactance element 12 and the variable reactance element 13, the phase of the oscillation signal of the oscillator 1 and the phase of the oscillation signal of the oscillator 2 are set as follows. The phase can be adjusted to a range different from the phase of the oscillation signal of the oscillator 4.

  The resonator 10d shown in FIG. 3D has a variable reactance element 15 provided at a position x1 that is separated from the position y1 where the variable reactance element 14 is provided along the slot line 11 by λ / 2. Different from the container 10c. The variable capacitance range of the variable reactance element 15 is equal to the variable capacitance range of the variable reactance element 14. When the resonator 10d is used as the resonator 5 in the oscillation array 100, the same operation as the resonator 10c is performed.

  FIG. 4 is a diagram illustrating the phase of each oscillation signal when a plurality of oscillation circuits are coupled to the resonator 10a. The resonator 10a shown in FIG. 4 is coupled to the oscillation circuit at any of the positions x1, x2, y1, and y2 in the figure. The oscillator 101, the oscillator 102, the oscillator 103, and the oscillator 104 in FIG. 4 are oscillation circuits that are electrically coupled to the resonator 10a. Further, the oscillator 112 and the oscillator 114 in FIG. 4 are oscillation circuits that are magnetically coupled to the resonator 10a.

  The resonator 10a in FIG. 4A is electric field coupled with the oscillator 101 at the position x1, and is electric field coupled with the oscillator 104 at the position y2. The oscillator 104 is electrically coupled to the resonator 5 at a position y2 on the slot line 11 of the resonator 10a where the electric field generated by the oscillation signal generated by the oscillator 101 is minimized. Since the variable reactance element 12 is provided at the position y1 in the resonator 10a, if the phase of the oscillation signal output from the oscillator 101 is θ, the oscillation signal output from the oscillator 104 is affected by the variable reactance element 12. With respect to θ, the phase changes by Δα corresponding to the voltage applied to the variable reactance element 12, and becomes θ ± Δα. The magnitude of Δα is controlled based on the voltage applied to the variable reactance element 12, that is, the voltage applied to the inside of the slot line 11.

  The resonator 10a in FIG. 4B is electric field coupled with the oscillator 101 at the position x1. The resonator 10a is magnetically coupled to the oscillator 112 at a position x2 in the slot line 11 where the magnetic field generated by the oscillation signal generated by the oscillator 101 is minimized. Since the variable reactance element 12 is provided at the position y1 where the electric field generated by the oscillation signal output from the oscillator 112 is maximized, if the phase of the oscillation signal output from the oscillator 101 is θ, the oscillation signal output from the oscillator 112 is Under the influence of the variable reactance element 12, the phase changes by Δα with respect to θ, and becomes θ ± Δα.

  4C is coupled to the oscillator 101 at the position x1, is coupled to the oscillator 102 at the position x2, is coupled to the oscillator 103 at the position y1, and is coupled to the oscillator 104 at the position y2. ing. Since the variable reactance element 12 is provided at the position y1 in the resonator 10a, if the phase of the oscillation signal output from the oscillator 101 is θ, the oscillation signal output from the oscillator 103 is affected by the variable reactance element 12. Thus, the phase changes by Δα with respect to θ. The phase of the oscillator 104 that is mutually synchronized with the oscillator 103 is θ ± Δα. Even if all the oscillators are magnetically coupled to the resonator 10a, an equivalent function can be realized.

  The resonator 10a in FIG. 4 (d) is electric field coupled with the oscillator 101 at the position x1, magnetically coupled with the oscillator 112 at the position x2, electric field coupled with the oscillator 103 at the position y1, and magnetically coupled with the oscillator 114 at the position y2. ing. Since the variable reactance element 12 is provided at the position y1 in the resonator 10a, if the phase of the oscillation signal output from the oscillator 101 is θ, the oscillation signal output from the oscillator 103 is affected by the variable reactance element 12. Thus, the phase changes by Δα with respect to θ. When the phase of the oscillation signal output from the oscillator 114 is θ, the phase of the oscillation signal output from the oscillator 112 changes by Δα with respect to θ due to the influence of the variable reactance element 12.

<First embodiment>
FIG. 5 is a diagram illustrating the configuration of the oscillation array 200 according to the first embodiment. The oscillation array 200 includes a plurality of oscillators 201 (oscillator 201-1, oscillator 201-2, oscillator 201-3) and a plurality of slot line resonators 50 (resonator 50-1, resonance) that are electrically coupled to the respective oscillators 201. 50-2).

The oscillator 201 includes a slot line 210 having an elongated loop shape, and a Gunn diode 211 and a Gunn diode 212 provided in the slot line 210. When a voltage is applied to the inside of the slot line 210, the Gunn diode 211 and the Gunn diode 212 oscillate, and an oscillation signal having a frequency f ₀ is output. When the wavelength of the oscillation signal is λ, the circumferential length of the slot line 210 is 3λ.

  The resonator 50 includes a loop-shaped slot line 51 and a variable reactance element 52 provided in the slot line 51. The circumferential length of the slot line 51 is λ, and the distances along the slot line 51 of the position a and position b, the position b and position c, the position c and position d, and the position d and position a are λ / 4. . The variable reactance element 52 provided at the position b is located at a position λ / 4 from the position a where the oscillator 201-1 and the resonator 50 are electrically coupled via the microstrip line 53, that is, at the position of the node of the electric field. The phase of the oscillation signal output from the oscillator 201-1 is not affected.

On the other hand, since the variable reactance element 52 is located at a position λ / 2 from the position d where the oscillator 201-2 and the resonator 50 are coupled to each other through the microstrip line 54, that is, at the antinode of the electric field, 2 affects the phase of the oscillation signal output. As a result, when the phase of the oscillation signal output from the oscillator 201-1 is θ, the phase of the oscillation signal output from the oscillator 201-2 is θ ± Δα1. Δα1 is determined according to the voltage applied to the inside of the slot line 51 of the resonator 50-1. For the same reason, the phase of the oscillation signal output from the oscillator 201-3 is θ ± Δα1 ± Δα2. Δα2 is determined according to the voltage applied to the inside of the slot line 51 of the resonator 50-2. Each of the plurality of oscillators 201 functions as an antenna that radiates radio waves having the same polarization.
As described above, the oscillation array 200 can output a plurality of oscillation signals having the same frequency and different phases depending on the voltage applied to the resonator 50.

<Second embodiment>
FIG. 6 is a diagram illustrating the configuration of the oscillation array 300 according to the second embodiment. The oscillation array 300 includes a plurality of oscillators 301 (oscillators 301-1 and 301-2), an oscillator 302, and a plurality of resonators 60 (resonators 60-1 and 60-2). The resonator 60-1 is magnetically coupled to the oscillator 301-1 at a position “a”, and is electrically coupled to the oscillator 302 and the microstrip line 63 at a position “b”. In addition, the resonator 60-2 is electrically coupled to the oscillator 302 at the position a and magnetically coupled to the oscillator 301-2 at the position b.

  The resonator 60 is equivalent to the resonator 10 illustrated in FIG. 2A, and includes a circular slot line 61 and a variable reactance element 62 provided in the slot line 61. The circumferential length of the slot line 61 is equal to the wavelength λ of the oscillation signal output from the oscillator 301.

The oscillator 301 includes an elongated loop-shaped slot line 310, and a Gunn diode 311 and a Gunn diode 312 provided in the slot line 310. When the wavelength of the oscillation signal is λ, the circumferential length of the slot line 310 is 2λ. When a voltage is applied to the inside of the slot line 310, the Gunn diode 311 and the Gunn diode 312 oscillate, and an oscillation signal having a frequency f ₀ is output. In the oscillator 301-1, the electric field is minimized in the vicinity of the position a of the resonator 60-1, so that the oscillator 301-1 is magnetically coupled to the resonator 60-1.

The oscillator 302 includes an elongated loop-shaped slot line 320, and a Gunn diode 321 and a Gunn diode 322 provided in the slot line 320. When the wavelength of the oscillation signal is λ, the circumferential length of the slot line 320 is 3λ. When a voltage is applied to the inside of the slot line 320, the Gunn diode 321 and the Gunn diode 322 oscillate, and an oscillation signal having a frequency f ₀ is output. In the oscillator 302, the electric field is maximized in the vicinity of the position b of the resonator 60-1, so that the electric field is coupled to the resonator 60-1 via the microstrip line 63.

  The relationship between the oscillator 301-1, the resonator 60-1, and the oscillator 302 is equivalent to the relationship shown in FIG. 4B. If the phase of the oscillation signal output from the oscillator 301-1 is θ, the oscillator 302 The phase of the oscillation signal output from is θ ± Δα1. Δα1 is determined according to the voltage applied to the inside of the slot line 61 of the resonator 60-1. For the same reason, the phase of the oscillation signal output from the oscillator 301-2 is θ ± Δα1 ± Δα2. Δα2 is determined according to the voltage applied to the inside of the slot line 61 of the resonator 60-2. The plurality of oscillators 301-1 and 301-2 each function as an antenna that radiates radio waves having the same polarization. Thus, the oscillation array 300 can output a plurality of oscillation signals having the same frequency and different phases depending on the voltage applied to the resonator 60.

<Third embodiment>
FIG. 7 is a diagram illustrating a configuration of an oscillation array 400 according to the third embodiment. The oscillation array 400 includes a plurality of oscillators 401 and a plurality of resonators 50 that are electrically coupled to the respective oscillators 401.

  The oscillator 401 includes an elongated loop-shaped slot line 410 and a plurality of Gunn diodes provided in the slot line 410. When a voltage is applied to the inside of the slot line 410, each Gunn diode oscillates to generate a phase-synchronized electric field indicated by an arrow. As a result, each oscillator 401 functions as a slot array antenna.

  The resonator 50 has the same configuration as the resonator 50 in the oscillation array 200 according to the first embodiment. The resonator 50-1 is electric field-coupled via the oscillator 401-1 and the microstrip line 53 at the position “a”, and is electrically coupled via the oscillator 401-2 and the microstrip line 54 at the position “d”. Since the distance between the position a and the position b where the variable reactance element 52 is provided is λ / 4, the variable reactance element 52 hardly affects the oscillation signal of the oscillator 401-1. On the other hand, since the distance between the position d and the position b is λ / 2, the variable reactance element 52 affects the oscillation signal of the oscillator 401-2, and the phase of the oscillation signal of the oscillator 401-2 is the same as that of the oscillator 401-1. The phase of the oscillation signal is shifted by Δα1 corresponding to the voltage applied to the resonator 50.

Similarly, the phase of the oscillation signal of the oscillator 401-3 is shifted by Δα2 with respect to the phase of the oscillation signal of the oscillator 401-2. Each of the plurality of oscillators 401 functions as an antenna that radiates radio waves having the same polarization.
In this way, the oscillation array 400 can output a plurality of oscillation signals having the same frequency and adjustable phases. That is, the oscillation array 400 is equivalent to having a plurality of antennas that radiate beams having different phases, so that an oscillation array with a built-in antenna function in which the direction of the beam is variable can be realized.

<Fourth embodiment>
FIG. 8 is a diagram illustrating a configuration of an oscillation array 500 according to the fourth embodiment. The oscillation array 500 includes the oscillation array 200 shown in FIG. 5 and an antenna array 600 that is electromagnetically coupled to the oscillation array 200. The antenna array 600 includes an antenna array 601-1 that is electromagnetically coupled to the oscillator 201-1, an antenna array 601-2 that is electromagnetically coupled to the oscillator 201-2, and an antenna array 601-3 that is electromagnetically coupled to the oscillator 201-3. Have Each antenna array 601-1, 601-2, 601-3 has a plurality of oscillators 602 that are electromagnetically coupled to each other. The oscillator 602 has the same configuration as that of the oscillator 301 shown in FIG.

  When the oscillation array 200 and the antenna array 600 are electromagnetically coupled, the electric fields synchronized with the oscillation signals generated by the oscillator 201-1, the oscillator 201-2, and the oscillator 201-3 are changed to the antenna arrays 601-1 and 601-. 2 and 601-3. The antenna arrays 601-1, 601-2, and 601-3 radiate the electric fields generated by the oscillators 201-1, 201-2, and 201-3 in a synchronized manner with the plurality of oscillators 602. Each of the plurality of oscillators 602 functions as an antenna that radiates radio waves having the same polarization. The phase difference between the oscillation signals generated by the oscillators 201-1, 201-2, and 201-3 is determined based on the voltages applied to the resonator 50-1 and the resonator 50-2, respectively. Therefore, the oscillation array 500 can oscillate and emit each of the plurality of beams having a phase difference controlled based on the voltages applied to the resonator 50-1 and the resonator 50-2.

<Fifth embodiment>
FIG. 9 is a diagram illustrating a configuration of an oscillation array 700 according to the fifth embodiment. In the oscillation array 700, a plurality of oscillation circuits in which a plurality of Gunn diodes are provided in each of the linear slot lines 701, 702, 703, 704, 705, and 706 are arranged in parallel.

  Further, a resonator 50 is provided in the vicinity of the end portions of two adjacent slot lines, and each slot line and the resonator 50 are magnetically coupled. Specifically, a resonator 50-1 is provided in the vicinity of the ends of the slot line 701 and the slot line 702, and the resonator 50-1 is magnetically coupled to the slot line 701 and the slot line 702. A resonator 50-2 is provided near the ends of the slot line 702 and the slot line 703, and the resonator 50-2 is magnetically coupled to the slot line 702 and the slot line 703. Similarly, a resonator 50-3, a resonator 50-4, and a resonator 50-5 are provided.

The relationship between the resonator 50-1, the slot line 701, and the slot line 702 corresponds to the relationship between the resonator 10a, the oscillator 112, and the oscillator 114 in FIG. That is, assuming that the phase of the oscillation signal generated by the slot line 701 is θ and the frequency is f ₀ , the oscillation signal generated by the slot line 702 has a phase of θ ± Δα and a frequency of f ₀ . Here, Δα is determined based on the control voltage applied to the resonator 50-1. Similarly, a phase difference determined based on a control voltage applied to the corresponding resonator 50 is generated between an oscillation signal generated by each oscillation circuit and an oscillation signal generated by an adjacent oscillation circuit. The slot lines 701 to 706 each function as an antenna that radiates radio waves having the same polarization.
Thus, even in the configuration of the oscillation array 700, it is possible to output a plurality of oscillation signals having the same frequency and adjustable phases. Therefore, the oscillation array 700 functions as an RF module having a combined beam directivity variable oscillation and antenna function.

[Effect in this embodiment]
In this embodiment, the degenerate resonance wave field and 2 to 4 oscillation wave fields are electromagnetically coupled, and the degeneration of the resonator is perturbed using a variable reactance element or the like, so that the mutual synchronization and phase difference of the oscillators can be obtained. Variable control can be performed. Since up to four oscillators can be controlled by coupling electric and magnetic fields, it is easy to make a two-dimensional oscillation array. It is also easy to construct a two-dimensional beam steering transmission module by integrating the oscillation system and the antenna system. A wide variety of flexible configurations can be realized by combining the structure and number of oscillators, the electric field / magnetic field interface, the type of reactance element, and the structure of the orthogonal resonator.

  As mentioned above, although this invention was demonstrated using embodiment by a Gunn diode as RF element, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1, 2, 3, 4 Oscillator 5, 10, 20, 30, 40, 50, 60 Resonator 11 Slot line 12, 13, 14, 15 Variable reactance element 21 Microstrip line 22 Variable reactance element 31 Microstrip planar circuit resonance 32, 42, 52, 62 Variable reactance element 41 Coupling slot line resonator 51, 61 Slot line 100, 200, 300, 400, 500, 700 Oscillation array 101, 102, 103, 104, 112, 114 Oscillator 201, 301 , 302, 401 Oscillator 210, 310, 320, 410 Slot line 211, 212, 311, 312, 321, 322 Gunn diode 600, 601 Antenna array 701, 702, 703, 704, 705, 706 Slot line 900 Oscillation times 910, 920 oscillators 911 and 921 micro-strip line ring resonator 912,913,922,923 negative resistance circuit 930 combiner

Claims (9)

A first oscillation unit that outputs a first oscillation signal having a first frequency;
A second oscillator for outputting a second oscillation signal of the first frequency;
By coupling the first oscillation unit and the second oscillation unit with an electric field or a magnetic field, the first oscillation signal and the second oscillation signal are synchronized with each other in different phases. A resonating unit that is resonantly coupled to the second oscillation signal;
An oscillation array comprising: The resonance part is
A loop line coupled to the first oscillation unit and the second oscillation unit by an electric field or a magnetic field;
A first variable reactance element provided on the loop line;
Having
The oscillation array according to claim 1. The second oscillation unit outputs the second oscillation signal having a phase different from that of the first oscillation signal by an amount corresponding to a voltage applied to the first variable reactance element;
The oscillation array according to claim 2. The resonating unit further includes a second reactance element that is provided at a position where an electric field generated by the first oscillation signal is maximized in the resonating unit, and has a reactance variable range different from the first variable reactance element.
The oscillation array according to claim 2 or 3. The first variable reactance element has a capacitance value that changes based on a voltage applied to the inside of the loop line.
The oscillation array according to any one of claims 2 to 4. The first oscillating unit is electrically coupled to the resonating unit at a first position in the resonating unit,
The first variable reactance element is provided at a position where an electric field generated by the first oscillation signal is minimized in the resonance unit.
The oscillation array according to any one of claims 2 to 5. The second oscillating unit is coupled with the resonating unit at a position where an electric field generated by the first oscillation signal in the resonating unit is minimized;
The oscillation array according to any one of claims 1 to 6. The second oscillation unit is magnetically coupled to the resonance unit at a second position where a magnetic field generated by the first oscillation signal in the resonance unit is minimized;
The oscillation array according to any one of claims 1 to 6. The first oscillating unit and the second oscillating unit function as an antenna that radiates radio waves of the same polarization.
The oscillation array according to any one of claims 1 to 8.

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