Dual-frequency phase customizable phase shifter based on coupled resonator structure

Abstract

The invention discloses a dual-frequency phase customizable phase shifter based on a coupled resonator structure. The dual-passband phase shifter comprises a dual-mode resonance module located at an input position, low-frequency and high-frequency-45-degree / 0-degree / 45-degree phase control modules located in the middle of a circuit side by side, and a dual-frequency independent 0-degree / 180-degree phase control module located at an output position. The three modules interact through coupling gaps and are reasonably arranged, combined and designed according to expected phases, input signals of specified frequency bands can be modulated in amplitude and phase, and phase distribution of two groups of double-frequency independent phases which do not change along with frequency is realized in two specified frequency bands respectively. According to the dual-frequency phase shifter, the dual-frequency independent designable phase characteristic can be achieved, namely, the phase shifting performance of the two frequency bands is mutually independent, a phase shifting value can be designated for design, and the frequencies of the two frequency bands can be flexibly designed.

Description

Technical Field

[0001] The invention belongs to the technical field of phase shifters, in particular to a dual-frequency phase customizable phase shifter based on a coupled resonator structure. Background Art

[0002] Current wireless systems are developing rapidly in the direction of multi-function, miniaturization, high frequency, multi-user or multi-target. In the field of wireless communications, with the surge in mobile communication users and data volume, multi-beam phased arrays that can simultaneously generate multiple independent beams can greatly improve communication efficiency and are one of the key technologies for the new generation of communication systems. At the same time, dual-frequency and multi-frequency technologies can effectively increase the system's operating modes and information volume, and have always been an important research direction for wireless systems. Combining dual-frequency technology with multi-beam phased array technology, research on dual-frequency common-aperture multi-beam phased arrays is carried out, making full use of the two dimensions of frequency domain and spatial domain to jointly achieve functional and performance improvements, which is expected to promote the leapfrog development of multi-beam systems.

[0003] Phase shifters are a key component of phased array antennas and directly determine the function and performance of phased arrays. Regardless of the beam control method, the core is phase control. Traditional low-loss passive phase shifting methods include switch switching method, loading capacitor method, and reflection load method. There are three difficulties in achieving dual-frequency independent phase control. At present, it is rare to see work published on a circuit structure that realizes the dual-frequency independent phase shifting function. There are even fewer studies on further dual-frequency independent frequency and phase control, 360° phase realization, etc.

[0004] In summary, dual-frequency phase shifters with independently designable phase characteristics, that is, dual-frequency phase shifters in which the phase shift performances of the two frequency bands are independent of each other and the phase shift values ​​can be specified for design, still need to be studied. Summary of the invention

[0005] The purpose of the present invention is to provide a dual-frequency phase customizable phase shifter based on a coupled resonator structure to solve the problems of the existing dual-frequency phase shifter, such as incomplete independence of dual-passband performance, limited phase design, and inflexible frequency design.

[0006] The technical solution to achieve the purpose of the present invention is: a dual-frequency phase customizable phase shifter based on a coupled resonator structure, including a dual-frequency phase shifter structure, which can achieve: for input signals in two specified frequency bands, the amplitude can pass and the phase can be modulated, and two sets of dual-frequency independent phase distributions that do not change with frequency are achieved in the two specified frequency bands.

[0007] Furthermore, the dual-frequency phase shifter structure includes: an input dual-mode resonance module located at the input position, a low-frequency -45° / 0° / 45° phase control module and a high-frequency -45° / 0° / 45° phase control module arranged side by side and relatively, and a dual-frequency independent 0° / 180° phase control module located at the output position; each module interacts with each other through a coupling gap to achieve the function that the amplitude at the dual frequency can pass and the phase is configured according to the expected value;

[0008] The input dual-mode resonance module is a resonator with two resonance modes. The resonance frequencies of the two resonance modes, mode 1 and mode 2, respectively correspond to the low-frequency and high-frequency operating frequencies, thus achieving a bandpass characteristic under dual frequencies.

[0009] The low-frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the low passband;

[0010] The high frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the high passband;

[0011] The dual-frequency independent 0° / 180° phase control module, based on the input dual-mode resonance module, utilizes the voltage distribution in two resonance modes and controls the 0° / 180° phase at two frequencies by controlling the feeding position.

[0012] Furthermore, the low-frequency -45° / 0° / 45° phase control module includes a U-shaped single-frequency resonator 1 and an open-circuit configurable branch 1 loaded in the middle of the U-shaped single-frequency resonator 1 and designed according to the expected phase.

[0013] Furthermore, the high-frequency -45° / 0° / 45° phase control module includes a U-shaped single-frequency resonator 2 and an open-circuit configurable branch 2 loaded in the middle of the U-shaped single-frequency resonator 2 and designed according to the expected phase.

[0014] Furthermore, the input dual-mode resonance module is an open-circuit branch-loaded step impedance resonator, which generates two resonance modes, mode one and mode two, by designing the impedance value and the electrical length.

[0015] Furthermore, the dual-frequency independent 0° / 180° phase control module is designed as follows: based on the input dual-mode resonance module, the voltage distribution under the two resonance modes is utilized to control the 0° / 180° phase at the two frequencies by controlling the feeding position of the signal output port.

[0016] Furthermore, the feed positions that can be selected by the signal output port include:

[0017] Position 1: The voltage distributions of mode 1 and mode 2 are both positive;

[0018] Position 2: The output voltage of mode 1 is positive, and the voltage distribution of mode 2 is negative;

[0019] Position 3: The voltage distributions of mode 1 and mode 2 are both negative;

[0020] Position 4: The output voltage of mode 1 is negative and the output voltage of mode 2 is positive.

[0021] Furthermore, when the feeding position of the signal output port is position 1, the reference phase is set to 0° for low frequency and 0° for high frequency; when the signal output port moves from position 1 to position 2, the output voltage direction of mode one remains unchanged, and the output voltage of mode two is opposite to the voltage fed from position 1, thereby achieving a phase of 0° for low frequency and 180° for high frequency; when the signal output port moves from position 1 to position 3, the output voltage directions of mode one and mode two are opposite to the voltage fed from position 1, thereby achieving a phase of 180° for low frequency and 180° for high frequency; when the signal output port moves from position 1 to position 4, the output voltage of mode one is opposite to the voltage fed from position 1, and the output voltage direction of mode two remains unchanged, thereby achieving a phase of 180° for low frequency and 0° for high frequency.

[0022] Furthermore, the low-frequency -45° / 0° / 45° phase control module or the high-frequency -45° / 0° / 45° phase control module is a branch-loaded half-wavelength resonator that can be freely designed for single-mode / dual-mode at a single frequency, specifically comprising:

[0023] When there is no branch loading, the U-shaped single-frequency resonator is a half-wavelength resonator with only one resonance mode. The resonance frequency is adjusted by adjusting the electrical length of the U-shaped single-frequency resonator, and the phase value is set as a reference of 0°;

[0024] When loaded with branches, the U-shaped single-frequency resonator has two resonance modes in the same frequency band, and the phase value is controlled to -45° / 45° by configurable branch length;

[0025] The operating frequencies of the low-frequency -45° / 0° / 45° phase control module and the high-frequency -45° / 0° / 45° phase control module are respectively close to the operating frequencies of mode 1 and mode 2 of the input dual-mode resonance module to achieve bandpass characteristics.

[0026] Compared with the prior art, the present invention has the following significant advantages: the present invention can realize dual-frequency independently designable phase characteristics, that is, the phase shift performance of the two frequency bands is independent of each other, the phase shift value can be specified for design, and the frequencies of the two frequency bands can be flexibly designed.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a dual-frequency phase customizable phase shifter based on a coupled resonator structure of the present invention.

[0029] Figure 2 : is an amplitude phase response diagram of a -45° / 0° / 45° phase control module of the present invention to achieve a -45° / 0° / 45° phase shift in one embodiment, wherein Figure 2 (a) is the amplitude response diagram of achieving -45° / 0° / 45° phase shift. Figure 2 (b) in the figure is the phase response diagram for achieving -45° / 0° / 45° phase shift.

[0030] Figure 3 The diagram is a diagram of four feeding positions of an output port of a dual-frequency independent 0° / 180° phase control module and voltage distributions in mode 1 and mode 2 in an embodiment.

[0031] Figure 4 The figure is a phase response diagram of two frequency bands 0° / 180° phase shift achieved by four feeding positions of the output port of a dual-frequency independent 0° / 180° phase control module in an embodiment.

[0032] Figure 5 The structure and design process diagram of a dual-frequency phase customizable phase shifter in an embodiment, in which the low-passband output quantization phases are 0°, -60°, -120°, and -180° respectively, and the high-passband output quantization phases are -330°, -220°, -110°, and 0° respectively.

[0033] Figure 6 The figure is a diagram of the amplitude response simulation result of the dual-frequency phase customizable phase shifter based on the coupled resonator structure in one embodiment of the present invention.

[0034] Figure 7 is a diagram of the phase response simulation results of a dual-frequency phase customizable phase shifter based on a coupled resonator structure in one embodiment. Figure 7 (a) is the simulation result of the phase response of the phase shifter in the low passband. Figure 7 (b) in the figure is the simulation result of the phase response of the phase shifter in the high passband. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In one embodiment, the present invention provides a dual-frequency phase customizable phase shifter based on a coupled resonator structure, including a dual-frequency phase shifter structure, which can achieve: for input signals in two specified frequency bands, the amplitude can be passed and the phase can be modulated, and two sets of dual-frequency independent phase distributions that do not vary with frequency can be achieved in the two specified frequency bands.

[0038] Further, in one embodiment, in combination Figure 1 The dual-frequency phase shifter structure includes: an input dual-mode resonance module located at the input position, a low-frequency -45° / 0° / 45° phase control module and a high-frequency -45° / 0° / 45° phase control module arranged side by side and relatively, and a dual-frequency independent 0° / 180° phase control module located at the output position; each module interacts with each other through a coupling gap to achieve the function that the amplitude at the dual frequency can pass and the phase is configured according to the expected value;

[0039] The input dual-mode resonance module is a resonator with two resonance modes. The resonance frequencies of the two resonance modes, mode 1 and mode 2, respectively correspond to the low-frequency and high-frequency operating frequencies, thus achieving a bandpass characteristic under dual frequencies.

[0040] The low-frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the low passband;

[0041] The high frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the high passband;

[0042] The dual-frequency independent 0° / 180° phase control module, based on the input dual-mode resonance module, utilizes the voltage distribution in two resonance modes and controls the 0° / 180° phase at two frequencies by controlling the feeding position.

[0043] Here, in some embodiments, the low-frequency -45° / 0° / 45° phase control module includes a U-shaped single-frequency resonator 1 and an open-circuit configurable branch 1 loaded in the middle of the U-shaped single-frequency resonator 1 and designed according to the expected phase.

[0044] Here, in some embodiments, the high frequency -45° / 0° / 45° phase control module includes a U-shaped single frequency resonator 2 and an open circuit configurable branch 2 loaded in the middle of the U-shaped single frequency resonator 2 and designed according to the expected phase.

[0045] Here, in some embodiments, the input dual-mode resonance module is an open-branch loaded step impedance resonator, and two resonance modes, mode 1 and mode 2, are generated by designing the impedance value and the electrical length.

[0046] Furthermore, in one of the embodiments, the dual-frequency independent 0° / 180° phase control module is designed as follows: based on the input dual-mode resonance module, the voltage distribution in the two resonance modes is utilized to control the 0° / 180° phase at the two frequencies by controlling the feeding position of the signal output port. The resonant frequency of the output dual-frequency independent 0° / 180° phase control module should be the same as that of the input dual-mode resonance module, that is, the voltage distribution of the two modules in mode one and mode two is consistent to achieve a bandpass characteristic.

[0047] Preferably, in some embodiments, the feed positions that can be selected by the signal output port include:

[0048] Position 1: The voltage distributions of mode 1 and mode 2 are both positive;

[0049] Position 2: The output voltage of mode 1 is positive, and the voltage distribution of mode 2 is negative;

[0050] Position 3: The voltage distributions of mode 1 and mode 2 are both negative;

[0051] Position 4: The output voltage of mode 1 is negative and the output voltage of mode 2 is positive.

[0052] like Figure 3 As shown, four feeding positions of the output port of the dual-frequency independent 0° / 180° phase control module of the present invention and the voltage distribution diagram of mode 1 and mode 2 are given. The voltage fed from the output port feeding positions 1, 2, 3, and 4 corresponds to points A, B, C, and D in the voltage distribution of mode 1 of the dual-mode resonator, and corresponds to points E, F, G, and H in the voltage distribution of mode 2. Among them, the voltage directions of A and D are opposite, the voltage directions of B and C are opposite, the voltage directions of E and F are opposite, the voltage directions of G and H are opposite, the voltage directions of E and H are the same, and the voltage directions of F and G are the same.

[0053] When the output port is at feeding position 1, the reference phase is set to 0° for low frequency and 0° for high frequency. Therefore, when the feeding position of the output port changes from 1 to 2, the voltage directions fed out by the two positions in mode 1 are the same, and the voltage directions fed out in mode 2 are opposite, so that the output phase response remains unchanged in the low passband corresponding to mode 1, and exhibits a 180° phase shift characteristic in the high passband corresponding to mode 2. When the feeding position of the output port changes from 1 to 3, the voltages fed out by the two positions in mode 1 and mode 2 are opposite to the voltage directions fed out in the mode corresponding to position 1, so the output phase response exhibits a 180° phase shift characteristic in both passbands corresponding to mode 1 and mode 2. When the feeding position of the output port changes from 1 to 4, the voltage directions fed out by the two positions in mode 1 are opposite, and the voltage directions fed out in mode 2 are the same, so the output phase response exhibits a 180° phase shift characteristic in the low passband corresponding to mode 1, and remains unchanged in the high passband corresponding to mode 2. In summary, by changing the feeding position of the output port, four different phase shift states of 0°, 0°; 0°, 180°; 180°, 180°; 180°, 0° can be achieved in the two passbands of the dual-frequency phase shifter, realizing independent 0° / 180° phase control of the dual frequencies.

[0054] like Figure 4 As shown, the phase response diagram of the four feeding positions of the output port of the output dual-frequency 0° / 180° phase control module of the present invention to achieve a 180° phase shift in two frequency bands is given. Taking the phase response of the phase shifter with the output port feeding position as position 1 as the reference phase, that is, the phases of the two frequency bands are 0° and 0°, the phase shifter with the output port feeding position selection position 2 achieves a phase shift of 0° and 180° in the low passband and high passband respectively, the phase shifter with the output port feeding position selection position 3 achieves a phase shift of 180° and 180° in the low passband and high passband respectively, and the phase shifter with the output port feeding position selection position 4 achieves a phase shift of 180° and 0° in the low passband and high passband respectively.

[0055] Further, in one of the embodiments, the low-frequency -45° / 0° / 45° phase control module or the high-frequency -45° / 0° / 45° phase control module, wherein the U-shaped single-frequency resonator 1, the U-shaped single-frequency resonator 2 and the loading branches cooperate with each other, and the branches that can be freely designed for single-mode / dual-mode under single frequency are loaded with half-wavelength resonators, specifically including:

[0056] When there is no branch loading, the U-shaped single-frequency resonator is a half-wavelength resonator with only one resonance mode. The resonance frequency is adjusted by adjusting the electrical length of the U-shaped single-frequency resonator, and the phase value is set as a reference of 0°;

[0057] When loaded with branches, the U-shaped single-frequency resonator has two resonance modes in the same frequency band, and the phase value is controlled to -45° / 45° by configurable branch length;

[0058] The operating frequencies of the low-frequency -45° / 0° / 45° phase control module and the high-frequency -45° / 0° / 45° phase control module are respectively close to the operating frequencies of mode 1 and mode 2 of the input dual-mode resonance module to achieve bandpass characteristics.

[0059] like Figure 2 As shown in the figure, taking the low passband as an example, the amplitude phase response diagram of the -45° / 0° / 45° phase control module to achieve the -45° / 0° / 45° phase shift is given. Figure 2 In (a), when the low-frequency -45° / 0° / 45° phase control module is not loaded with branches, the single-frequency resonator has only one resonant mode, and the phase value is set to the reference 0°; when the low-frequency -45° / 0° / 45° phase control module is loaded with branches, the single-frequency resonator has two resonant modes in the low-frequency band; in particular, when the branches are loaded as short branches, a right zero point will be generated on the right side of the passband, and when the branches are loaded as long branches, a left zero point will be generated on the left side of the passband. Figure 2 In (b), the phase response of the low-frequency -45° / 0° / 45° phase control module loaded with a short branch will undergo a downward phase jump at the right zero point, thereby achieving a phase shift of -45° within the passband compared with the phase response of the unloaded branch; the phase response of the module loaded with a long branch will undergo an upward phase jump at the left zero point, thereby achieving a phase shift of 45° within the passband compared with the phase response of the unloaded branch.

[0060] It should be noted that the above-mentioned input dual-mode resonance module, low-frequency -45° / 0° / 45° phase control module, high-frequency -45° / 0° / 45° phase control module, and output dual-frequency 0° / 180° phase control module are all independent of each other. Through the combined design of each module and the appropriate frequency deviation of each passband, the dual-frequency phase shifter of the present invention can be independent of each other and the phase can be customized.

[0061] As a specific example, in one of the embodiments, the present invention is further verified and explained.

[0062] The four dual-frequency phase shifters in this embodiment are all implemented on a Rogers 4003C dielectric board with a relative dielectric constant of 3.55, a loss tangent of 0.0027, and a thickness of 0.813 mm.

[0063] like Figure 5As shown, the design of the differential phase shift of -60° (low frequency) and 110° (high frequency) is given in this embodiment, that is, the design of the customized phase shift value of -60° for the low passband and 110° for the high passband between adjacent phase shifters. First, determine the target phases of the two passbands of phase shifter 1, phase shifter 2, phase shifter 3, and phase shifter 4 that meet the design requirements of the phase shift values ​​of -60° for the low passband and 110° for the high passband: the target phases of the low frequency are 0°, -60°, -120°, and -180°, respectively; the target phases of the high frequency are -330°, -220°, -110°, and 0°, respectively. Three steps are required to achieve the target phase of this embodiment:

[0064] Step 1, determine the design scheme of the 0° / 180° phase control module output by each phase shifter: the low-frequency target phase can be obtained by further design from 0°, 0°, -180°, -180° phase, and the high-frequency target phase can be obtained by further design from -360°, -180°, -180°, 0° phase. In the phase shifter, a phase difference of 360° can be equivalent to 0°, so the required low-frequency phase can be equivalent to 0°, 0°, 180°, 180°; the required high-frequency phase can be equivalent to 0°, 180°, 180°, 0°. Therefore, the phase values ​​required for the two passbands of phase shifter 1 are 0° and 0°; the phase values ​​required for the two passbands of phase shifter 2 are 0° and 180°; the phase values ​​required for the two passbands of phase shifter 3 are 180° and 180°; the phase values ​​required for the two passbands of phase shifter 4 are 180° and 0°. Because the phase value is relative, the feeding position of the output port of the phase shifter 1 used as a reference can be selected arbitrarily. In this embodiment, position 2 is selected as the feeding position of the output port of the phase shifter 1. Taking the phase shifter 1 as a reference, it can be determined that the output port of the phase shifter 2 should be selected at position 1; the output port of the phase shifter 3 should be selected at position 4; and the output port of the phase shifter 4 should be selected at position 3.

[0065] Step 2: Determine the design scheme of low-frequency and high-frequency -45° / 0° / 45° phase control modules of each phase shifter: Compare the low-frequency 0°, 0°, -180°, -180° phases achieved in step 1 with their target phases of 0°, -60°, -120°, -180°, and determine the design schemes of low-frequency -45° / 0° / 45° phase control modules of each phase shifter, respectively. 5° phase shift, no branch loading brings no phase shift; compare the high-frequency phases of -360°, -180°, -180°, 0° achieved in step 1 with their target phases of -330°, -220°, -110°, 0° to determine the design schemes of the high-frequency -45° / 0° / 45° phase control modules of each phase shifter, respectively, loading long branches brings 45° phase shift, loading short branches brings -45° phase shift, loading long branches brings 45° phase shift, and no branch loading brings no phase shift. The determined scheme can achieve low-passband phases of 0°, -45°, -135°, -180°, and high-passband phases of -315°, -225°, -135°, 0°.

[0066] Step three, determine the two-passband frequency shift scheme of each phase shifter: compare the low-frequency phases of 0°, -45°, -135°, and -180° achieved in step two with their target phases of 0°, -60°, -120°, and -180°, and determine that each phase shifter low-passband needs to be shifted to achieve a phase shift value of 0°, -15°, 15°, and 0°, respectively; compare the high-frequency phases of -315°, -225°, -135°, and 0° achieved in step two with their target phases of -330°, -220°, -110°, and 0°, and determine that each phase shifter high-passband needs to be shifted to achieve a phase shift value of -15°, 5°, 25°, and 0°, respectively.

[0067] It is known that the phase curve of the bandpass device is a quasi-linear straight line. By moving the center frequency of the bandpass curve, the phase curve will also move accordingly. That is, by moving the center frequency to the left, the phase curve moves to the left, resulting in a negative phase difference, thereby achieving a small range phase shift. According to the determined scheme, by adjusting the electrical length of the U-shaped single-frequency resonator 1 to achieve a small range phase shift of 0°, -15°, 15°, 0° of the low-frequency phase, and adjusting the electrical length of the U-shaped single-frequency resonator 2 to achieve a small range phase shift of -15°, 5°, 25°, 0° of the high-frequency phase, finally achieving low-frequency 0°, -60°, -120°, -180°; high-frequency -330°, -220°, -110°, 0° phase values. Figure 5 The structural diagram of step three is the final structural diagram of this embodiment.

[0068] like Figure 6As shown, the amplitude response simulation result diagram of the dual-frequency phase customizable phase shifter with low-passband output quantization phases of 0°, -60°, -120°, and -180° respectively, and high-passband output quantization phases of -330°, -220°, -110°, and 0° respectively, which is realized by the above method, is given. It can be seen that the two operating frequencies of the dual-frequency phase shifter designed in this embodiment are 2.4 GHz and 3.85 GHz respectively, and the relative bandwidths of the low passband and the high passband are 5.4% and 5.7% respectively.

[0069] like Figure 7 As shown, the phase response simulation result diagram of the dual-frequency phase customizable phase shifter implemented in this embodiment is given, in which the low-frequency output quantization phases are 0°, -60°, -120°, and -180°, and the high-frequency output quantization phases are -330°, -220°, -110°, and 0°, respectively. It can be seen that the phase shift difference achieved between adjacent phase shifters in each passband is flat, which meets the application requirements.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A dual-frequency phase customizable phase shifter based on a coupled resonator structure, characterized in that: It includes a dual-frequency phase shifter structure, which can achieve: for input signals in two specified frequency bands, the amplitude can be passed and the phase can be modulated, and two sets of dual-frequency phase distributions that are independent of each other and do not change with the frequency can be realized in the two specified frequency bands.

2. The dual-frequency phase customizable phase shifter based on a coupled resonator structure according to claim 1, characterized in that: The dual-frequency phase shifter structure includes: an input dual-mode resonance module located at the input position, a low-frequency -45° / 0° / 45° phase control module and a high-frequency -45° / 0° / 45° phase control module arranged side by side and relatively, and a dual-frequency independent 0° / 180° phase control module located at the output position; Each module interacts with each other through the coupling gap, achieving the function that the amplitude at the dual frequency can pass and the phase is configured according to the expected value; The input dual-mode resonance module is a resonator with two resonance modes, generating two resonance modes, mode 1 and mode 2, whose resonance frequencies correspond to low-frequency and high-frequency operating frequencies respectively, thus realizing a bandpass characteristic under dual frequencies; The low-frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the low passband; The high frequency -45° / 0° / 45° phase control module is used to generate a -45° / 0° / 45° phase shift in the high passband; The dual-frequency independent 0° / 180° phase control module, based on the input dual-mode resonance module, utilizes the voltage distribution in two resonance modes and controls the 0° / 180° phase at two frequencies by controlling the feeding position.

3. The dual-frequency phase customizable phase shifter based on a coupled resonator structure according to claim 2, characterized in that: The low-frequency -45° / 0° / 45° phase control module includes a U-shaped single-frequency resonator 1 and an open-circuit configurable branch 1 loaded in the middle of the U-shaped single-frequency resonator 1 and designed according to the expected phase.

4. The dual-frequency phase customizable phase shifter based on a coupled resonator structure according to claim 2, characterized in that: The high-frequency -45° / 0° / 45° phase control module includes a U-shaped single-frequency resonator 2 and an open-circuit configurable branch 2 loaded in the middle of the U-shaped single-frequency resonator 2 and designed according to the expected phase.

5. The dual-frequency phase customizable phase shifter based on coupled resonator structure according to claim 2, characterized in that: The input dual-mode resonance module is an open-circuit branch-loaded step impedance resonator, which generates two resonance modes, mode 1 and mode 2, by designing the impedance value and the electrical length.

6. The dual-frequency phase customizable phase shifter based on coupled resonator structure according to claim 5, characterized in that: The dual-frequency independent 0° / 180° phase control module is designed as follows: based on the input dual-mode resonance module, the voltage distribution under the two resonance modes is utilized to control the 0° / 180° phase at the two frequencies by controlling the feeding position of the signal output port.

7. The dual-frequency phase customizable phase shifter based on coupled resonator structure according to claim 6, characterized in that: The feed positions that can be selected for the signal output port include: Position 1: The voltage distributions of mode 1 and mode 2 are both positive; Position 2: The output voltage of mode 1 is positive, and the voltage distribution of mode 2 is negative; Position 3: The voltage distributions of mode 1 and mode 2 are both negative; Position 4: The output voltage of mode 1 is negative and the output voltage of mode 2 is positive.

8. The dual-frequency phase customizable phase shifter based on coupled resonator structure according to claim 7, characterized in that: When the feeding position of the signal output port is position 1, the reference phase is set to 0° for low frequency and 0° for high frequency; when the signal output port moves from position 1 to position 2, the output voltage direction of mode 1 remains unchanged, and the output voltage of mode 2 is opposite to the voltage fed from position 1, thereby achieving a phase of 0° for low frequency and 180° for high frequency; when the signal output port moves from position 1 to position 3, the output voltage directions of mode 1 and mode 2 are opposite to the voltage fed from position 1, thereby achieving a phase of 180° for low frequency and 180° for high frequency; when the signal output port moves from position 1 to position 4, the output voltage of mode 1 is opposite to the voltage fed from position 1, and the output voltage direction of mode 2 remains unchanged, thereby achieving a phase of 180° for low frequency and 0° for high frequency.

9. The dual-frequency phase customizable phase shifter based on a coupled resonator structure according to claim 3 or 4, characterized in that: The low-frequency -45° / 0° / 45° phase control module or the high-frequency -45° / 0° / 45° phase control module is a branch-loaded half-wavelength resonator that can be freely designed for single-mode / dual-mode under single frequency, specifically including: When there is no branch loading, the U-shaped single-frequency resonator is a half-wavelength resonator with only one resonance mode. The resonance frequency is adjusted by adjusting the electrical length of the U-shaped single-frequency resonator, and the phase value is set as a reference of 0°; When loaded with branches, the U-shaped single-frequency resonator has two resonance modes in the same frequency band, and the phase value is controlled to -45° / 45° by configurable branch length; The operating frequencies of the low-frequency -45° / 0° / 45° phase control module and the high-frequency -45° / 0° / 45° phase control module are respectively close to the operating frequencies of mode 1 and mode 2 of the input dual-mode resonance module to achieve bandpass characteristics.

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