Magnetic coupling phase shift / delay circuit

Abstract

The invention discloses a magnetic coupling phase shift / delay circuit, which comprises a radio frequency input end, a radio frequency output end and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input end and the radio frequency output end, the magnetic coupling phase shift / delay unit comprises a first network and a second network, the first network is any one of all-pass, high-pass and low-pass networks, and the second network is any one of all-pass, high-pass and low-pass networks. Through the two groups of coupling inductors of the two networks, the imaginary component in inductance coil parameters is reduced, the frequency response of the inductance coil and the variable capacitance diode is flatter, the two network structures can be arranged in different passband states, complementation of phase and insertion loss is formed, and while low insertion loss and high phase shifting quantity are achieved, the frequency response of the variable capacitance diode is improved. And the phase shift additional amplitude modulation of the circuit is greatly reduced.

Description

Technical Field

[0001] The invention relates to a magnetic coupling phase shift / delay circuit, belonging to the technical field of integrated circuits. Background Art

[0002] Phase shifters are microwave control circuits that can control the phase change of microwave signals. They are divided into digital phase shifters and analog phase shifters according to their phase change characteristics. Analog phase shifters can achieve continuous phase shift and are widely and importantly used in communications, radar systems, phased array antenna systems, instrumentation, and other fields.

[0003] The key indicators of analog phase shifters include phase shift, insertion loss, operating bandwidth, phase shift-added amplitude modulation, phase shift sensitivity, etc. As people's demand for antenna beam control continues to increase, research on high-performance analog phase shifters has become more in-depth, and the requirements for the above indicators have also become higher and higher.

[0004] At present, the research on phase shifters is mainly divided into reflective phase shift circuits and transmission phase shift circuits. Among them, the reflective phase shift circuit can realize broadband phase shift design, but the 3dB coupler it uses is large in area, which is not conducive to integration and increases the circuit cost. The transmission phase shift circuit usually uses high-pass, low-pass, and full-pass network structures (or their combination) to achieve phase change, but it is difficult to take into account low insertion loss, high phase shift, low additional amplitude modulation, wide working bandwidth and other indicators, and it is difficult to meet the needs of higher performance analog phase shifters. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a magnetically coupled phase shift / delay circuit which can realize phase change while taking into account the indicators such as low insertion loss, high phase shift, low additional amplitude modulation, and wide working bandwidth.

[0006] The present invention adopts the following technical solutions to solve the above technical problems:

[0007] A magnetic coupling phase shift / delay circuit, comprising: a radio frequency input end, a radio frequency output end, and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input end and the radio frequency output end;

[0008] The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network;

[0009] The first network includes two inductors connected in series and a plurality of varactor diodes, and the second network includes two inductors connected in series and a plurality of varactor diodes. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one inductor L of the first network is magnetically coupled with one inductor L' of the second network in the same direction, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled with another inductor of the second network in the same direction; the varactor diodes are controlled by an external voltage control signal so that all the varactor diodes are in a reverse bias state, thereby realizing continuous control of the phase.

[0010] As a preferred solution of the present invention, the first network is a first all-pass network, and the second network is a second all-pass network; the first all-pass network includes first to second inductors, first to third varactor diodes and a first resistor; the second all-pass network includes third to fourth inductors, fourth to sixth varactor diodes and a second resistor;

[0011] One end of the first inductor is connected to the RF input or output end, one end of the second inductor is connected to the RF output or input end, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the RF input or output end, the cathode of the second varactor diode is connected to the RF output or input end, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded;

[0012] One end of the third inductor is connected to the RF input or output end, one end of the fourth inductor is connected to the RF output or input end, the other end of the third inductor and the other end of the fourth inductor are respectively connected to the cathode of the sixth varactor diode; the cathode of the fourth varactor diode is connected to the RF input or output end, the cathode of the fifth varactor diode is connected to the RF output or input end, the anode of the fourth varactor diode and the anode of the fifth varactor diode are respectively connected to one end of the second resistor, and the other end of the second resistor and the anode of the sixth varactor diode are both grounded;

[0013] The first inductor and the third inductor are magnetically coupled in the same direction, the second inductor and the fourth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

[0014] As a preferred solution of the present invention, the first network is a first full-pass network, and the second network is a first low-pass network; the first full-pass network includes first to second inductors, first to third varactor diodes and a first resistor; the first low-pass network includes fifth to sixth inductors, and a seventh varactor diode;

[0015] One end of the first inductor is connected to the RF input or output end, one end of the second inductor is connected to the RF output or input end, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the RF input or output end, the cathode of the second varactor diode is connected to the RF output or input end, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded;

[0016] One end of the fifth inductor is connected to the RF input or output end, one end of the sixth inductor is connected to the RF output or input end, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded;

[0017] The first inductor and the fifth inductor are magnetically coupled in the same direction, the second inductor and the sixth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

[0018] As a preferred solution of the present invention, the first network is a first low-pass network, and the second network is a first high-pass network; the first low-pass network includes the fifth and sixth inductors, and the seventh varactor diode; the first high-pass network includes the ninth and tenth inductors, and the ninth and tenth varactor diodes;

[0019] One end of the fifth inductor is connected to the cathode of the tenth varactor diode, one end of the sixth inductor is connected to the RF output or input terminal, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded;

[0020] The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded;

[0021] The fifth inductor and the ninth inductor are magnetically coupled in the same direction, the sixth inductor and the tenth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input end and the RF output end to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

[0022] As a preferred solution of the present invention, the first network is a first full-pass network, and the second network is a first high-pass network; the first full-pass network includes first to second inductors, first to third varactor diodes and a first resistor; the first high-pass network includes ninth to tenth inductors, and ninth to tenth varactor diodes;

[0023] One end of the first inductor is connected to the cathode of the tenth varactor diode, one end of the second inductor is connected to the RF output or input terminal, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the cathode of the tenth varactor diode, the cathode of the second varactor diode is connected to the RF output or input terminal, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded;

[0024] The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded;

[0025] The first inductor and the ninth inductor are magnetically coupled in the same direction, the second inductor and the tenth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input end and the RF output end to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

[0026] As a preferred solution of the present invention, the first network is a first low-pass network, and the second network is a second low-pass network; the first low-pass network includes the fifth to sixth inductors and the seventh varactor; the second low-pass network includes the seventh to eighth inductors and the eighth varactor;

[0027] One end of the fifth inductor is connected to the RF input or output end, one end of the sixth inductor is connected to the RF output or input end, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded;

[0028] One end of the seventh inductor is connected to the RF input or output end, one end of the eighth inductor is connected to the RF output or input end, the other end of the seventh inductor and the other end of the eighth inductor are respectively connected to the cathode of the eighth varactor diode, and the anode of the eighth varactor diode is grounded;

[0029] The fifth inductor and the seventh inductor are magnetically coupled in the same direction, the sixth inductor and the eighth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

[0030] As a preferred solution of the present invention, the first network is a first high-pass network, and the second network is a second high-pass network; the first high-pass network includes ninth to tenth inductors, and ninth to tenth varactor diodes; the second high-pass network includes eleventh to twelfth inductors, and eleventh to twelfth varactor diodes;

[0031] The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded; the cathode of the twelfth varactor diode is connected to the RF output or input terminal, the anode of the twelfth varactor diode and the anode of the eleventh varactor diode are respectively connected to one end of the eleventh inductor, the other end of the eleventh inductor is connected to one end of the tenth inductor, and the other end of the twelfth inductor is grounded; the cathode of the tenth varactor diode and the cathode of the eleventh varactor diode are respectively connected to the voltage control terminal;

[0032] The ninth inductor and the eleventh inductor are magnetically coupled in the same direction, the tenth inductor and the twelfth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input terminal, the RF output terminal and the voltage control terminal to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

[0033] As a preferred solution of the present invention, the circuit elements in the magnetic coupling phase shift / delay circuit are lumped elements or distributed parameter elements.

[0034] A magnetic coupling phase shift / delay circuit, comprising: a radio frequency input end, a radio frequency output end, and N groups of magnetic coupling phase shift / delay units sequentially cascaded between the radio frequency input end and the radio frequency output end, where N is a positive integer greater than or equal to 2;

[0035] The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network;

[0036] The first network includes two inductors connected in series and a plurality of varactor diodes, and the second network includes two inductors connected in series and a plurality of varactor diodes. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one inductor L of the first network is magnetically coupled with one inductor L' of the second network in the same direction, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled with another inductor of the second network in the same direction; the varactor diodes are controlled by an external voltage control signal so that all the varactor diodes are in a reverse bias state, thereby realizing continuous control of the phase.

[0037] A magnetic coupling phase shift / delay circuit, comprising: a radio frequency input end, a radio frequency output end, and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input end and the radio frequency output end;

[0038] The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network;

[0039] The first network includes two inductors connected in series and a plurality of fixed capacitors, and the second network includes two inductors connected in series and a plurality of fixed capacitors. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one of the inductors L of the first network is magnetically coupled in the same direction with one of the inductors L' of the second network, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled in the same direction with another inductor of the second network; the RF signal is input through the RF input end and output from the RF output end, thereby realizing a fixed phase shift / delay function.

[0040] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0041] 1. The present invention reduces the imaginary component in the inductor coil parameters through two sets of coupled inductors in two networks, making the frequency response of the inductor coil and the varactor diode flatter, and the two network structures can be set in different passband states to form a complementary phase and insertion loss. While achieving low insertion loss and high phase shift, the phase shift additional amplitude modulation of the circuit is greatly reduced.

[0042] 2. The components of the magnetically coupled phase shift / delay circuit proposed in the present invention can all be lumped components, thus reducing the area of ​​the overall circuit.

[0043] 3. The coupling inductor in the magnetic coupling phase shift / delay circuit proposed in the present invention is arranged in one of the several extension layers in the semiconductor structure, so as to adjust the coupling coefficient of the magnetic coupling subunit. The coupling coefficient can be changed / adjusted by adjusting the physical distance (coupling distance) between the two mutually coupled inductors.

[0044] 4. The coupling coefficients of the two groups of coupling inductors in the magnetic coupling phase shift / delay circuit proposed by the present invention are the same or different, which increases the flexibility of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 1 is a circuit diagram of a magnetic coupling phase shift / delay circuit embodiment 1 proposed by the present invention;

[0046] Figure 2 is a circuit diagram of embodiment 2 of the present invention;

[0047] Figure 3 So Figure 1 The magnetic coupling phase shift / delay unit is a circuit diagram of a cascade combination of basic units;

[0048] Figure 4 is a circuit diagram of embodiment 3 of the present invention;

[0049] Figure 5 is a circuit diagram of embodiment 4 of the present invention;

[0050] Figure 6 So Figure 5 The magnetic coupling phase shift / delay unit is a circuit diagram of a cascade combination of basic units;

[0051] Figure 7 is a circuit diagram of embodiment 5 of the present invention;

[0052] Figure 8 is a circuit diagram of embodiment 6 of the present invention;

[0053] Fig. 9 and Fig.10 All of them are fixed phase shift / delay circuit diagrams after the varactor diode is replaced with a fixed capacitor;

[0054] Fig.11 yes Figure 1 Full-state phase simulation results of the circuit;

[0055] Fig.12 and Fig.13 They are Figure 1 Simulation results of the circuit's full-state insertion loss and full-state phase shift and additional amplitude modulation. DETAILED DESCRIPTION

[0056] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0057] The present invention proposes a novel magnetic coupling phase shift / delay circuit that takes into account the indicators of low insertion loss, high phase shift, low additional amplitude modulation, wide working bandwidth, etc., comprising: a radio frequency input end, a radio frequency output end, and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input end and the radio frequency output end; the magnetic coupling phase shift / delay unit comprises a first network and a second network, the first network is any one of a first full-pass network, a first high-pass network, and a first low-pass network, and the second network is any one of a second full-pass network, a second high-pass network, and a second low-pass network;

[0058] The first network includes two inductors connected in series and a plurality of varactor diodes, and the second network includes two inductors connected in series and a plurality of varactor diodes. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one inductor L of the first network is magnetically coupled with one inductor L' of the second network in the same direction, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled with another inductor of the second network in the same direction; the varactor diodes are controlled by an external voltage control signal so that all the varactor diodes are in a reverse bias state, thereby realizing continuous control of the phase.

[0059] Example 1

[0060] Embodiment 1 of the novel magnetic coupling phase shift / delay circuit provided by the present invention is as follows Figure 1 As shown, it is realized by combining two upper and lower all-pass network structures, wherein the inductor L1 in the lower all-pass network structure is coupled in the same direction with the inductor L3 in the upper all-pass network structure, and the inductor L2 in the lower all-pass network structure is coupled in the same direction with the inductor L4 in the upper all-pass network structure, and the coupling coefficient is K. R1 and R2 provide DC grounding and RF isolation for the varactor diodes Cvar1, Cvar2 and Cvar4, Cvar5 respectively. RF1 and RF2 are the input and output ports of the RF signal, and their positions can be interchanged. The voltage control signal is input from the RF1 or RF2 port to control the varactor diodes, so that all the varactor diodes are in a reverse bias state, realizing continuous phase control.

[0061] Example 2

[0062] Figure 1 The circuit can be equivalent to embodiment 2, that is, Figure 1 The parallel Cvar1, Cvar2, R1 and Cvar4, Cvar5, R5 in the circuit are combined, such as Figure 2 By adjusting the values ​​of Cvar1 and Cvar2, this structure can be realized with Figure 1 Same effect. At the same time, Figure 2 It can also be used as an embodiment of a combination of an all-pass network and a low-pass network.

[0063] Example 3

[0064] Another embodiment 3 of the novel magnetic coupling phase shift / delay circuit provided by the present invention is as follows Figure 4As shown, it is realized by a combination of a high-pass network and a low-pass network. The high-pass network and the low-pass network achieve mutual compensation through different responses to the phase, and obtain a better phase shifting effect. The high-pass network is composed of varactor diodes Cvar9, Cvar10 and inductors L9 and L10, and the low-pass network is composed of varactor diodes Cvar7 and inductors L5 and L6. Among them, the inductors L5 and L6 in the low-pass network are respectively coupled in the same direction with the inductors L9 and L10 of the high-pass network to form a coupling structure similar to the Marchand balun, and the coupling coefficient is K. RF1 and RF2 are the input and output ports of the RF signal, and their positions can be interchanged. The voltage control signal is input from the RF1 and RF2 ports at the same time to control the varactor diodes, so that all varactor diodes are in a reverse bias state, realizing continuous control of the phase.

[0065] Example 4

[0066] Another embodiment 4 of the novel magnetic coupling phase shift / delay circuit provided by the present invention is as follows Figure 5 As shown, it is realized by a combination of a high-pass network and an all-pass network. The high-pass network and the all-pass network achieve mutual compensation through different responses to the phase, so as to obtain a better phase shifting effect. The high-pass network is composed of varactor diodes Cvar9, Cvar10 and inductors L9 and L10, and the all-pass network is composed of varactor diodes Cvar1, Cvar2, Cvar3 and inductors L1, L2 and resistor R1. Among them, the inductors L1 and L2 in the all-pass network are respectively coupled in the same direction with the inductors L9 and L10 of the high-pass network to form a coupling structure similar to the Marchand balun, and the coupling coefficient is K. RF1 and RF2 are the input and output ports of the RF signal, and their positions can be interchanged. The voltage control signal is input from the RF1 and RF2 ports at the same time to control the varactor diodes, so that all varactor diodes are in a reverse bias state, realizing continuous control of the phase.

[0067] Example 5

[0068] Another embodiment 5 of the novel magnetic coupling phase shift / delay circuit provided by the present invention is as follows Figure 7 As shown in the figure, it is realized by the combination of the upper and lower low-pass networks, and a better phase shifting effect is obtained through the same-direction magnetic coupling of the two inductors. Among them, the inductors L5 and L6 in the lower low-pass network are respectively coupled in the same direction with the inductors L7 and L8 in the upper low-pass network, and the coupling coefficient is K. RF1 and RF2 are the input and output ports of the RF signal, and their positions can be interchanged. The voltage control signal is input from the RF1 or RF2 port to control the varactor diode, so that all the varactor diodes are in a reverse bias state, realizing continuous phase control.

[0069] Example 6

[0070] Another embodiment 6 of the novel magnetic coupling phase shift / delay circuit provided by the present invention is as follows Figure 8 As shown, it is realized by the combination of two high-pass networks on the left and right, and a better phase shift effect is obtained through the same-direction magnetic coupling of the two inductors. Among them, the inductors L9 and L10 in the left high-pass network are respectively coupled in the same direction with the inductors L11 and L12 in the right high-pass network, and the coupling coefficient is K. RF1 and RF2 are the input and output ports of the RF signal, and their positions can be interchanged. The voltage control signal is simultaneously input from the RF1, RF2 and VT (voltage control) ports to control the varactor diodes, so that all varactor diodes are in a reverse bias state, realizing continuous phase control.

[0071] For all the above embodiments, the circuit elements of the novel magnetic coupling phase shift / delay circuit can be lumped elements or distributed parameter elements, which reduces the area of ​​the overall circuit.

[0072] The coupling inductor in the novel magnetic coupling phase shift / delay circuit is arranged in the same layer, that is, arranged in one of the several extension layers in the semiconductor structure, so as to adjust the coupling coefficient K of the magnetic coupling subunit. The coupling coefficient K can be changed / adjusted by adjusting the physical distance (coupling distance) between the two mutually coupled inductors.

[0073] The coupling coefficients K of the two groups of coupling inductors in the novel magnetic coupling phase shift / delay circuit are the same or different, which increases the flexibility of design.

[0074] By taking the magnetically coupled phase shift / delay unit as the basic unit and performing N-level (N is greater than or equal to 2) cascade combinations, a series circuit with a higher phase shift amount can be obtained while still maintaining low insertion loss and additional amplitude modulation. Preferably, each level of the basic unit can be the same or different to compensate for the overall index.

[0075] by Figure 1 The magnetic coupling phase shift / delay unit in the circuit is the basic unit, and N levels (N is greater than or equal to 2) are cascaded to obtain a series circuit with a higher phase shift amount. Figure 3 shown.

[0076] by Figure 5 The magnetic coupling phase shift / delay unit in the circuit is the basic unit, and N levels (N is greater than or equal to 2) are cascaded to obtain a series circuit with a higher phase shift amount. Figure 6 As shown. Equivalently, the novel magnetically coupled phase shift / delay circuit can replace the varactor diode with a fixed capacitor to be used as a fixed phase shift circuit or a digital phase shift circuit. Typical implementations are as follows Fig. 9 and Fig.10 As shown, Fig. 9 Magnetic coupling is performed through the upper and lower phase shift / delay networks to achieve a better phase shift / delay effect. Fig. 9It can also be regarded as a phase shift circuit realized by magnetic coupling between the upper and lower high-pass networks; Fig.10 It is a fixed phase-shift circuit based on a novel magnetically coupled all-pass network.

[0077] Figure 1 The new magnetic coupling analog phase shift / delay circuit shown in the figure can achieve a continuous phase shift range of more than 130° within a 40% bandwidth (±20%) with f0 as the center frequency. The simulation results are shown in Fig.11 shown.

[0078] Fig.12 and Fig.13 They are the simulation results of the full-state insertion loss and full-state phase-shift additional amplitude modulation corresponding to the circuit. The results show that while the circuit achieves a high phase shift, the insertion loss is only about 1dB, and the phase-shift additional amplitude modulation is basically within 0.3dB, demonstrating excellent analog phase shifter performance.

[0079] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A magnetically coupled phase shift / delay circuit, characterized in that: include: A radio frequency input terminal, a radio frequency output terminal, and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input terminal and the radio frequency output terminal; The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network; The first network includes two inductors connected in series and a plurality of varactor diodes, and the second network includes two inductors connected in series and a plurality of varactor diodes. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one inductor L of the first network is magnetically coupled with one inductor L' of the second network in the same direction, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled with another inductor of the second network in the same direction; the varactor diodes are controlled by an external voltage control signal so that all the varactor diodes are in a reverse bias state, thereby realizing continuous control of the phase.

2. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first all-pass network, and the second network is a second all-pass network; the first all-pass network includes first to second inductors, first to third varactor diodes, and a first resistor; the second all-pass network includes third to fourth inductors, fourth to sixth varactor diodes, and a second resistor; One end of the first inductor is connected to the RF input or output end, one end of the second inductor is connected to the RF output or input end, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the RF input or output end, the cathode of the second varactor diode is connected to the RF output or input end, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded; One end of the third inductor is connected to the RF input or output end, one end of the fourth inductor is connected to the RF output or input end, the other end of the third inductor and the other end of the fourth inductor are respectively connected to the cathode of the sixth varactor diode; the cathode of the fourth varactor diode is connected to the RF input or output end, the cathode of the fifth varactor diode is connected to the RF output or input end, the anode of the fourth varactor diode and the anode of the fifth varactor diode are respectively connected to one end of the second resistor, and the other end of the second resistor and the anode of the sixth varactor diode are both grounded; The first inductor and the third inductor are magnetically coupled in the same direction, the second inductor and the fourth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

3. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first full-pass network, and the second network is a first low-pass network; the first full-pass network includes first to second inductors, first to third varactor diodes, and a first resistor; the first low-pass network includes fifth to sixth inductors, and a seventh varactor diode; One end of the first inductor is connected to the RF input or output end, one end of the second inductor is connected to the RF output or input end, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the RF input or output end, the cathode of the second varactor diode is connected to the RF output or input end, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded; One end of the fifth inductor is connected to the RF input or output end, one end of the sixth inductor is connected to the RF output or input end, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded; The first inductor and the fifth inductor are magnetically coupled in the same direction, the second inductor and the sixth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

4. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first low-pass network, and the second network is a first high-pass network; the first low-pass network includes the fifth and sixth inductors, and the seventh varactor diode; the first high-pass network includes the ninth and tenth inductors, and the ninth and tenth varactor diodes; One end of the fifth inductor is connected to the cathode of the tenth varactor diode, one end of the sixth inductor is connected to the RF output or input terminal, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded; The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded; The fifth inductor and the ninth inductor are magnetically coupled in the same direction, the sixth inductor and the tenth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input end and the RF output end to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

5. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first full-pass network, and the second network is a first high-pass network; the first full-pass network includes first to second inductors, first to third varactor diodes, and a first resistor; the first high-pass network includes ninth to tenth inductors, and ninth to tenth varactor diodes; One end of the first inductor is connected to the cathode of the tenth varactor diode, one end of the second inductor is connected to the RF output or input terminal, the other end of the first inductor and the other end of the second inductor are respectively connected to the cathode of the third varactor diode; the cathode of the first varactor diode is connected to the cathode of the tenth varactor diode, the cathode of the second varactor diode is connected to the RF output or input terminal, the anode of the first varactor diode and the anode of the second varactor diode are respectively connected to one end of the first resistor, and the other end of the first resistor and the anode of the third varactor diode are both grounded; The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded; The first inductor and the ninth inductor are magnetically coupled in the same direction, the second inductor and the tenth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input end and the RF output end to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

6. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first low-pass network, and the second network is a second low-pass network; the first low-pass network includes the fifth to sixth inductors and the seventh varactor diode; the second low-pass network includes the seventh to eighth inductors and the eighth varactor diode; One end of the fifth inductor is connected to the RF input or output end, one end of the sixth inductor is connected to the RF output or input end, the other end of the fifth inductor and the other end of the sixth inductor are respectively connected to the cathode of the seventh varactor diode, and the anode of the seventh varactor diode is grounded; One end of the seventh inductor is connected to the RF input or output end, one end of the eighth inductor is connected to the RF output or input end, the other end of the seventh inductor and the other end of the eighth inductor are respectively connected to the cathode of the eighth varactor diode, and the anode of the eighth varactor diode is grounded; The fifth inductor and the seventh inductor are magnetically coupled in the same direction, the sixth inductor and the eighth inductor are magnetically coupled in the same direction, and an external voltage control signal is input from the RF input terminal to control all the varactor diodes, so that all the varactor diodes are in a reverse bias state, thereby realizing continuous phase control.

7. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The first network is a first high-pass network, and the second network is a second high-pass network; the first high-pass network includes ninth and tenth inductors, and ninth and tenth varactor diodes; the second high-pass network includes eleventh and twelfth inductors, and eleventh and twelfth varactor diodes; The cathode of the ninth varactor diode is connected to the RF input or output terminal, the anode of the ninth varactor diode and the anode of the tenth varactor diode are respectively connected to one end of the ninth inductor, the other end of the ninth inductor is connected to one end of the tenth inductor, and the other end of the tenth inductor is grounded; the cathode of the twelfth varactor diode is connected to the RF output or input terminal, the anode of the twelfth varactor diode and the anode of the eleventh varactor diode are respectively connected to one end of the eleventh inductor, the other end of the eleventh inductor is connected to one end of the tenth inductor, and the other end of the twelfth inductor is grounded; the cathode of the tenth varactor diode and the cathode of the eleventh varactor diode are respectively connected to the voltage control terminal; The ninth inductor and the eleventh inductor are magnetically coupled in the same direction, the tenth inductor and the twelfth inductor are magnetically coupled in the same direction, and an external voltage control signal is simultaneously input from the RF input terminal, the RF output terminal and the voltage control terminal to control all the varactors, so that all the varactors are in a reverse biased state, thereby realizing continuous phase control.

8. The magnetically coupled phase shift / delay circuit according to claim 1, characterized in that: The circuit elements in the magnetic coupling phase shift / delay circuit are lumped elements or distributed parameter elements.

9. A magnetically coupled phase shift / delay circuit, characterized in that: include: A radio frequency input terminal, a radio frequency output terminal, and N groups of magnetically coupled phase shifting / delaying units sequentially cascaded between the radio frequency input terminal and the radio frequency output terminal, where N is a positive integer greater than or equal to 2; The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network; The first network includes two inductors connected in series and a plurality of varactor diodes, and the second network includes two inductors connected in series and a plurality of varactor diodes. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one inductor L of the first network is magnetically coupled with one inductor L' of the second network in the same direction, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled with another inductor of the second network in the same direction; the varactor diodes are controlled by an external voltage control signal so that all the varactor diodes are in a reverse bias state, thereby realizing continuous control of the phase.

10. A magnetically coupled phase shift / delay circuit, characterized in that: include: A radio frequency input terminal, a radio frequency output terminal, and a magnetic coupling phase shift / delay unit connected in series between the radio frequency input terminal and the radio frequency output terminal; The magnetically coupled phase shift / delay unit comprises a first network and a second network, wherein the first network is any one of a first all-pass network, a first high-pass network and a first low-pass network, and the second network is any one of a second all-pass network, a second high-pass network and a second low-pass network; The first network includes two inductors connected in series and a plurality of fixed capacitors, and the second network includes two inductors connected in series and a plurality of fixed capacitors. The two inductors connected in series in the first network are connected in parallel with the two inductors connected in series in the second network, and one of the inductors L of the first network is magnetically coupled in the same direction with one of the inductors L' of the second network, L and L' are arranged opposite to each other, and another inductor of the first network is magnetically coupled in the same direction with another inductor of the second network; the RF signal is input through the RF input end and output from the RF output end, thereby realizing a fixed phase shift / delay function.

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