High-and-low-pass network circuit capable of realizing integrated regulation of amplitude and phase, and control method

Abstract

A high-and-low-pass network circuit capable of realizing integrated regulation of an amplitude and a phase, and a control method. The circuit comprises a high-and-low-pass network phase shift unit circuit and amplitude modulation unit sub-circuits, wherein the high-and-low-pass network phase shift unit circuit comprises a high-pass network sub-circuit and a low-pass network sub-circuit, one end of the high-pass network sub-circuit being connected to one end of the low-pass network sub-circuit by means of phase regulation switch transistors M1, M3, and the other end of the high-pass network sub-circuit being connected to the other end of the low-pass network sub-circuit by means of phase regulation switch transistors M2, M4; a body end of M1 and a body end of M2 are respectively connected via amplitude modulation unit sub-circuits, and a body end of M3 and a body end of M4 are respectively connected via amplitude modulation unit sub-circuits; and each amplitude modulation unit sub-circuit comprises an amplitude regulation switch transistor and a resistor which are connected in parallel. Thus, an amplitude and a phase are highly precisely regulated at the same time in the same unit structure.

Description

Amplitude-phase integrated control high- and low-pass network circuit and control method Technical Field

[0001] The present invention relates to the technical field of electronic circuit design, and in particular to an amplitude-phase integrated control high- and low-pass network circuit and a control method. Background Art

[0002] High-precision phase shifting and attenuation circuits are widely used in electronic systems such as phased array systems and broadband electronic countermeasures. Their phase shifting and attenuation accuracy indicators directly affect core performance such as beam scanning accuracy. In large-scale phased array and other transceiver systems, phase shifting and attenuation circuits greatly affect system costs.

[0003] Traditional passive phase shifting and attenuation circuits are usually implemented using high-pass and low-pass networks with MOS switches and resistor networks in cascade. For example, a 6-bit phase shifting and 6-bit attenuation circuit requires 6 phase shifting unit circuits and 6-bit attenuation unit circuits. Then, through parameter optimization, high-precision phase shifting and attenuation characteristics can be achieved in a specific frequency band. However, this method has the following main problems:

[0004] (1) Multiple unit circuits need to be set up and the phase-shift attenuation circuit structure cannot be reused, resulting in a large circuit size, limiting the improvement of circuit integration and increasing link complexity.

[0005] (2) The phase shift and attenuation circuits need to be cascaded in the amplitude-phase control system, which increases the circuit insertion loss and reduces the circuit efficiency.

[0006] (3) There are problems such as poor parasitic characteristics in separate phase shift and attenuation circuits, which require additional circuits to supplement the circuit parasitic effects, resulting in increased circuit complexity.

[0007] In related technologies, patent application publication number CN110854482A proposes a high-frequency switching phase shifter. This solution uses a high-pass direct phase shifter to achieve phase shifting, but lacks amplitude control. Patent application publication number CN112201961A proposes a dual-function metasurface integrated device based on amplitude and phase control. This solution achieves signal control based on polarized wave manipulation, operating at the electromagnetic field level rather than the circuit level.

[0008] Summary of the Invention

[0009] The technical problem to be solved by the present invention is how to provide an amplitude-phase integrated control high- and low-pass network circuit that can realize integrated control of the amplitude and phase of the circuit.

[0010] The present invention solves the above technical problems through the following technical means:

[0011] The present invention proposes an amplitude-phase integrated control high- and low-pass network circuit, the circuit including a high- and low-pass network phase shift unit circuit and an amplitude modulation unit sub-circuit, the high- and low-pass network phase shift unit circuit including a high-pass network sub-circuit and a low-pass network sub-circuit, one end of the high-pass network sub-circuit is connected to one end of the low-pass network sub-circuit via phase control switching tubes M1 and M3, and the other end of the high-pass network sub-circuit is connected to the other end of the low-pass network sub-circuit via phase control switching tubes M2 and M4, the body end of M1 and the body end of M2 are each connected after passing through an amplitude modulation unit sub-circuit, and the body end of M3 and the body end of M4 are each connected after passing through an amplitude modulation unit sub-circuit; each of the amplitude modulation unit sub-circuits includes an amplitude control switching tube and a resistor connected in parallel.

[0012] Furthermore, the high-pass network sub-circuit also includes a capacitor C1, an inductor L1 and a capacitor C1'. The capacitor C1 and the capacitor C1' are connected in series and connected between the drain of the phase control switch tube M1 and the drain of the phase control switch tube M2. One end of the inductor L1 is connected between the capacitor C1 and the capacitor C1', and the other end is grounded.

[0013] Furthermore, the low-pass network sub-circuit also includes an inductor L2, an inductor L2', a capacitor C2, a capacitor C2' and a capacitor C3. The inductor L2 and the inductor L2' are connected in series and then connected between the drain of the phase control switch tube M3 and the drain of the phase control switch tube M4. One end of the capacitor C2 is connected between the drain of the phase control switch tube M3 and the inductor L2, one end of the capacitor C2' is connected between the drain of the phase control switch tube M4 and the inductor L2', one end of the capacitor C3 is connected between the inductor L2 and the inductor L2', and the other ends of the capacitors C2, C2' and C3 are all grounded.

[0014] Furthermore, the source of the phase-regulating switch tube M1 is connected to the source of the phase-regulating switch tube M3 , and the source of the phase-regulating switch tube M2 is connected to the source of the phase-regulating switch tube M4 .

[0015] Furthermore, the resistor is connected in parallel between the source and drain of the amplitude control switch tube, the connection point between the resistor and the source of the amplitude control switch tube is connected to the corresponding phase control switch tube, and the connection point between the resistor and the drain of the amplitude control switch tube is grounded.

[0016] Furthermore, each of the amplitude modulation unit sub-circuits is embedded in the high- and low-pass network phase shift unit circuit using a CMOS process.

[0017] Furthermore, the resistance of the resistor is ≥5KΩ.

[0018] In addition, the present invention also proposes a control method for the amplitude-phase integrated control high- and low-pass network circuit as described above, the method comprising:

[0019] In the phase control state, the phase state is changed by controlling the phase control switch tubes M1, M2, M3 and M4 to achieve high-pass and low-pass switching;

[0020] In the amplitude control state, the amplitude control state is changed by controlling the on and off of the amplitude control switch tube connected to the body end of each phase control switch tube and changing the high and low resistance state of the body end to the ground.

[0021] Furthermore, in the phase control state, the phase state is changed by controlling the phase control switch tubes M1, M2, M3 and M4 to achieve high-pass and low-pass switching, including:

[0022] The control signal Vc is input to the gates of the phase regulating switches M1 and M2, and the control signal Vc is input to the gates of the phase regulating switches M3 and M4. Vc and They are mutually reverse control signals;

[0023] When the Vc signal is high, the phase control switch tubes M1 and M2 are turned on, the phase control switch tubes M3 and M4 are turned off, and the signal is transmitted through the high-pass network;

[0024] When the Vc signal is low, the phase regulating switch tubes M3 and M4 are turned on, and the phase regulating switch tubes M1 and M2 are turned off, and the signal is transmitted through the low-pass network.

[0025] Furthermore, in the amplitude control state, the amplitude control state is changed by controlling the on and off of the amplitude control switch tube connected to the body end of each phase control switch tube to change the high and low resistance state of the body end to ground, including:

[0026] The amplitude control switch connected to the body end of the phase control switch M1 and the amplitude control switch connected to the body end of the phase control switch M3 are input with a signal V1, and the amplitude control switch connected to the body end of the phase control switch M2 and the amplitude control switch connected to the body end of the phase control switch M4 are input with a signal V2;

[0027] When the V1 and V2 signals are both low, the switch tubes M1, M2, M3, and M4 are all in a high resistance state with respect to the ground;

[0028] When the signal of V1 is high and the signal of V2 is low, the body terminal resistance to ground of the switch tubes M1 and M2 is in a low resistance state, and the body terminal resistance to ground of the switch tubes M3 and M4 is in a high resistance state;

[0029] When the V1 and V2 signals are both high, the body-to-ground resistances of the switch tubes M1, M2, M3, and M4 are all in a low resistance state.

[0030] Furthermore, the method further comprises:

[0031] Adjust the parameters of each phase control switch tube and the parameter values ​​of the inductor and capacitor so that the phase difference in the 9-10GHz transmission frequency band remains constant and the amplitude characteristic difference is close to zero;

[0032] Adjust the parameters of the amplitude control switch tubes and resistors in each amplitude modulation unit sub-circuit to achieve constant values ​​of IL2-IL1 and IL3-IL1 in the 9-10 GHz transmission frequency band, and close to zero values ​​of PH2-PH1 and PH3-PH1.

[0033] The advantages of the present invention are:

[0034] (1) The present invention sets a high- and low-pass network phase shift unit circuit and an amplitude modulation unit sub-circuit in the same unit structure, and realizes the regulation of amplitude and phase at the same time. The amplitude modulation unit sub-circuit includes an amplitude regulation switch tube and a resistance element. The amplitude modulation unit sub-circuit is very small in size, which solves the problem that the traditional passive phase shift attenuation circuit cannot be reused.

[0035] (2) The present invention can additionally realize the amplitude control function while keeping the size of the phase shifter unit unchanged.

[0036] (3) In the amplitude control state, the power of the RF signal leakage at the body end of the phase control switch tube is controlled. Since the phase parasitic value caused by changing the resistance state of the body end of the phase control switch tube to the ground is small, the phase parasitic is kept low during the amplitude control process.

[0037] (4) In the phase control state, the phase state is changed by switching between high and low pass through the phase control switch tube, which can achieve precise phase control and lower amplitude parasitic.

[0038] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic structural diagram of an amplitude and phase integrated control high- and low-pass network circuit proposed in one embodiment of the present invention;

[0040] FIG2 is a schematic diagram of the attenuation equivalent principle of an amplitude-phase integrated control high- and low-pass network circuit according to an embodiment of the present invention;

[0041] 3 is a diagram showing the simulation results of the phase shift characteristics of the amplitude and phase integrated control high- and low-pass network circuit according to one embodiment of the present invention;

[0042] 4 is a diagram showing simulation results of attenuation characteristics of a high- and low-pass network circuit with integrated amplitude and phase control according to an embodiment of the present invention;

[0043] FIG5 is a flow chart of a control method for amplitude-phase integrated control of a high- and low-pass network circuit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] As shown in Figure 1, the first embodiment of the present invention discloses an amplitude-phase integrated control high- and low-pass network circuit, which includes: a high- and low-pass network phase shifting unit circuit and an amplitude modulation unit sub-circuit. The high- and low-pass network phase shifting unit circuit includes a high-pass network sub-circuit and a low-pass network sub-circuit. One end of the high-pass network sub-circuit is connected to one end of the low-pass network sub-circuit via phase control switching tubes M1 and M3, and the other end of the high-pass network sub-circuit is connected to the other end of the low-pass network sub-circuit via phase control switching tubes M2 and M4. The body end of M1 and the body end of M2 are each connected after passing through an amplitude modulation unit sub-circuit, and the body end of M3 and the body end of M4 are each connected after passing through an amplitude modulation unit sub-circuit; each of the amplitude modulation unit sub-circuits includes an amplitude control switching tube and a resistor connected in parallel.

[0046] Specifically, in the phase control state, the phase state is changed by controlling the on and off of each phase control switch tube to realize the switching of the high-pass and low-pass network sub-circuits; in the amplitude control state, the amplitude control state is changed by changing the high and low resistance states of the body end to the ground of the amplitude control switch tube connected to the body end of each phase control switch tube; this embodiment realizes high-precision control of amplitude and phase in the same unit structure, solving the problem that traditional passive phase shift attenuation circuits cannot be reused.

[0047] In one embodiment, the high-pass network sub-circuit further includes a capacitor C1, an inductor L1, and a capacitor C1'. The capacitor C1 and the capacitor C1' are connected in series and connected between the drain of the phase control switch tube M1 and the drain of the phase control switch tube M2. One end of the inductor L1 is connected between the capacitor C1 and the capacitor C1', and the other end is grounded.

[0048] Specifically, the body end of the phase control switch tube M1 is connected to the first amplitude modulation unit sub-circuit, and the body end of the phase control switch tube M2 is connected to the second amplitude modulation unit sub-circuit. The first amplitude modulation unit sub-circuit includes an amplitude control switch tube M5 and a ground resistor R1. The second amplitude modulation unit sub-circuit includes an amplitude control switch tube M6 and a ground resistor R2. The ground resistor R1 is connected in parallel between the source and drain of M5. The connection point between the resistor R1 and the source of M5 is connected to the body end of the switch tube M1. The resistor R2 is connected in parallel between the source and drain of M6. The connection point between the resistor R2 and the source of M6 is connected to the body end of the switch tube M2. The connection point between the resistor R1 and the drain of M5 is connected to the connection point between the resistor R2 and the drain of M6 and then grounded.

[0049] In one embodiment, the low-pass network sub-circuit further includes an inductor L2, an inductor L2', a capacitor C2, a capacitor C2', and a capacitor C3. The inductor L2 and the inductor L2' are connected in series and then connected between the drain of the phase control switch tube M3 and the drain of the phase control switch tube M4. One end of the capacitor C2 is connected between the drain of the phase control switch tube M3 and the inductor L2. One end of the capacitor C2' is connected between the drain of the phase control switch tube M4 and the inductor L2'. One end of the capacitor C3 is connected between the inductor L2 and the inductor L2'. The other ends of the capacitors C2, C2', and C3 are all grounded.

[0050] Specifically, the body end of M3 is connected to the third amplitude modulation unit sub-circuit, and the body end of M4 is connected to the fourth amplitude modulation unit sub-circuit. The third amplitude modulation unit sub-circuit includes an amplitude control switch tube M7 and a ground resistor R3. The ground resistor R3 is connected in parallel between the source and drain of M7, and the connection point between the resistor R3 and the source of M7 is connected to the body end of the switch tube M3; the fourth amplitude modulation unit sub-circuit includes an amplitude control switch tube M8 and a ground resistor R4. The resistor R4 is connected in parallel between the source and drain of M7, and the connection point between the resistor R4 and the source of M7 is connected to the body end of the switch tube M4. The connection point between the resistor R7 and the drain of M7 is connected to the connection point between the resistor R4 and the drain of M8 and then grounded.

[0051] In one embodiment, the resistance values ​​of the ground resistors R1 - R4 are all ≥5KΩ.

[0052] It should be noted that in actual applications, the resistance values ​​of R1, R2, R3, and R4 generally need to be set larger (e.g., ≥5KΩ) to achieve attenuation when the M5, M6, M7, and M8 transistors switch between on and off states. In the simulations presented below, the resistance value is set to 10KΩ, achieving attenuation in two 0.5dB steps. However, if the resistance value is set too small, the corresponding attenuation value is also very small. In the extreme case, if the resistance value is 0, the attenuation function cannot be achieved.

[0053] In one embodiment, the source of the phase-regulating switch tube M1 is connected to the source of the phase-regulating switch tube M3 , and the source of the phase-regulating switch tube M2 is connected to the source of the phase-regulating switch tube M4 .

[0054] It should be noted that in the amplitude control state, the power of the RF signal leakage from the body of the phase control switch is regulated. Since the phase parasitics caused by changing the body-to-ground resistance of the phase control switch are small, low phase parasitics are maintained during the amplitude control process. In the phase control state, the phase state is changed by switching the phase control switch between high and low pass, achieving precise phase control and low amplitude parasitics.

[0055] In one embodiment, each of the amplitude modulation unit sub-circuits is embedded in the high- and low-pass network phase shift unit circuit using a CMOS process.

[0056] It should be noted that, under CMOS process conditions, the amplitude control function can be additionally realized while the size of the phase shifter unit remains unchanged.

[0057] Furthermore, as shown in FIG3, the amplitude and phase integrated high and low network circuit proposed in this embodiment can achieve 180° phase shift in the range of 9 to 10 GHz by changing the phase state through the phase control switch tube to achieve high and low pass switching. Specifically: As shown in FIG1, Vc and They are opposite control signals to each other. When the Vc signal is high, the switch tubes M1 and M2 are turned on, and M3 and M4 are turned off. The signal is transmitted through the high-pass network composed of C1, C1', and L1; when the Vc signal is low, the switch tubes M3 and M4 are turned on, and M1 and M2 are turned off, the signal is transmitted through the low-pass network composed of C2, C2', C3, L2, and L2'. The two transmission states have different signal transmission phase and amplitude characteristics.

[0058] As shown in Figure 4, the amplitude and phase integrated control high- and low-pass network circuit designed in this embodiment can achieve 0.5dB and 1dB two-step attenuation control in the range of 9 to 10GHz. The circuit implementation method is as follows: As shown in Figures 1 and 2, when the V1 and V2 signals are both low, the switch tubes M5, M6, M7, and M8 are all in the off state, and the body-end resistance to ground of the switch tubes M1, M2, M3, and M4 is R (R = 5KΩ). The switch tubes M1, M2, M3, and M4 are all in a high resistance state to the ground. At this time, the signal transmission insertion loss is IL1 and the transmission phase is PH1; when the V1 signal is high and the V2 signal is low, the switch tubes M5 and M6 are in the on state, and M7 and M8 are all off. In the on-state, the body-end resistance of the switch tubes M1 and M2 to the ground is R, the small resistance of the parallel switch tubes is in a low resistance state, and the body-end resistance of the switch tubes M3 and M4 to the ground is R, which is a high resistance state. At this time, the signal transmission insertion loss is IL2, and the transmission phase is PH2; when the V1 and V2 signals are both high, the switch tubes M5, M6, M7, and M8 are all in the on-state, and the body-end resistance of the switch tubes M1, M2, M3, and M4 to the ground is R, the small resistance of the parallel switch tubes is in a low resistance state. At this time, the signal transmission insertion loss is IL3, and the transmission phase is PH3.

[0059] In addition, as shown in FIG5 , a second embodiment of the present invention discloses a control method for an amplitude-phase integrated control high- and low-pass network circuit, the method comprising the following steps:

[0060] S10, in the phase control state, by controlling the phase control switch tubes M1, M2, M3 and M4, high-pass and low-pass switching is achieved to change the phase state;

[0061] S20. In the amplitude control state, the amplitude control state is changed by controlling the on and off of the amplitude control switch tube connected to the body end of each phase control switch tube, thereby changing the high and low resistance states of the body end to the ground.

[0062] In one embodiment, step S10: in the phase control state, controlling the phase control switches M1, M2, M3, and M4 to achieve high-pass and low-pass switching to change the phase state includes the following steps:

[0063] The control signal Vc is input to the gates of the phase regulating switches M1 and M2, and the control signal Vc is input to the gates of the phase regulating switches M3 and M4. Vc and They are mutually reverse control signals;

[0064] When the Vc signal is high, the phase control switch tubes M1 and M2 are turned on, the phase control switch tubes M3 and M4 are turned off, and the signal is transmitted through the high-pass network;

[0065] When the Vc signal is low, the phase regulating switch tubes M3 and M4 are turned on, and the phase regulating switch tubes M1 and M2 are turned off, and the signal is transmitted through the low-pass network.

[0066] In one embodiment, step S20: in the amplitude control state, controlling the on / off of the amplitude control switch connected to the body terminal of each phase control switch tube to change the high or low resistance state of the body terminal to ground to achieve the change of the amplitude control state includes the following steps:

[0067] The amplitude control switch connected to the body end of the phase control switch M1 and the amplitude control switch connected to the body end of the phase control switch M3 are input with a signal V1, and the amplitude control switch connected to the body end of the phase control switch M2 and the amplitude control switch connected to the body end of the phase control switch M4 are input with a signal V2;

[0068] When the V1 and V2 signals are both low, the switch tubes M1, M2, M3, and M4 are all in a high resistance state with respect to the ground;

[0069] When the signal of V1 is high and the signal of V2 is low, the body terminal resistance to ground of the switch tubes M1 and M2 is in a low resistance state, and the body terminal resistance to ground of the switch tubes M3 and M4 is in a high resistance state;

[0070] When the V1 and V2 signals are both high, the body-to-ground resistances of the switch tubes M1, M2, M3, and M4 are all in a low resistance state.

[0071] Specifically, when the V1 and V2 signals are both low, the switch tubes M5, M6, M7, and M8 are all in the off state, and the body-to-ground resistance of the switch tubes M1, M2, M3, and M4 is R (R ≥ 5KΩ). The switch tubes M1, M2, M3, and M4 are all in a high resistance state with respect to the body end. At this time, the signal transmission insertion loss is IL1 and the transmission phase is PH1. When the V1 signal is high and the V2 signal is low, the switch tubes M5 and M6 are in the on state, and the M7 and M8 are in the off state. The switch tubes M1 and M2 are The body-to-ground resistance of the switch tubes R1 and R2 is in a low-resistance state, and the body-to-ground resistance of the switch tubes M3 and M4 is in a high-resistance state. At this time, the signal transmission insertion loss is IL2 and the transmission phase is PH2; when the V1 and V2 signals are both high, the switch tubes M5, M6, M7, and M8 are all in the on state, and the body-to-ground resistance of the switch tubes M1, M2, M3, and M4 are all in the corresponding grounding point resistance. The on-state small resistance of the parallel switch tube is in a low-resistance state. At this time, the signal transmission insertion loss is IL3 and the transmission phase is PH3.

[0072] In one embodiment, the method further comprises the following steps:

[0073] Adjust the parameters of each phase control switch tube and the parameter values ​​of the inductor and capacitor so that the phase difference in the 9-10GHz transmission frequency band remains constant and the amplitude characteristic difference is close to zero;

[0074] Adjust the parameters of the amplitude control switch tubes and resistors in each amplitude modulation unit sub-circuit to achieve constant values ​​of IL2-IL1 and IL3-IL1 in the 9-10 GHz transmission frequency band, and close to zero values ​​of PH2-PH1 and PH3-PH1.

[0075] Specifically, this embodiment can achieve a phase difference of 180° within the 9-10 GHz transmission frequency band and an amplitude characteristic difference close to zero by optimizing the switch tubes M1, M2, M3, and M4, and the parameter values ​​of the inductors and capacitors when the gate length of M1, M2, M3, and M4 is 130 nm and the gate width is 72 um, C1 = 400 fF, L1 = 780 pH, C2 = 160 fF, C3 = 320 fF, and L2 = 590 pH.

[0076] By optimizing the parameter values ​​of each ground resistor and the switching tubes M5, M6, M7, and M8, when the gate length of M5, M6, M7, and M8 is 130nm and the gate width is 24um, and R1, R2, R3, and R4 are 10KΩ, IL2-IL1=0.5dB, IL3-IL1=1dB, and PH2-PH1 and PH3-PH1 are close to zero in the range of 9 to 10GHz.

[0077] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0079] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An amplitude and phase integrated control high and low pass network circuit, characterized in that: The circuit includes a high-pass and low-pass network phase shift unit circuit and an amplitude modulation unit sub-circuit. The high-pass and low-pass network phase shift unit circuit includes a high-pass network sub-circuit and a low-pass network sub-circuit. One end of the high-pass network sub-circuit is connected to one end of the low-pass network sub-circuit via phase regulation switch tubes M1 and M3, and the other end of the high-pass network sub-circuit is connected to the other end of the low-pass network sub-circuit via phase regulation switch tubes M2 and M4. The body end of M1 and the body end of M2 are respectively connected after passing through an amplitude modulation unit sub-circuit, and the body end of M3 and the body end of M4 are respectively connected after passing through an amplitude modulation unit sub-circuit; each amplitude modulation unit sub-circuit includes an amplitude regulation switch tube and a resistor connected in parallel.

2. The amplitude and phase integrated control high and low pass network circuit according to claim 1, characterized in that: The high-pass network sub-circuit also includes a capacitor C1, an inductor L1 and a capacitor C1'. The capacitor C1 and the capacitor C1' are connected in series and connected between the drain of the phase control switch tube M1 and the drain of the phase control switch tube M2. One end of the inductor L1 is connected between the capacitor C1 and the capacitor C1', and the other end is grounded.

3. The amplitude and phase integrated control high and low pass network circuit according to claim 1, characterized in that: The low-pass network sub-circuit also includes an inductor L2, an inductor L2', a capacitor C2, a capacitor C2' and a capacitor C3. The inductor L2 and the inductor L2' are connected in series and then connected between the drain of the phase control switch tube M3 and the drain of the phase control switch tube M4. One end of the capacitor C2 is connected between the drain of the phase control switch tube M3 and the inductor L2, one end of the capacitor C2' is connected between the drain of the phase control switch tube M4 and the inductor L2', one end of the capacitor C3 is connected between the inductor L2 and the inductor L2', and the other ends of the capacitors C2, C2' and C3 are all grounded.

4. The amplitude and phase integrated control high and low pass network circuit according to claim 1, characterized in that: The source of the phase regulating switch tube M1 is connected to the source of the phase regulating switch tube M3 , and the source of the phase regulating switch tube M2 is connected to the source of the phase regulating switch tube M4 .

5. The amplitude and phase integrated control high and low pass network circuit according to claim 1, characterized in that: The resistor is connected in parallel between the source and drain of the amplitude control switch tube, the connection point between the resistor and the source of the amplitude control switch tube is connected to the corresponding phase control switch tube, and the connection point between the resistor and the drain of the amplitude control switch tube is grounded.

6. The amplitude and phase integrated control high and low pass network circuit according to claim 1, characterized in that: Each amplitude modulation unit sub-circuit is embedded in the high- and low-pass network phase shift unit circuit using CMOS technology.

7. A control method for the amplitude-phase integrated control high- and low-pass network circuit according to any one of claims 1 to 6, characterized in that: The method comprises: In the phase control state, the phase state is changed by controlling the phase control switch tubes M1, M2, M3 and M4 to achieve high-low pass switching; In the amplitude control state, the amplitude control state is changed by controlling the on and off of the amplitude control switch tube connected to the body end of each phase control switch tube and changing the high and low resistance state of the body end to the ground.

8. The control method of the amplitude and phase integrated control high- and low-pass network circuit according to claim 7, characterized in that: In the phase control state, the phase state is changed by controlling the phase control switch tubes M1, M2, M3 and M4 to achieve high-low pass switching, including: A control signal Vc is input to the gates of the phase regulating switch tubes M1 and M2, and a control signal Vc is input to the gates of the phase regulating switch tubes M3 and M4. Vc and They are reverse control signals to each other; When the Vc signal is high, the phase regulating switch tubes M1 and M2 are turned on, the phase regulating switch tubes M3 and M4 are turned off, and the signal is transmitted through the high-pass network; When the Vc signal is low, the phase regulating switch tubes M3 and M4 are turned on, the phase regulating switch tubes M1 and M2 are turned off, and the signal is transmitted via the low-pass network.

9. The control method of the amplitude and phase integrated control high- and low-pass network circuit according to claim 7, characterized in that: In the amplitude control state, the amplitude control state is changed by controlling the on and off of the amplitude control switch tube connected to the body end of each phase control switch tube to change the high and low resistance state of the body end to the ground, including: The amplitude control switch tube connected to the body end of the phase control switch tube M1 and the amplitude control switch tube connected to the body end of the phase control switch tube M3 are input with a signal V1, and the amplitude control switch tube connected to the body end of the phase control switch tube M2 and the amplitude control switch tube connected to the body end of the phase control switch tube M4 are input with a signal V2; When the V1 and V2 signals are both low, the switch tubes M1, M2, M3, and M4 are all in a high resistance state to the ground; When the signal of V1 is high and the signal of V2 is low, the body terminal resistance to ground of the switch tubes M1 and M2 is in a low resistance state, and the body terminal resistance to ground of the switch tubes M3 and M4 is in a high resistance state; When the V1 and V2 signals are both high, the body-to-ground resistance of the switch tubes M1, M2, M3, and M4 are all in a low resistance state.

10. The control method of the amplitude and phase integrated control high- and low-pass network circuit according to claim 7, characterized in that: The method further comprises: Adjust the parameters of each phase control switch tube and the parameter values ​​of the inductor and capacitor so that the phase difference in the 9-10GHz transmission frequency band remains constant and the amplitude characteristic difference is close to zero; Adjust the parameters of the amplitude control switch tubes and resistors in each amplitude modulation unit sub-circuit to achieve constant values ​​of IL2-IL1 and IL3-IL1 and close to zero PH2-PH1 and PH3-PH1 in the 9-10 GHz transmission frequency band.

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