Switching control circuit and equipment for inductor and local oscillator mixer of communication system

Abstract

The invention relates to the technical field of intelligent control, discloses a switching control circuit and equipment for an inductor and a local oscillator mixer of a communication system, and realizes intelligent switching and control functions of the inductor and the local oscillator mixer in the communication system by taking a mode switching module as a core. A mode switching signal of an input circuit is detected and analyzed through a mode switching module to obtain a to-be-switched target mode, and then corresponding first and second switching control operations are respectively executed on a voltage control oscillation module and a signal conversion processing module according to the target mode. According to the invention, time-sharing switching is carried out on the circuit based on the mode switching signal, so that the pulling effect between the RF-PA and the VCO can be effectively eliminated, and the quality of the transmitted signal can be improved; besides, the intelligent switching of different operation modes realizes the local oscillator in the time-sharing bypass circuit, and is beneficial to reducing the power consumption during the operation in the high-frequency mode or the low-frequency mode to a certain extent.

Description

Technical Field

[0001] The present invention relates to the field of intelligent control technology, and in particular to a switching control circuit and equipment for an inductor and a local oscillator mixer in a communication system. Background Art

[0002] Currently, in the communications field, a single phase-locked loop (PLL) (using the same voltage-controlled oscillator (VCO)) is typically used to generate the IQ local signals (the in-phase and quadrature signals generated by the local oscillator). Furthermore, most PLL circuits integrate an RF power amplifier (RF-PA). In this scenario, the VCO and RF-PA experience pulling interactions. To address this pulling interaction, the following solutions are commonly used in the industry:

[0003] First, a figure-eight inductor is used to reduce the coupling between the PA-balun (the power amplifier's converter) and the VCO-inductor (the inductor used in the voltage-controlled oscillator), thereby reducing the pulling effect between the PA and VCO. However, this approach has limited effectiveness in reducing the pulling effect. To minimize the pulling effect, the VCO-inductor must be placed as far away from the RF-power-amplifier as possible, making it difficult to implement on highly integrated chips. Second, a two-stage LO-mixer (local oscillator-mixer) is used to generate the local oscillator signal, keeping the VCO oscillation frequency away from the PA's transmission frequency (including PA harmonics). While this method can reduce the pulling effect, the presence of only one fixed VCO results in high power consumption when the circuit is in low-frequency mode. Third, a dual PLL is used to generate the local oscillator signal, with digital logic controlling the PLL's operating state. This approach doubles the chip area, limiting chip miniaturization. Therefore, it is crucial to provide a solution to the technical problems of existing technologies, such as the incompatibility of eliminating the pulling effect with device integration and high circuit power consumption. Summary of the Invention

[0004] The present invention provides a switching control circuit and device for an inductor and a local oscillator mixer in a communication system, which can effectively eliminate the pulling effect between an RF-PA and a VCO, improve the quality of the transmitted signal, and help reduce the circuit power consumption in high- and low-frequency operating modes.

[0005] In order to solve the above technical problems, the first aspect of the present invention discloses a switching control circuit for an inductor and a local oscillator mixer in a communication system, wherein the circuit includes a voltage-controlled oscillation module, a mode switching module, and a signal conversion processing module, wherein:

[0006] The first end of the voltage controlled oscillation module is electrically connected to the first end of the signal conversion processing module; the second end of the signal conversion processing module is electrically connected to the first end of the mode switching module; the second end of the voltage controlled oscillation module is electrically connected to the second end of the mode switching module; the third end of the mode switching module is used to receive a low-frequency signal; and the fourth end of the mode switching module is used to receive a high-frequency signal.

[0007] The mode switching module is configured to detect a mode switching signal input to the circuit, analyze the mode switching signal, and obtain a target mode to be switched by the circuit, wherein the target mode includes a high-frequency mode or a low-frequency mode;

[0008] The mode switching module is further configured to perform a first switching control operation on the voltage controlled oscillation module according to the target mode, to obtain a first switching control result corresponding to the voltage controlled oscillation module;

[0009] The mode switching module is further configured to perform a second switching control operation on the signal conversion processing module according to the target mode, and obtain a second switching control result corresponding to the signal conversion processing module.

[0010] As an optional implementation, in the first aspect of the present invention, the circuit further includes a signal mixing module, wherein:

[0011] The fifth end of the voltage controlled oscillation module is electrically connected to the first end of the signal mixing module; the second end of the signal mixing module is electrically connected to the sixth end of the mode switching module; the third end of the signal mixing module is used to receive the high-frequency signal;

[0012] The signal mixing module is configured to receive a mode switching instruction issued by the mode switching module and adjust the on / off state of the signal mixing module according to the mode switching instruction; the on / off state includes a connected state indicating that the signal mixing module is turned on, or a closed state opposite to the connected state;

[0013] The signal mixing module is further configured to perform signal mixing processing on the oscillation signal transmitted by the voltage-controlled oscillation module and the high-frequency signal when the signal mixing module is in the connected state, so as to obtain a mixed signal corresponding to the oscillation signal and the high-frequency signal.

[0014] As an optional implementation, in the first aspect of the present invention, the mode switching module includes a first switching submodule, a second switching submodule, a third switching submodule and a fourth switching submodule, wherein:

[0015] The first end of the first switching submodule is used to receive a preset logic control signal; the second end of the first switching submodule is electrically connected to the second end of the voltage controlled oscillation module; the logic control signal includes a high level signal or a low level signal;

[0016] The first end of the second switching submodule is electrically connected to the second end of the signal conversion processing module; the second end of the second switching submodule is electrically connected to the third end of the voltage controlled oscillation module;

[0017] The first end of the third switching submodule is used to access the logic control signal; the second end of the third switching submodule is electrically connected to the third end of the signal mixing module;

[0018] The first end of the fourth switching submodule is used to access the low-frequency signal; the second end of the fourth switching submodule is electrically connected to the fourth end of the voltage-controlled oscillation module; and the third end of the fourth switching submodule is used to access the logic control signal.

[0019] As an optional implementation, in the first aspect of the present invention, the first switching submodule is configured to detect a mode switching signal input to the circuit, and analyze the mode switching signal to obtain a target mode to be switched to by the circuit;

[0020] The first switching submodule is further configured to generate a first control signal according to the target mode, and perform the first switching control operation on the voltage controlled oscillation module according to the first control signal to obtain a primary operation result corresponding to the voltage controlled oscillation module;

[0021] the fourth switching submodule being configured to, when the target mode is the low-frequency mode, switch the fourth switching submodule to a module-on state according to the logic control signal; and simultaneously generate a second control signal according to the target mode, and perform the first switching control operation on the voltage-controlled oscillation module according to the second control signal, to obtain a secondary operation result corresponding to the voltage-controlled oscillation module;

[0022] The second switching submodule is configured to generate a third control signal according to the target mode, and perform the second switching control operation on the signal conversion processing module according to the third control signal to obtain a third-level operation result corresponding to the signal conversion processing module;

[0023] The third switching submodule is used to switch the fourth switching submodule to the module conduction state according to the logic control signal when the target mode is the high-frequency mode; then generate a fourth control signal according to the target mode, and perform the signal mixing processing on the signal mixing module according to the fourth control signal to obtain a signal mixing processing result corresponding to the signal mixing module.

[0024] As an optional implementation, in the first aspect of the present invention, the voltage controlled oscillator module includes a voltage controlled oscillator and a buffer, wherein:

[0025] The first end of the voltage controlled oscillator is electrically connected to the first end of the signal conversion processing module; the second end of the voltage controlled oscillator is electrically connected to the second end of the first switching submodule; the third end of the voltage controlled oscillator is electrically connected to the first end of the buffer; the second end of the buffer is electrically connected to the first end of the fourth switching submodule; the second end of the buffer is electrically connected to the second end of the signal mixing module; and the second end of the buffer is electrically connected to the second end of the second switching submodule.

[0026] The voltage controlled oscillator is configured to adjust an output signal and an output frequency thereof corresponding to the voltage controlled oscillator according to the target mode;

[0027] The buffer is used to perform signal stabilization processing on the output frequency corresponding to the voltage controlled oscillator.

[0028] As an optional implementation, in the first aspect of the present invention, the voltage controlled oscillator includes a first resonant unit, a modulation and tuning unit, and a second resonant unit, wherein:

[0029] The first end of the first resonant unit is electrically connected to the first end of the signal conversion processing module; the second end of the first resonant unit is electrically connected to the first end of the adjustment and tuning unit; the third end of the first resonant unit is electrically connected to the second end of the first switching submodule;

[0030] The second end of the adjustment and tuning unit is electrically connected to the first end of the second resonance unit; and the second end of the second resonance unit is grounded.

[0031] As an optional embodiment, in the first aspect of the present invention, the first resonance unit is configured to perform a first-level resonance processing on an input signal input to the voltage-controlled oscillation module to obtain a first-level resonance processing result corresponding to the input signal, wherein the first-level resonance processing includes resonant frequency adjustment;

[0032] The modulation and tuning unit is configured to perform a preset modulation and tuning process on the primary resonance process result to obtain a modulation and tuning process result corresponding to the primary resonance process result; the modulation and tuning process includes adjusting the loop current in the voltage-controlled oscillation module, adjusting the capacitance of the variable capacitor, adjusting the gain parameter in the voltage-controlled oscillation module, adjusting the bandwidth parameter in the voltage-controlled oscillation module, and adjusting the inductance path;

[0033] The second resonance unit is configured to perform a secondary resonance process on the modulation and tuning process result to obtain a secondary resonance process result corresponding to the modulation and tuning process result; the secondary resonance process includes the resonance frequency adjustment and current limiting protection;

[0034] The inductive path includes at least two sub-paths, and different sub-paths match different target patterns;

[0035] When the target mode is the high frequency mode, the sub-path matching the high frequency mode is connected, the inductance control subunit in the modulation and tuning unit is switched to a floating state, and the inductance control subunit is switched to a symmetrical magnetic cancellation mode.

[0036] As an optional implementation, in the first aspect of the present invention, the signal conversion processing module includes a filtering submodule, a clock submodule, a frequency detector and a phase detector, and a multi-mode frequency divider, wherein:

[0037] The first end of the filter submodule is electrically connected to the first end of the voltage controlled oscillator module; the second end of the filter submodule is electrically connected to the first end of the clock submodule; and the third end of the filter submodule is grounded.

[0038] The second end of the clock submodule is electrically connected to the first end of the phase frequency detector; the second end of the phase frequency detector is electrically connected to the first end of the multi-mode frequency divider; the third end of the phase frequency detector is electrically connected to the reference signal;

[0039] The second end of the multi-mode frequency divider is electrically connected to the first end of the second switching submodule.

[0040] As an optional implementation, in the first aspect of the present invention, the filtering submodule is configured to perform low-pass filtering on the signal flowing through the filtering submodule;

[0041] The clock submodule is used to provide a reference clock signal for the circuit;

[0042] The phase frequency detector is configured to compare the reference signal with a signal frequency and a signal phase corresponding to a first input signal input to the phase frequency detector, and generate a phase difference signal corresponding to the first input signal;

[0043] The multi-mode frequency divider is used to perform high-frequency signal frequency division processing on a second input signal input into the multi-mode frequency divider to obtain a frequency division processing result corresponding to the second input signal.

[0044] The second aspect of the present invention discloses a switching control device for an inductor and a local oscillator mixer of a communication system. The device includes a device body, and the device includes a switching control device circuit for an inductor and a local oscillator mixer of a communication system as disclosed in the first aspect of the present invention.

[0045] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0046] In an embodiment of the present invention, a switching control circuit and device for an inductor and a local oscillator mixer in a communication system are provided. The circuit includes: a voltage-controlled oscillation module, a mode switching module, and a signal conversion processing module, wherein: a first end of the voltage-controlled oscillation module is electrically connected to a first end of the signal conversion processing module; a second end of the signal conversion processing module is electrically connected to a first end of the mode switching module; a second end of the voltage-controlled oscillation module is electrically connected to a second end of the mode switching module; a third end of the mode switching module is used to access a low-frequency signal; and a fourth end of the mode switching module is used to access a high-frequency signal. The mode switching module is used to detect a mode switching signal of an input circuit and analyze the mode switching signal to obtain a target mode to be switched by the circuit, the target mode including a high-frequency mode or a low-frequency mode. The mode switching module is further used to perform a first switching control operation on the voltage-controlled oscillation module according to the target mode to obtain a first switching control result corresponding to the voltage-controlled oscillation module. The mode switching module is further used to perform a second switching control operation on the signal conversion processing module according to the target mode to obtain a second switching control result corresponding to the signal conversion processing module. It can be seen that the implementation of the present invention, with the mode switching module as the core, realizes the intelligent switching and control function of the inductor and local oscillator mixer in the communication system. The mode switching module intelligently detects the mode switching signal of the input circuit, and thus obtains the current target mode to be switched based on the mode switching signal. Then, according to the target mode, the voltage controlled oscillator module and the signal conversion processing module respectively perform corresponding first switching control operations and second switching control operations. The function of performing time-sharing switching of the circuit based on the mode switching signal can be realized, thereby effectively eliminating the pulling effect between the RF-PA (radio frequency power amplifier) ​​and the VCO (voltage controlled oscillator / voltage controlled oscillator module), thereby facilitating the improvement of the quality of the transmitted signal. In addition, the mode switching module intelligently switches between different operating modes (high frequency mode / low frequency mode) of the circuit in a time-sharing manner, thereby achieving real-time and accurate synchronization of the PLL (VCO) frequency in the circuit. In addition, the intelligent switching between different operating modes realizes the time-sharing bypass of the local oscillator (LO) in the circuit, which is beneficial to reducing power consumption when operating in high frequency mode or low frequency mode to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1This is a schematic structural diagram of a switching control circuit for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention;

[0049] Figure 2 This is a flow chart of another switching control circuit for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention;

[0050] Figure 3 This is a flow chart of another switching control circuit for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention;

[0051] Figure 4 It is a structural diagram of a voltage controlled oscillator disclosed in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of changes in the inductance and quality factor corresponding to a switching control circuit of an inductor and a local oscillator mixer of a communication system disclosed in an embodiment of the present invention after switching to different target modes;

[0053] Figure 6 This is a schematic diagram showing changes in the inductance and its inductive coupling coefficient corresponding to a switching control circuit of an inductor and a local oscillator mixer of a communication system disclosed in an embodiment of the present invention after switching to different target modes;

[0054] Figure 7 The present invention is a schematic structural diagram of a switching control device for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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.

[0056] The terms "first," "second," and so on, in the description and claims of the present invention and the accompanying drawings are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or end comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed therein, or may optionally include other steps or elements inherent to such process, method, product, or end.

[0057] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] The present invention discloses a switching control circuit and device for an inductor and a local oscillator mixer in a communication system. With a mode switching module as its core, the circuit implements intelligent switching and control functions for the inductor and local oscillator mixer in the communication system. The mode switching module intelligently detects a mode switching signal of an input circuit, thereby analyzing the mode switching signal to obtain a target mode to be switched. A corresponding first switching control operation and a second switching control operation are then performed on a voltage-controlled oscillator module and a signal conversion processing module according to the target mode, thereby implementing a function of time-sharing switching of the circuit based on the mode switching signal. This effectively eliminates the pulling effect between an RF-PA (radio frequency power amplifier) ​​and a VCO (voltage-controlled oscillator / voltage-controlled oscillator module), thereby improving the quality of transmitted signals. Furthermore, the mode switching module intelligently switches between different operating modes (high-frequency mode / low-frequency mode) in a time-sharing manner, thereby achieving real-time and accurate synchronization of the PLL (VCO) frequency in the circuit. Furthermore, the intelligent switching between different operating modes enables time-sharing bypassing of the local oscillator (LO) in the circuit, which, to a certain extent, helps reduce power consumption when operating in either the high-frequency or low-frequency mode. The following are detailed descriptions of each.

[0059] Example 1

[0060] See also Figure 1 , Figure 1 This is a schematic diagram of a switching control circuit for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention. Figure 1 The switching control circuit for the communication system inductor and the local oscillator mixer described above can be applied to a switching control device / equipment for the communication system inductor and the local oscillator mixer, and the embodiment of the present invention does not limit this. Figure 1 As shown, the switching control circuit of the inductor and the local oscillator mixer of the communication system may include a voltage controlled oscillation module 101, a mode switching module 102, and a signal conversion processing module 103, wherein:

[0061] A first end of the voltage-controlled oscillation module 101 is electrically connected to a first end of the signal conversion processing module 103; a second end of the signal conversion processing module 103 is electrically connected to a first end of the mode switching module 102; a second end of the voltage-controlled oscillation module 101 is electrically connected to a second end of the mode switching module 102; a third end of the mode switching module 102 is used to receive a low-frequency signal; and a fourth end of the mode switching module 102 is used to receive a high-frequency signal.

[0062] The mode switching module 102 is used to detect a mode switching signal input to the circuit, analyze the mode switching signal, and obtain a target mode to be switched to by the circuit, wherein the target mode includes a high-frequency mode or a low-frequency mode;

[0063] The mode switching module 102 is further configured to perform a first switching control operation on the voltage controlled oscillation module 101 according to the target mode, and obtain a first switching control result corresponding to the voltage controlled oscillation module 101;

[0064] The mode switching module 102 is further configured to perform a second switching control operation on the signal conversion processing module 103 according to the target mode, and obtain a second switching control result corresponding to the signal conversion processing module 103 .

[0065] It can be seen that implementation Figure 1 The switching control circuit for an inductor and a local oscillator mixer in a communication system, with a mode switching module as its core, implements intelligent switching and control functions for the inductor and local oscillator mixer in the communication system. The mode switching module intelligently detects a mode switching signal from an input circuit, thereby analyzing the mode switching signal to determine the current target mode to be switched to. Based on the target mode, the voltage-controlled oscillator module and the signal conversion processing module respectively perform corresponding first and second switching control operations, thereby implementing time-sharing switching of the circuit based on the mode switching signal. This effectively eliminates the pulling effect between the RF-PA (radio frequency power amplifier) ​​and the VCO (voltage-controlled oscillator / voltage-controlled oscillator module), thereby improving the quality of the transmitted signal. Furthermore, the mode switching module intelligently and time-sharingly switches between different operating modes (high-frequency mode / low-frequency mode) of the circuit, achieving real-time and accurate synchronization of the PLL (VCO) frequency in the circuit. Furthermore, the intelligent switching between different operating modes enables time-sharing bypassing of the local oscillator (LO) in the circuit, which to some extent helps reduce power consumption when operating in high-frequency or low-frequency mode.

[0066] In an alternative embodiment, see Figure 2 , Figure 2 is a schematic diagram of a switching control circuit for an inductor and a local oscillator mixer of another communication system disclosed in an embodiment of the present invention; and, Figure 3 , Figure 3 FIG is a structural diagram of another switching control circuit of an inductor and a local oscillator mixer of a communication system disclosed in an embodiment of the present invention; Figure 2 As shown, the circuit further includes a signal mixing module 104, wherein:

[0067] The fifth terminal of the voltage controlled oscillator module 101 is electrically connected to the first terminal of the signal mixing module 104; the second terminal of the signal mixing module 104 is electrically connected to the sixth terminal of the mode switching module 102; the third terminal of the signal mixing module 104 is used to receive the high-frequency signal;

[0068] The signal mixing module 104 is configured to receive the mode switching instruction issued by the mode switching module 102 and adjust the on / off state of the signal mixing module 104 according to the mode switching instruction; the on / off state includes a connected state indicating that the signal mixing module 104 is conducting, or a closed state which is opposite to the connected state;

[0069] The signal mixing module 104 is further configured to perform signal mixing processing on the oscillation signal and the high-frequency signal transmitted by the voltage-controlled oscillation module 101 when the signal mixing module 104 is in a connected state, to obtain a mixed signal corresponding to the oscillation signal and the high-frequency signal.

[0070] In this optional embodiment, optionally, when the mode switching instruction indicates that the target mode to be switched to by the circuit is a high-frequency mode, the on-off state of the signal mixing module is correspondingly switched to a connected state.

[0071] In this optional embodiment, the voltage controlled oscillation module 101 includes Figure 3 The VCO device & BUF two devices; the signal mixing module 104 corresponds to Figure 3 The sixth end of the mode switching module 102 corresponds to Figure 3 logic_en_3 of SW3 input; this high frequency signal corresponds to Figure 3 TX_mode in .

[0072] It can be seen that in this optional embodiment, a signal mixing module is provided for connection in high-frequency mode, and at least one of frequency conversion, signal modulation and signal merging is performed on the signal input into the signal mixing module and the signal of the local oscillator through the signal mixing module; so that the mixed signal output through the signal mixing module can adapt to the signal transmission requirements of different communication systems, thereby improving the applicability of the circuit.

[0073] In another optional embodiment, Figure 2As shown, the mode switching module 102 includes a first switching submodule 1021, a second switching submodule 1022, a third switching submodule 1023 and a fourth switching submodule 1024, wherein:

[0074] The first end of the first switching submodule 1021 is used to receive a preset logic control signal; the second end of the first switching submodule 1021 is electrically connected to the second end of the voltage controlled oscillation module 101; the logic control signal includes a high level signal or a low level signal;

[0075] A first end of the second switching submodule 1022 is electrically connected to a second end of the signal conversion processing module 103 ; a second end of the second switching submodule 1022 is electrically connected to a third end of the voltage controlled oscillation module 101 ;

[0076] The first end of the third switching submodule 1023 is used to access the logic control signal; the second end of the third switching submodule 1023 is electrically connected to the third end of the signal mixing module 104;

[0077] The first end of the fourth switching submodule 1024 is used to access the low-frequency signal; the second end of the fourth switching submodule 1024 is electrically connected to the fourth end of the voltage-controlled oscillation module 101; and the third end of the fourth switching submodule 1024 is used to access the logic control signal.

[0078] In this optional embodiment, the logic control signal connected to the first terminal of the first switching submodule 1021 corresponds to Figure 3 logic_se1_1 in the signal conversion processing module corresponds to Figure 3 DIV3 / DIV4 in the second switching submodule corresponds to Figure 3 The module connected to logic_se1_2 in ( Figure 3 Not marked, please refer to Figure 2 ); The logic control signal connected to the first end of the third switching submodule 1023 corresponds to Figure 3 logic_en_3 in, that is, the third switching submodule 1023 is Figure 3 SW3 in; the fourth switching submodule 1024 corresponds to Figure 3 SW4 in.

[0079] In this optional embodiment, the first switching submodule 1021 is configured to detect a mode switching signal input to the circuit, and analyze the mode switching signal to obtain a target mode to be switched to by the circuit;

[0080] The first switching submodule 1021 is further configured to generate a first control signal according to the target mode, and perform a first switching control operation on the voltage controlled oscillation module 101 according to the first control signal to obtain a primary operation result corresponding to the voltage controlled oscillation module 101;

[0081] a fourth switching submodule 1024 for switching the fourth switching submodule 1024 to a module-on state according to a logic control signal when the target mode is the low-frequency mode; generating a second control signal according to the target mode, and performing a first switching control operation on the voltage-controlled oscillation module 101 according to the second control signal, thereby obtaining a secondary operation result corresponding to the voltage-controlled oscillation module 101;

[0082] The second switching submodule 1022 is configured to generate a third control signal according to the target mode, and perform a second switching control operation on the signal conversion processing module 103 according to the third control signal to obtain a third-level operation result corresponding to the signal conversion processing module 103;

[0083] The third switching submodule 1023 is used to switch the fourth switching submodule 1024 to the module conduction state according to the logic control signal when the target mode is the high-frequency mode; then generate a fourth control signal according to the target mode, and perform signal mixing processing on the signal mixing module 104 according to the fourth control signal to obtain a signal mixing processing result corresponding to the signal mixing module 104.

[0084] In this optional embodiment, it should be noted that when the target mode is detected to be the high-frequency mode, the first switching submodule detects the connected logic control signal, and analyzes the logic control signal to obtain that the target mode to be switched to the circuit is the high-frequency mode, and then switches the voltage-controlled oscillation module to the corresponding state of module conduction / startup / operation / open through the generated first control signal. At this time, the frequency of the voltage-controlled oscillation module is far away from the local oscillator frequency and the harmonics of the local oscillator frequency; at the same time, in the high-frequency mode, the fourth switching submodule switches to the preset invalid-closed state, and the third switching submodule switches to the preset valid-open state; at the same time, the second switching submodule also detects the connected logic control signal, and analyzes the logic control signal to obtain that the target mode to be switched to the circuit is the high-frequency mode, and then switches the signal conversion processing module to the corresponding state of module conduction / startup / operation / open through the generated third control signal.

[0085] Among them, it should be noted that, in actual application, it can be set that when the connected logic control signal is a high-level signal, the high-level signal corresponds to the high-frequency mode; when the connected logic control signal is a low-level signal, the low-level signal corresponds to the low-frequency mode; in special cases, the correspondence between the level signal and the target mode can be opposite, which is adjusted according to the actual application requirements and is not limited in the embodiments of the present invention.

[0086] In this optional embodiment, optionally, the second switching submodule 1022 includes a pre-divider, which includes at least two division modes, and the two division modes may include a 3-division mode or a 4-division mode; wherein, when the second switching submodule 1022 determines that the target mode is a high-frequency mode, the division mode of the pre-divider is switched to a 4-division mode.

[0087] The pre-divider is used to perform frequency division processing on the clock signal input to the second switching submodule 1022 to adjust the frequency of the clock signal.

[0088] In this optional embodiment, by the same token, when it is detected that the target mode is the low-frequency mode, the first switching submodule detects the connected logic control signal, and analyzes the logic control signal to obtain that the target mode to be switched to the circuit is the low-frequency mode, and then switches the voltage-controlled oscillation module to the state corresponding to the module on / start / run / open through the generated first control signal; at the same time, in the low-frequency mode, the fourth switching submodule switches to the preset valid-open state, and the third switching submodule switches to the preset invalid-closed state; at the same time, the second switching submodule also detects the connected logic control signal, and analyzes the logic control signal to obtain that the target mode to be switched to the circuit is the low-frequency mode, and then switches the signal conversion processing module to the state corresponding to the module on / start / run / open through the generated third control signal.

[0089] In this alternative embodiment, see Figure 5 , Figure 5 1 is a schematic diagram showing changes in the inductance and quality factor of a switching control circuit of an inductor and a local oscillator mixer of a communication system disclosed in an embodiment of the present invention after switching to different target modes; Figure 5 As shown, Figure 5 After rotating 90° counterclockwise, the left side is a schematic diagram of the change of the inductance corresponding to the circuit after switching to different target modes, and the right side is a schematic diagram of the change of the quality factor corresponding to the inductance of the circuit after switching to different target modes; Figure 5 The horizontal axis represents the frequency freq in GHz; the vertical axis represents the inductance n and the quality factor S-Param.

[0090] Furthermore, as the horizontal axis increases to the right, Figure 5 In the left / right curves, the curve with a higher vertical axis value represents the inductance / quality factor value when the target mode is high-frequency mode, and the curve with a lower vertical axis value represents the inductance / quality factor value when the target mode is low-frequency mode.

[0091] See also Figure 6 , Figure 6This is a schematic diagram of the changes in the inductance and inductance coupling coefficient of a switching control circuit of an inductor and a local oscillator mixer of a communication system disclosed in an embodiment of the present invention after switching different target modes. Figure 6 As shown, Figure 6 After rotating 90° counterclockwise, Figure 6 The horizontal axis in the middle refers to the frequency freq, the unit is GHz; the vertical axis on the left is the inductive coupling coefficient Mag, the unit is m, and the vertical axis on the right is the inductance n; and Figure 6 The curve changes after switching the target mode Figure 5 similar, Figure 6 The curve with a higher value on the ordinate is the inductive coupling coefficient when the target mode is the high-frequency mode, and the curve with a lower value on the ordinate is the inductive coupling coefficient when the target mode is the low-frequency mode.

[0092] It can be seen that in this optional embodiment, at least 4 sub-switching modules (first, second, third and fourth sub-switching modules) are set up for module state switching control; through these 4 sub-switching modules, independent control of multiple operating modules in the circuit (including voltage-controlled oscillation module, signal conversion processing module and signal mixing module) is realized, so that when the circuit needs to switch to different target modes, each operating module in the circuit can perform independent and accurate state switching, thereby improving the state switching accuracy and flexibility of each operating module in the circuit when switching to different target modes; thereby improving the flexibility of the state switching of the sorting circuit.

[0093] In another optional embodiment, Figure 2 As shown, the voltage controlled oscillator module 101 includes a voltage controlled oscillator 1011 and a buffer 1012, wherein:

[0094] A first end of the voltage controlled oscillator 1011 is electrically connected to a first end of the signal conversion processing module 103; a second end of the voltage controlled oscillator 1011 is electrically connected to a second end of the first switching submodule 1021; a third end of the voltage controlled oscillator 1011 is electrically connected to a first end of the buffer 1012; a second end of the buffer 1012 is electrically connected to a first end of the fourth switching submodule 1024; a second end of the buffer 1012 is electrically connected to a second end of the signal mixing module 104; and a second end of the buffer 1012 is electrically connected to a second end of the second switching submodule 1022.

[0095] The voltage controlled oscillator 1011 is configured to adjust the output signal and the output frequency thereof according to the target mode;

[0096] The buffer 1012 is used to perform signal stabilization processing on the output frequency corresponding to the voltage controlled oscillator 1011 .

[0097] In this optional embodiment, if Figure 3 As shown, the voltage controlled oscillator 1011 corresponds to Figure 3 VCO in; buffer 1012 corresponds to Figure 3 BUF in.

[0098] It can be seen that in this optional embodiment, a voltage-controlled oscillator is set to perform internal adjustment of the output frequency of the input voltage of the input circuit, and the frequency-modulated signal output by the voltage-controlled oscillator is buffered by a buffer. While maintaining the strength and shape of the signal unchanged, interference and distortion in the signal transmission process are eliminated, thereby improving the stability and applicability of the overall circuit.

[0099] In this optional embodiment, optionally, see Figure 3 , Figure 3 Schematic diagram of a voltage controlled oscillator disclosed in an embodiment of the present invention. Figure 3 As shown, the voltage controlled oscillator 1011 includes a first resonant unit 10111, a modulation and tuning unit 10112, and a second resonant unit 10113, wherein:

[0100] A first end of the first resonance unit 10111 is electrically connected to a first end of the signal conversion processing module 103; a second end of the first resonance unit 10111 is electrically connected to a first end of the adjustment tuning unit; a third end of the first resonance unit 10111 is electrically connected to a second end of the first switching submodule 1021;

[0101] The second end of the adjustment and tuning unit is electrically connected to the first end of the second resonance unit 10113; the second end of the second resonance unit 10113 is used for grounding.

[0102] The first resonance unit 10111 is configured to perform a first-level resonance process on the input signal of the input voltage controlled oscillation module 101 to obtain a first-level resonance process result corresponding to the input signal, wherein the first-level resonance process includes a resonance frequency adjustment.

[0103] The modulation and tuning unit 10112 is configured to perform a preset modulation and tuning process on the primary resonance processing result to obtain a modulation and tuning process result corresponding to the primary resonance processing result; the modulation and tuning process includes adjusting the loop current in the voltage controlled oscillation module 101, adjusting the capacitance of the variable capacitor, adjusting the gain parameter in the voltage controlled oscillation module 101, adjusting the bandwidth parameter in the voltage controlled oscillation module 101, and adjusting the inductor path;

[0104] The second resonance unit 10113 is configured to perform a secondary resonance process on the modulation and tuning process result to obtain a secondary resonance process result corresponding to the modulation and tuning process result; the secondary resonance process includes resonance frequency adjustment and current limiting protection;

[0105] The inductive path includes at least two sub-paths, and different sub-paths match different target patterns;

[0106] When the target mode is a high-frequency mode, the sub-path matching the high-frequency mode is connected, and the inductance control sub-unit in the modulation and tuning unit 10112 switches to a floating state. Simultaneously, the inductance control sub-unit switches to a symmetrical magnetic cancellation mode. Optionally, when the target mode is a low-frequency mode, the sub-path matching the low-frequency mode is connected, and the inductance control sub-unit in the modulation and tuning unit 10112 switches to a normal inductance symmetrical mode.

[0107] In this optional embodiment, please refer to Figure 4 ,like Figure 4 As shown, the first resonant unit 10111 may include a first capacitor HRM_C2 and a first inductor HRM_L2; the second resonant unit 10113 may include a second capacitor HRM_C1 and a second inductor HRM_L1; the modulation and tuning unit 10112 may include a first transistor PM1, a second transistor PM2, a first variable capacitor CV1, a second variable capacitor CV1B, a third capacitor CP1, a fourth capacitor CPB1, a third inductor LH1, a fourth inductor LH1B, a fifth LHF1, a sixth LHF1B, a third modulation transistor NM1, a fourth transistor NM2; a first switch SW1, and a second switch SW1B;

[0108] The inductance control subunit may include the third inductor LH1, the fourth inductor LH1B, the fifth LHF1, the sixth LHF1B, the first switch SW1, and the second switch SW1B.

[0109] In this optional embodiment, when the target mode is a high frequency mode, Figure 4 The first switch SW1 in the middle modulation tuning unit 10112 is switched to off and the second switch SW1B is switched to on, so that the inductance control subunit switches to the symmetrical magnetic cancellation mode. At this time, compared with the prior art, the symmetrical magnetic cancellation mode can have a higher pulling suppression ratio; correspondingly, when the target mode is the low-frequency mode, Figure 4 In the mid-modulation tuning unit 10112, the first switch SW1 is switched on and the second switch SW1B is switched off, switching the inductance control subunit to normal inductance symmetry mode. In this low-frequency mode, the power consumption of the local oscillator generator is bypassed, while the power consumption of the VCO is reduced. Furthermore, the first and second switches SW1B can adapt to the chip's integration requirements, reducing the required area for the inductance control subunit / inductor controller.

[0110] It can be seen that in this optional embodiment, a modulation and tuning unit is provided in the actual voltage controlled oscillator. In addition to a series of functions that can be achieved by a conventional voltage controlled oscillator, such as adjusting the loop current, adjusting the capacitance of the variable capacitor, adjusting the gain parameter in the voltage controlled oscillator module, and adjusting the bandwidth parameter in the voltage controlled oscillator module, an inductor path adjustment mechanism is also provided. This inductor path adjustment mechanism can accurately adapt to different target modes and achieve flexible and precise adjustment of the inductor path; thus, the control flexibility and precision of the voltage controlled oscillator are improved; and then, in the high-frequency mode, the voltage controlled oscillator can switch its included inductor control subunit to a floating state, so that the voltage controlled oscillator can be flexibly and accurately adjusted to a symmetrical magnetic cancellation mode, thereby significantly reducing the coupling effect of the inductance in the voltage controlled oscillator. At this time, the voltage controlled oscillator has almost no pulling effect; in the low-frequency mode, although the pulling effect of the voltage controlled oscillator is strong, since the RF-PA does not work in the low-frequency mode, there is no pulling source, and the entire signal mixing module does not work, which is beneficial to reducing the power consumption of the entire circuit.

[0111] In another optional embodiment, Figure 2 As shown, the signal conversion processing module 103 includes a filtering submodule 1031, a clock submodule 1032, a frequency and phase detector 1033, and a multi-mode frequency divider 1034, wherein:

[0112] A first terminal of the filter submodule 1031 is electrically connected to a first terminal of the voltage controlled oscillator module 101 ; a second terminal of the filter submodule 1031 is electrically connected to a first terminal of the clock submodule 1032 ; a third terminal of the filter submodule 1031 is grounded;

[0113] The second end of the clock submodule 1032 is electrically connected to the first end of the frequency detector 1033; the second end of the frequency detector 1033 is electrically connected to the first end of the multi-mode frequency divider 1034; the third end of the frequency detector 1033 is electrically connected to the reference signal;

[0114] The second end of the multi-mode frequency divider 1034 is electrically connected to the first end of the second switching sub-module 1022 .

[0115] In this optional embodiment, the filtering submodule 1031 is configured to perform low-pass filtering on the signal flowing through the filtering submodule 1031;

[0116] The clock submodule 1032 is used to provide a reference clock signal for the circuit;

[0117] The phase frequency detector 1033 is configured to compare a reference signal with a signal frequency and a signal phase corresponding to a first input signal input to the phase frequency detector 1033, and generate a phase difference signal corresponding to the first input signal;

[0118] The multi-mode frequency divider 1034 is configured to perform high-frequency signal frequency division processing on the second input signal input to the multi-mode frequency divider 1034 to obtain a frequency division processing result corresponding to the second input signal.

[0119] In this optional embodiment, if Figure 3 As shown, the filter submodule 1031, the clock submodule 1032, the frequency detector 1033, and the multi-mode divider 1034 correspond to Figure 3 LPF, CP, PFD and MMD in.

[0120] Optionally, the multi-mode frequency divider 1034 adopts a space division multiplexing (SDM) technology when actually used.

[0121] It can be seen that in this optional embodiment, multiple sub-modules are set up through the signal conversion processing module to realize basic functions such as low-pass filtering of signals in the circuit, reference clock signal output, phase difference signal generation, and signal frequency division, thereby improving the integrity and applicability of the overall circuit.

[0122] Example 2

[0123] See also Figure 7 , Figure 7 This is a schematic diagram of a switching control device for an inductor and a local oscillator mixer in a communication system disclosed in an embodiment of the present invention. Figure 7 The switching control device for a communication system inductor and a local oscillator mixer described herein includes a device body, and the switching control device includes the switching control circuit for the communication system inductor and the local oscillator mixer as disclosed in Example 1 of the present invention. It should be noted that for a detailed description of the switching control device for the communication system inductor and the local oscillator mixer, please refer to the detailed description of the relevant content in Example 1, and this embodiment will not be repeated here.

[0124] It can be seen that implementation Figure 7The switching control device for an inductor and a local oscillator mixer in a communication system, with a mode switching module as its core, implements intelligent switching and control functions for the inductor and local oscillator mixer in the communication system. The mode switching module intelligently detects a mode switching signal from an input circuit, thereby analyzing the mode switching signal to determine the current target mode to be switched to. Based on the target mode, the device then performs corresponding first and second switching control operations on the voltage-controlled oscillator module and the signal conversion processing module, respectively. This implements time-sharing switching of the circuit based on the mode switching signal, effectively eliminating the pulling effect between the RF-PA (radio frequency power amplifier) ​​and the VCO (voltage-controlled oscillator / voltage-controlled oscillator module), thereby improving the quality of the transmitted signal. Furthermore, the mode switching module intelligently and time-sharingly switches between different operating modes (high-frequency mode / low-frequency mode) of the circuit, achieving real-time and accurate synchronization of the PLL (VCO) frequency in the circuit. Furthermore, the intelligent switching between different operating modes enables time-sharing bypassing of the local oscillator (LO) in the circuit, which, to a certain extent, helps reduce power consumption when operating in high-frequency or low-frequency mode.

[0125] The device embodiments described above are merely illustrative. Modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0126] Finally, it should be noted that the switching control circuit and device for an inductor and a local oscillator mixer of a communication system disclosed in the embodiment of the present invention disclose only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A switching control circuit for an inductor and a local oscillator mixer in a communication system, characterized in that: The circuit includes a voltage controlled oscillation module, a mode switching module, and a signal conversion processing module, wherein: The first end of the voltage controlled oscillation module is electrically connected to the first end of the signal conversion processing module; the second end of the signal conversion processing module is electrically connected to the first end of the mode switching module; the second end of the voltage controlled oscillation module is electrically connected to the second end of the mode switching module; the third end of the mode switching module is used to access the low frequency signal; the fourth end of the mode switching module is used to access the high frequency signal; The mode switching module is used to detect a mode switching signal input to the circuit, and analyze the mode switching signal to obtain a target mode to be switched by the circuit, wherein the target mode includes a high frequency mode or a low frequency mode; The mode switching module is further configured to perform a first switching control operation on the voltage controlled oscillation module according to the target mode, so as to obtain a first switching control result corresponding to the voltage controlled oscillation module; The mode switching module is further used to perform a second switching control operation on the signal conversion processing module according to the target mode, so as to obtain a second switching control result corresponding to the signal conversion processing module.

2. The switching control method of the inductor and the local oscillator mixer of the communication system according to claim 1, characterized in that: The circuit also includes a signal mixing module, wherein: The fifth end of the voltage controlled oscillation module is electrically connected to the first end of the signal mixing module; the second end of the signal mixing module is electrically connected to the sixth end of the mode switching module; the third end of the signal mixing module is used to access the high-frequency signal; The signal mixing module is used to receive the mode switching instruction sent by the mode switching module, and adjust the on / off state of the signal mixing module according to the mode switching instruction; the on / off state includes a connected state indicating that the signal mixing module is turned on, or a closed state opposite to the connected state; The signal mixing module is further used to perform signal mixing processing on the oscillation signal transmitted by the voltage-controlled oscillation module and the high-frequency signal when the signal mixing module is in the connected state, so as to obtain a mixed signal corresponding to the oscillation signal and the high-frequency signal.

3. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 2, characterized in that: The mode switching module includes a first switching submodule, a second switching submodule, a third switching submodule and a fourth switching submodule, wherein: The first end of the first switching submodule is used to access a preset logic control signal; the second end of the first switching submodule is electrically connected to the second end of the voltage controlled oscillation module; the logic control signal includes a high level signal or a low level signal; The first end of the second switching submodule is electrically connected to the second end of the signal conversion processing module; the second end of the second switching submodule is electrically connected to the third end of the voltage controlled oscillation module; The first end of the third switching submodule is used to access the logic control signal; the second end of the third switching submodule is electrically connected to the third end of the signal mixing module; The first end of the fourth switching submodule is used to access the low-frequency signal; the second end of the fourth switching submodule is electrically connected to the fourth end of the voltage-controlled oscillation module; and the third end of the fourth switching submodule is used to access the logic control signal.

4. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 3, characterized in that: The first switching submodule is used to detect a mode switching signal input to the circuit, and analyze the mode switching signal to obtain a target mode to be switched to by the circuit; The first switching submodule is further configured to generate a first control signal according to the target mode, and perform the first switching control operation on the voltage controlled oscillation module according to the first control signal to obtain a primary operation result corresponding to the voltage controlled oscillation module; The fourth switching submodule is used for switching the fourth switching submodule to a module conduction state according to the logic control signal when the target mode is the low-frequency mode; generating a second control signal according to the target mode, and performing the first switching control operation on the voltage-controlled oscillation module according to the second control signal to obtain a secondary operation result corresponding to the voltage-controlled oscillation module; The second switching submodule is used to generate a third control signal according to the target mode, and perform the second switching control operation on the signal conversion processing module according to the third control signal to obtain a third-level operation result corresponding to the signal conversion processing module; The third switching submodule is used to switch the fourth switching submodule to a module conduction state according to the logic control signal when the target mode is the high frequency mode; Then, a fourth control signal is generated according to the target mode, and the signal mixing process is performed on the signal mixing module according to the fourth control signal to obtain a signal mixing process result corresponding to the signal mixing module.

5. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 3 or 4, characterized in that: The voltage controlled oscillator module includes a voltage controlled oscillator and a buffer, wherein: The first end of the voltage controlled oscillator is electrically connected to the first end of the signal conversion processing module; the second end of the voltage controlled oscillator is electrically connected to the second end of the first switching submodule; the third end of the voltage controlled oscillator is electrically connected to the first end of the buffer; the second end of the buffer is electrically connected to the first end of the fourth switching submodule; the second end of the buffer is electrically connected to the second end of the signal mixing module; the second end of the buffer is electrically connected to the second end of the second switching submodule; The voltage controlled oscillator is used to adjust the output signal and output frequency corresponding to the voltage controlled oscillator according to the target mode; The buffer is used to perform signal stabilization processing on the output frequency corresponding to the voltage controlled oscillator.

6. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 5, characterized in that: The voltage controlled oscillator comprises a first resonance unit, a modulation and tuning unit, and a second resonance unit, wherein: The first end of the first resonance unit is electrically connected to the first end of the signal conversion processing module; the second end of the first resonance unit is electrically connected to the first end of the adjustment and tuning unit; the third end of the first resonance unit is electrically connected to the second end of the first switching submodule; The second end of the adjustment and tuning unit is electrically connected to the first end of the second resonance unit; and the second end of the second resonance unit is used for grounding.

7. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 6, characterized in that: The first resonance unit is used to perform a first-level resonance processing on the input signal input to the voltage-controlled oscillation module to obtain a first-level resonance processing result corresponding to the input signal, wherein the first-level resonance processing includes a resonance frequency adjustment; The modulation and tuning unit is used to perform a preset modulation and tuning process on the primary resonance processing result to obtain a modulation and tuning processing result corresponding to the primary resonance processing result; The modulation and tuning process includes adjusting the loop current in the voltage controlled oscillation module, adjusting the capacitance of the variable capacitor, adjusting the gain parameter in the voltage controlled oscillation module, adjusting the bandwidth parameter in the voltage controlled oscillation module, and adjusting the inductance path; The second resonance unit is used to perform secondary resonance processing on the modulation and tuning processing result to obtain a secondary resonance processing result corresponding to the modulation and tuning processing result; the secondary resonance processing includes the resonance frequency adjustment and current limiting protection; The inductive path includes at least two sub-paths, and different sub-paths match different target modes; When the target mode is the high frequency mode, the sub-path matching the high frequency mode is connected, the inductance control subunit in the modulation and tuning unit is switched to a floating state, and the inductance control subunit is switched to a symmetrical magnetic cancellation mode.

8. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 3 or 4 or 6 or 7, characterized in that: The signal conversion processing module includes a filtering submodule, a clock submodule, a frequency detector and a phase detector, and a multi-mode divider, wherein: The first end of the filter submodule is electrically connected to the first end of the voltage controlled oscillation module; the second end of the filter submodule is electrically connected to the first end of the clock submodule; the third end of the filter submodule is used for grounding; The second end of the clock submodule is electrically connected to the first end of the frequency detector; the second end of the frequency detector is electrically connected to the first end of the multi-mode frequency divider; the third end of the frequency detector is electrically used to access the reference signal; The second end of the multi-mode frequency divider is electrically connected to the first end of the second switching submodule.

9. The switching control circuit of the inductor and the local oscillator mixer of the communication system according to claim 8, characterized in that: The filtering submodule is used to perform low-pass filtering on the signal flowing through the filtering submodule; The clock submodule is used to provide a reference clock signal for the circuit; The phase frequency detector is used to compare the reference signal with a signal frequency and a signal phase corresponding to a first input signal input to the phase frequency detector, and generate a phase difference signal corresponding to the first input signal; The multi-mode frequency divider is used to perform high-frequency signal frequency division processing on a second input signal input to the multi-mode frequency divider to obtain a frequency division processing result corresponding to the second input signal.

10. A switching control device for an inductor and a local oscillator mixer of a communication system, characterized in that: The device comprises a device body, and the device comprises a switching control circuit of an inductor and a local oscillator mixer of a communication system as claimed in any one of claims 1 to 9.

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