Characteristic impedance test method, device, equipment and medium

Abstract

The invention provides a characteristic impedance testing method, device and equipment and a medium, and relates to the technical field of radio frequency, the characteristic impedance testing method is used for testing to obtain a characteristic impedance value of a cable, the cable is provided with an input end and an output end, and the input end of the cable is used for accessing a radio frequency signal. The characteristic impedance test method comprises the steps of controlling an input end of a cable to access a radio frequency signal, controlling an output end of the cable to be grounded, obtaining a first voltage value and a first current value of the output end of the cable, and obtaining a first impedance value according to the first voltage value and the first current value; controlling the input end of the cable to access a radio frequency signal, controlling the output end of the cable to open, obtaining a second voltage value and a second current value of the output end of the cable, and obtaining a second impedance value according to the second voltage value and the second current value; and determining a characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value. According to the invention, the characteristic impedance value of the cable can be tested.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to a characteristic impedance testing method, device, equipment and medium. Background Art

[0002] At present, with the development of radio frequency technology, radio frequency technology has begun to be applied in many fields. Taking radio frequency power supply as an example, radio frequency signals can be output to various loads through transmission media to provide electrical energy to the loads. When using cables as transmission media pairs, in order to achieve impedance matching during the output of radio frequency signals, that is, to achieve impedance matching between radio frequency power supply, cable and load, it is necessary to obtain the characteristic impedance value of the cable. Therefore, how to test and obtain the characteristic impedance value of the cable for impedance matching has become a problem that needs to be considered. Summary of the invention

[0003] The present application provides a characteristic impedance testing method, device, equipment and medium, which can test and obtain the characteristic impedance value of a cable.

[0004] In a first aspect, a characteristic impedance testing method is provided, wherein the characteristic impedance testing method is used to test and obtain the characteristic impedance value of a cable, wherein the cable has an input end and an output end, and the input end of the cable is used to access a radio frequency signal. The characteristic impedance testing method comprises: controlling the input end of the cable to access a radio frequency signal, and controlling the output end of the cable to be grounded, obtaining a first voltage value and a first current value at the output end of the cable, and obtaining a first impedance value according to the first voltage value and the first current value; controlling the input end of the cable to access a radio frequency signal, and controlling the output end of the cable to be open-circuited, obtaining a second voltage value and a second current value at the output end of the cable, and obtaining a second impedance value according to the second voltage value and the second current value; and determining the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value.

[0005] In a possible implementation, determining the characteristic impedance value of the cable according to the first impedance modulus and the second impedance modulus includes: obtaining a first operation value according to the first impedance modulus and the second impedance modulus; and determining the characteristic impedance value of the cable according to the first operation value.

[0006] In a possible implementation, obtaining the first operation value according to the first impedance modulus value and the second impedance modulus value includes: performing a multiplication operation on the first impedance modulus value and the second impedance modulus value to obtain the first operation value. Determining the characteristic impedance value of the cable according to the first operation value includes: performing a square root operation on the first operation value to obtain the characteristic impedance value of the cable.

[0007] In a possible implementation manner, the conduction length of the radio frequency signal in the cable is a first length, and the phase parameter of the radio frequency signal in the cable is a first phase parameter. The first impedance modulus is the product of the characteristic impedance value of the cable and a first intermediate value, and the second impedance modulus is the quotient of the characteristic impedance value of the cable and the first intermediate value, wherein the first intermediate value is the tangent value of the product of the first length and the first phase parameter.

[0008] In a possible implementation, the input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is grounded, a first voltage value and a first current value of the output end of the cable are obtained, and a first impedance value is obtained according to the first voltage value and the first current value, including: the input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is connected to the ground so that the output end of the cable is grounded, the first voltage value and the first current value of the output end of the cable are obtained, and the first voltage value and the first current value are multiplied to obtain the first impedance value.

[0009] In a possible implementation, the input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is controlled to be open-circuited, a second voltage value and a second current value of the output end of the cable are obtained, and a second impedance value is obtained according to the second voltage value and the second current value, including: the input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is disconnected from the ground so that the output end of the cable is open-circuited, the second voltage value and the second current value of the output end of the cable are obtained, and the second voltage value and the second current value are multiplied to obtain the second impedance value.

[0010] In a possible implementation, after determining the characteristic impedance value of the cable according to the first impedance modulus and the second impedance modulus, the characteristic impedance testing method further includes: controlling the output end of the cable to be connected to a load, and controlling the input end of the cable to access a radio frequency signal so as to transmit the accessed radio frequency signal to the load through the cable.

[0011] In a second aspect, a characteristic impedance testing device is also provided, and the characteristic impedance testing device adopts the above-mentioned characteristic impedance testing method to test and obtain the characteristic impedance value of the cable. Wherein, the characteristic impedance testing device includes a control unit and an acquisition unit. The control unit is used to control the input end of the cable to access the radio frequency signal, control the output end of the cable to be grounded, and control the output end of the cable to be open-circuited. The acquisition unit is used to obtain a first voltage value and a first current value of the output end of the cable when the output end of the cable is grounded, and to obtain a second voltage value and a second current value of the output end of the cable when the output end of the cable is open-circuited. Wherein, the control unit is also used to obtain a first impedance value according to the first voltage value and the first current value, and to obtain a second impedance value according to the second voltage value and the second current value, and to determine the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value.

[0012] In a third aspect, a radio frequency power supply device is also provided, wherein the radio frequency power supply device comprises a radio frequency power supply, a cable and the above-mentioned characteristic impedance testing device.

[0013] In a fourth aspect, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer-readable storage medium. When the computer program is run on a computer or a processor, the above-mentioned characteristic impedance testing method is implemented.

[0014] The characteristic impedance testing method, device, equipment and medium of the present application can obtain a first voltage value and a first current value of the output end of the cable when it is grounded and a second voltage value and a second current value of the output end of the cable when it is open-circuited by controlling the output end of the cable to be grounded and open-circuited in sequence when the input end of the control cable is connected to a radio frequency signal, and then can obtain a first impedance value according to the first voltage value and the first current value, and obtain a second impedance value according to the second voltage value and the second current value, so that the characteristic impedance value of the cable can be quickly determined based on the first impedance modulus value and the second impedance modulus value, so as to test and obtain the characteristic impedance value of the cable, and facilitate impedance matching. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0016] Figure 1 Flow chart of a characteristic impedance testing method in one embodiment of the present application.

[0017] Figure 2 for Figure 1 A sub-flowchart of step S100 in FIG.

[0018] Figure 3 for Figure 2 A sub-flowchart of steps S310 and S320 in FIG.

[0019] Figure 4 This is a flow chart of a characteristic impedance testing method in another embodiment of the present application.

[0020] Figure 5 Schematic diagram of a characteristic impedance testing device in one embodiment of the present application.

[0021] Figure 6 It is a block diagram of a radio frequency power supply device in one embodiment of the present application.

[0022] Explanation of the accompanying drawings: 1000, RF power supply equipment, RF, RF power supply, RFS, RF signal, CC, cable, In, input end, Out, output end, 10, characteristic impedance testing device, 100, control unit, 200, acquisition unit, V1, first voltage value, I1, first current value, V2, second voltage value, I2, second current value, 300, switching unit, GND, ground, RL, load. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the features used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0027] In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0028] See also Figure 1 , Figure 1 The flowchart of the characteristic impedance test method in one embodiment of the present application is provided. The present application provides a characteristic impedance test method, which is used to test and obtain the characteristic impedance value of a cable. The cable has an input end and an output end, and the input end of the cable is used to access a radio frequency signal. Figure 1 As shown, the characteristic impedance test method includes:

[0029] Step S100: Control the input end of the cable to access the RF signal, control the output end of the cable to be grounded, obtain a first voltage value and a first current value of the output end of the cable, and obtain a first impedance value according to the first voltage value and the first current value.

[0030] The output end of the cable is controlled to be grounded, that is, the impedance of the output end of the cable is controlled to be zero, and the output end of the cable can also be controlled to be connected to a short-circuiter.

[0031] Step S200: Control the input end of the cable to access the RF signal, and control the output end of the cable to be open, obtain the second voltage value and the second current value of the output end of the cable, and obtain the second impedance value according to the second voltage value and the second current value.

[0032] The output end of the control cable is open-circuited, which may refer to leaving the output end of the cable suspended, that is, the output end of the cable is not connected to any other component or ground, or the output end of the control cable may be connected to an opener.

[0033] Step S300: determining a characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value.

[0034] Therefore, the above-mentioned characteristic impedance testing method in the present application, when the input end of the control cable is connected to the RF signal, can obtain the first voltage value and the first current value of the output end of the cable when it is grounded and the second voltage value and the second current value of the output end of the cable when it is open by controlling the output end of the cable to be grounded and open in sequence, and then can obtain the first impedance value according to the first voltage value and the first current value, and obtain the second impedance value according to the second voltage value and the second current value, so that the characteristic impedance value of the cable can be quickly determined based on the first impedance modulus value and the second impedance modulus value, so as to test and obtain the characteristic impedance value of the cable, so as to facilitate impedance matching.

[0035] In one or more embodiments, the cable of the present application may be a coaxial cable.

[0036] Please also read Figure 2 , Figure 2 for Figure 1 A sub-flow chart of step S100 in FIG. Figure 1 , Figure 2 As shown, step S300: determining the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value may specifically include:

[0037] Step S310: Obtain a first calculation value according to the first impedance modulus value and the second impedance modulus value.

[0038] Step S320: determining the characteristic impedance value of the cable according to the first operation value.

[0039] Therefore, the above-mentioned characteristic impedance testing method in the present application can first directly obtain the first operation value according to the first impedance modulus and the second impedance modulus, and the first operation value is related to the characteristic impedance value of the cable. Then, the characteristic impedance value of the cable can be quickly determined according to the first operation value related to the characteristic impedance value of the cable.

[0040] Please also read Figure 3 , Figure 3 for Figure 2 A sub-flow chart of step S310 and step S320 in FIG. Figure 2 , Figure 3 As shown, step S310: obtaining a first operation value according to the first impedance modulus value and the second impedance modulus value may specifically include:

[0041] Step S311: performing a multiplication operation on the first impedance modulus value and the second impedance modulus value to obtain a first operation value.

[0042] like Figure 2 , Figure 3 As shown, step S320: determining the characteristic impedance value of the cable according to the first operation value may specifically include:

[0043] Step S321: performing a square root operation on the first operation value to obtain a characteristic impedance value of the cable.

[0044] Therefore, the above-mentioned characteristic impedance testing method in the present application can obtain the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value by only performing two operations of multiplication and square root in sequence, which has high calculation efficiency and saves computing power.

[0045] In one or more embodiments, the conduction length of the radio frequency signal in the cable is a first length, and the phase parameter of the radio frequency signal in the cable is a first phase parameter, wherein the first impedance modulus is the product of the characteristic impedance value of the cable and the first intermediate value, and the second impedance modulus is the quotient of the characteristic impedance value of the cable and the first intermediate value, wherein the first intermediate value is the tangent value of the product of the first length and the first phase parameter.

[0046] The phase parameter may be a phase constant, and the first phase parameter corresponds to the first phase constant, that is, a physical quantity that describes the phase change of the radio frequency signal when it propagates in the cable.

[0047] Therefore, the above-mentioned characteristic impedance testing method in the present application can directly calculate the first impedance value and the second impedance value through the voltage value and the current value at the output end of the cable when the output end of the cable is grounded and open-circuited, and then according to the different relationships corresponding to the characteristic impedance values ​​of the cable when the output end of the cable is grounded and open-circuited, the characteristic impedance value of the cable can be determined without obtaining the conduction length of the RF signal in the cable and the phase parameters of the RF signal in the cable, thereby avoiding the complicated steps required to test and obtain the first length and the first phase parameter.

[0048] Furthermore, the first operation value obtained by multiplying the first impedance modulus value and the second impedance modulus value is the square of the characteristic impedance value of the cable. Therefore, performing a square root operation on the first operation value can obtain the characteristic impedance value of the cable.

[0049] Please also read Figure 4 , Figure 4 FIG. 1 is a flow chart of a characteristic impedance testing method in another embodiment of the present application. Figure 1 , Figure 4 As shown, step S100: controlling the input end of the cable to access the RF signal, and controlling the output end of the cable to be grounded, obtaining a first voltage value and a first current value of the output end of the cable, and obtaining a first impedance value according to the first voltage value and the first current value, may specifically include:

[0050] Step S110: Control the input end of the cable to access the RF signal, and control the output end of the cable to be connected to the ground so that the output end of the cable is grounded, obtain a first voltage value and a first current value of the output end of the cable, and multiply the first voltage value and the first current value to obtain a first impedance value.

[0051] like Figure 1 , Figure 4 As shown, step S200: controlling the input end of the cable to access the RF signal, and controlling the output end of the cable to be open, obtaining a second voltage value and a second current value at the output end of the cable, and obtaining a second impedance value according to the second voltage value and the second current value, may specifically include:

[0052] Step S210: Control the input end of the cable to access the RF signal, and control the output end of the cable to be disconnected from the ground so that the output end of the cable is open-circuited, obtain the second voltage value and the second current value of the output end of the cable, and multiply the second voltage value and the second current value to obtain a second impedance value.

[0053] Therefore, the above-mentioned characteristic impedance testing method in the present application realizes grounding of the output end of the cable by controlling the output end of the cable to be connected to the ground, and realizes open circuit of the output end of the cable by controlling the output end of the cable to be disconnected from the ground, and the first impedance value is the product of the first voltage value and the first current value, and the second impedance value is also the product of the second voltage value and the second current value.

[0054] In one or more embodiments, the first voltage value, the first current value, the second voltage value, the second current value, the first impedance value, the second impedance value, and the characteristic impedance value of the cable are all scalars.

[0055] like Figure 4 As shown, after step S300: determining the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value, the characteristic impedance testing method may further include:

[0056] Step S400: controlling the output end of the cable to be connected to the load, and controlling the input end of the cable to be connected to the radio frequency signal, so as to transmit the connected radio frequency signal to the load through the cable.

[0057] Therefore, the above-mentioned characteristic impedance testing method in the present application, after obtaining the characteristic impedance value of the cable through testing, controls the output end of the cable to be connected to the load so as to transmit the radio frequency signal connected to the input end of the cable to the load through the cable, thereby using the cable as the transmission medium to realize the supply of electrical energy to the load.

[0058] In one or more embodiments, the single-pole multi-throw switch can be controlled to be connected to the ground, disconnected, or connected to the load, so that the output end of the cable is grounded, open, or connected to the load accordingly. The output end of the cable can also be controlled to be grounded, switched, or connected to the load in other ways, but the present application is not limited to this.

[0059] in, Figure 4 The step S300 shown can refer to the aforementioned Figure 1 The relevant introduction in will not be repeated here.

[0060] The characteristic impedance testing method of the present application, through the above steps, does not need to obtain other parameters, and only needs to obtain the first voltage value and the first current value of the output end of the cable when it is grounded and the second voltage value and the second current value of the output end of the cable when it is open. The characteristic impedance value of the cable can be quickly determined based on the first impedance value obtained by the first voltage value and the first current value and the second impedance value obtained by the second voltage value and the second current value, so as to test and obtain the characteristic impedance value of the cable, which is convenient for impedance matching.

[0061] See also Figure 5 , Figure 5 FIG. 1 is a block diagram of a characteristic impedance testing device in an embodiment of the present application. Figure 5 As shown, the present application also provides a characteristic impedance testing device 10, and the characteristic impedance testing device 10 adopts the above-mentioned characteristic impedance testing method to test and obtain the characteristic impedance value of the cable CC. Among them, the characteristic impedance testing device 10 includes a control unit 100 and an acquisition unit 200. The control unit 100 is used to control the input end In of the cable CC to access the radio frequency signal RFS, and control the output end Out of the cable CC to be grounded GND, and control the output end Out of the cable CC to be open. The acquisition unit 200 is used to obtain a first voltage value V1 and a first current value I1 of the output end Out of the cable CC when the output end Out of the cable CC is grounded GND, and to obtain a second voltage value V2 and a second current value I2 of the output end Out of the cable CC when the output end Out of the cable CC is open. Among them, the control unit 100 is also used to obtain a first impedance value according to the first voltage value V1 and the first current value I1, and to obtain a second impedance value according to the second voltage value V2 and the second current value I2, and to determine the characteristic impedance value of the cable CC according to the first impedance modulus value and the second impedance modulus value.

[0062] Please refer again Figure 1 .like Figure 1 As shown, the characteristic impedance test method includes:

[0063] Step S100: controlling the DC power supply unit and the RF power amplifier to operate together under a plurality of different operating conditions.

[0064] Step S200: Obtain a first set of test parameters between the DC power supply unit and the RF power amplifier under each operating condition, and obtain a second set of test parameters between the RF power amplifier and the test resistor under each operating condition, thereby obtaining multiple first sets of test parameters and multiple second sets of test parameters corresponding to multiple different operating conditions.

[0065] Step S300: Determine the operating efficiency of the RF power amplifier under each operating condition according to the first set of test parameters and the second set of test parameters obtained under each operating condition, thereby obtaining a plurality of operating efficiencies corresponding to a plurality of different operating conditions.

[0066] Among them, more specific steps of the characteristic impedance testing method can refer to the relevant content of the characteristic impedance testing method in any of the above embodiments, which will not be repeated here.

[0067] In one or more embodiments, the characteristic impedance test device 10 may further include a switch unit 300, and the control unit 100 is further used to control the switch unit 300 to be selectively connected to the output end Out of the cable CC, so as to control the output end Out of the cable CC to be grounded GND or open. The switch unit 300 may include a single-pole multi-throw switch, and the control unit 100 may control the single-pole multi-throw switch to be connected to or disconnected from the ground GND, so as to correspondingly connect the output end Out of the cable CC to the ground GND or open circuit.

[0068] In one or more embodiments, the control unit 100 can be a general-purpose processor such as a central processing unit (CPU), or a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate logic devices, transistor logic devices and other logic control devices, or a microprocessor such as a micro control unit (MCU).

[0069] The steps of the characteristic impedance test method and the functional operations performed by the characteristic impedance test device 10 correspond to each other, and the relevant contents can be referred to each other, which will not be repeated here. The control unit 100 is mainly used to control whether the input end In of the cable CC is connected to or not connected to the radio frequency signal RFS, and to control the connection relationship of the output end Out of the cable CC, and to perform a series of operations on the first voltage value V1, the first current value I1, the second voltage value V2, the second current value I2, the first impedance value and the second impedance value to determine the characteristic impedance value of the cable CC.

[0070] The characteristic impedance testing method and the characteristic impedance testing device 10 of the present application do not need to obtain other parameters, and only need to obtain the first voltage value V1 and the first current value I1 of the output end Out of the cable CC when it is grounded GND and the second voltage value V2 and the second current value I2 of the output end Out of the cable CC when it is open circuit. The characteristic impedance value of the cable CC can be quickly determined based on the first impedance value obtained from the first voltage value V1 and the first current value I1 and the second impedance value obtained from the second voltage value V2 and the second current value I2, so as to test and obtain the characteristic impedance value of the cable CC, which is convenient for impedance matching.

[0071] See also Figure 6 , Figure 6 FIG. 1 is a block diagram of a radio frequency power supply device in an embodiment of the present application. Figure 6 As shown, the present application also provides a radio frequency power supply device 1000 , which includes a radio frequency power supply RF, a cable CC and the above-mentioned characteristic impedance testing device 10 .

[0072] Please refer again Figure 5 .like Figure 5 As shown, the characteristic impedance test device 10 adopts the above-mentioned characteristic impedance test method to test and obtain the characteristic impedance value of the cable CC. The characteristic impedance test device 10 includes a control unit 100 and an acquisition unit 200. The control unit 100 is used to control the input end In of the cable CC to access the radio frequency signal RFS, and control the output end Out of the cable CC to be grounded GND, and control the output end Out of the cable CC to be open. The acquisition unit 200 is used to obtain a first voltage value V1 and a first current value I1 of the output end Out of the cable CC when the output end Out of the cable CC is grounded GND, and to obtain a second voltage value V2 and a second current value I2 of the output end Out of the cable CC when the output end Out of the cable CC is open. The control unit 100 is also used to obtain a first impedance value according to the first voltage value V1 and the first current value I1, and to obtain a second impedance value according to the second voltage value V2 and the second current value I2, and to determine the characteristic impedance value of the cable CC according to the first impedance modulus value and the second impedance modulus value.

[0073] The more specific structure of the characteristic impedance testing device 10 can refer to the relevant content of the characteristic impedance testing device 10 in any of the aforementioned embodiments, which will not be repeated here.

[0074] like Figure 6 As shown, the radio frequency power source RF can provide power to the load RL through the cable CC.

[0075] The characteristic impedance testing method, characteristic impedance testing device 10 and radio frequency power supply equipment 1000 of the present application do not need to obtain other parameters, but only need to obtain the first voltage value V1 and the first current value I1 of the output end Out of the cable CC when it is grounded GND and the second voltage value V2 and the second current value I2 of the output end Out of the cable CC when it is open circuit. The characteristic impedance value of the cable CC can be quickly determined based on the first impedance value obtained from the first voltage value V1 and the first current value I1 and the second impedance value obtained from the second voltage value V2 and the second current value I2, so as to test and obtain the characteristic impedance value of the cable CC, which is convenient for impedance matching.

[0076] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on a computer or a processor, the characteristic impedance testing method of any of the aforementioned embodiments is implemented.

[0077] In the multiple embodiments provided in the present application, it should be understood that the disclosed methods, devices and equipment can be implemented in other ways. For example, the device embodiments described above are only schematic; for example, the division of units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0078] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0079] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0080] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0081] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A characteristic impedance testing method, characterized in that: Used to test and obtain the characteristic impedance value of a cable, wherein the cable has an input end and an output end, and the input end of the cable is used to access a radio frequency signal; Wherein, the characteristic impedance testing method comprises: Controlling the input end of the cable to access the radio frequency signal, and controlling the output end of the cable to be grounded, obtaining a first voltage value and a first current value of the output end of the cable, and obtaining a first impedance value according to the first voltage value and the first current value; Controlling the input end of the cable to access the radio frequency signal, and controlling the output end of the cable to be open-circuited, obtaining a second voltage value and a second current value at the output end of the cable, and obtaining a second impedance value according to the second voltage value and the second current value; The characteristic impedance value of the cable is determined according to the first impedance modulus value and the second impedance modulus value.

2. The characteristic impedance testing method according to claim 1, characterized in that: The method of determining the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value includes: Obtaining a first operation value according to the first impedance modulus value and the second impedance modulus value; The characteristic impedance value of the cable is determined based on the first operation value.

3. The characteristic impedance testing method according to claim 2, characterized in that: The step of obtaining the first operation value according to the first impedance modulus value and the second impedance modulus value includes: performing a multiplication operation on the first impedance modulus value and the second impedance modulus value to obtain the first operation value; Determining the characteristic impedance value of the cable according to the first operation value includes: performing a square root operation on the first operation value to obtain the characteristic impedance value of the cable.

4. The characteristic impedance testing method according to claim 3, characterized in that: The conduction length of the radio frequency signal in the cable is a first length, and the phase parameter of the radio frequency signal in the cable is a first phase parameter; The first impedance modulus is the product of the characteristic impedance value of the cable and a first intermediate value, and the second impedance modulus is the quotient of the characteristic impedance value of the cable and the first intermediate value, wherein the first intermediate value is the tangent value of the product of the first length and the first phase parameter.

5. The characteristic impedance testing method according to claim 1, characterized in that: The input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is grounded, a first voltage value and a first current value of the output end of the cable are obtained, and a first impedance value is obtained according to the first voltage value and the first current value, including: The input end of the control cable is connected to the radio frequency signal, and the output end of the control cable is connected to the ground so that the output end of the cable is grounded, a first voltage value and a first current value of the output end of the cable are obtained, and the first voltage value and the first current value are multiplied to obtain a first impedance value.

6. The characteristic impedance testing method according to claim 1, characterized in that: The input end of the control cable is connected to a radio frequency signal, and the output end of the control cable is open-circuited, a second voltage value and a second current value of the output end of the cable are obtained, and a second impedance value is obtained according to the second voltage value and the second current value, including: The input end of the control cable is connected to the radio frequency signal, and the output end of the control cable is disconnected from the ground so that the output end of the cable is open-circuited, a second voltage value and a second current value of the output end of the cable are obtained, and the second voltage value and the second current value are multiplied to obtain a second impedance value.

7. The characteristic impedance testing method according to claim 1, characterized in that: After determining the characteristic impedance value of the cable according to the first impedance modulus and the second impedance modulus, the characteristic impedance testing method further includes: The output end of the control cable is connected to the load, and the input end of the control cable is connected to the radio frequency signal, so that the connected radio frequency signal is transmitted to the load through the cable.

8. A characteristic impedance testing device, characterized in that: The characteristic impedance testing device adopts the characteristic impedance testing method according to any one of claims 1 to 7 to test and obtain the characteristic impedance value of the cable; Wherein, the characteristic impedance testing device comprises: A control unit, controlling the input end of the cable to access a radio frequency signal, controlling the output end of the cable to be grounded, and controlling the output end of the cable to be open; an acquisition unit, configured to acquire a first voltage value and a first current value of the output end of the cable when the output end of the cable is grounded, and to acquire a second voltage value and a second current value of the output end of the cable when the output end of the cable is open; The control unit is further used to obtain a first impedance value according to the first voltage value and the first current value, and to obtain a second impedance value according to the second voltage value and the second current value, and to determine the characteristic impedance value of the cable according to the first impedance modulus value and the second impedance modulus value.

9. A radio frequency power supply device, characterized in that: It comprises a radio frequency power supply, a cable and the characteristic impedance testing device as claimed in claim 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program runs on a computer or a processor, the characteristic impedance testing method according to any one of claims 1 to 7 is implemented.

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