A program-controlled multi-channel microwave device switching device and method

Abstract

The invention relates to the technical field of microwave device switching, and discloses a program-controlled multi-channel microwave device switching device and method. The switching device adopted by the method comprises: an external frame box and an internal microwave device link. The front panel of the external frame box is provided with two signal input ports, two signal output ports and a touch screen operation panel. The internal microwave device link structure is connected in a switch cascade manner and consists of two microwave device switching branches. The microwave device switching branch comprises signal amplification, signal attenuation and signal filtering nodes. The invention can meet the switching of forward and reverse bidirectional and multi-channel microwave device links, reduce the probability of device damage caused by input port limitation, and meet the test requirements of different test scenarios and different tested objects, wherein the device switching and signal flow are intuitive, the system interactivity is good, the test complexity is greatly reduced, the test efficiency is improved, and it is suitable for a variety of test environments.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave device switching, and in particular to a program-controlled multi-channel microwave device switching device and method. Background Art

[0002] When conducting RF signal testing, different test parameters often require attenuation, amplification, filtering and other operations to convert the signal to be tested into a standard signal that can be identified and analyzed, which is signal conditioning. In a certain RF system test, testers use RF cables as the connecting medium and connect microwave devices such as attenuators, amplifiers, filters, and splitters in series to achieve different test purposes. Due to different test scenarios and various signal patterns under test, microwave devices often need to be manually replaced during testing, which increases the complexity of the test to a certain extent and also reduces the reliability and efficiency of the test. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology, the present invention provides a program-controlled multi-channel microwave device switching device and method.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical solution:

[0005] A program-controlled multi-channel microwave device switching device comprises: an external frame box and an internal microwave device link, wherein the front panel of the external frame box is provided with two signal input ports, two signal output ports and a touch screen operation panel, wherein the signal input port A is two SMA (Φ3.5) ports directly connected to a test instrument, and the signal output port B is two N-type radio frequency ports for connecting a device under test; the signal port A and the port B are both input or output ports.

[0006] The internal microwave device link structure is connected in a switch cascade mode and consists of two microwave device switching branches. Two splitters and combiners are respectively set at both ends of link A and link B. By controlling the on and off of the single-pole single-throw switch SPST at both ends of the link: the input signal splitting and input signal combining functions are realized; the output signal splitting and output signal combining functions are realized;

[0007] The microwave device switching branch includes signal amplification, signal attenuation and signal filtering nodes; the signal amplification node is provided with two amplification modules in opposite directions according to different signal input directions. The selection of the amplification module is achieved by controlling the connection of the single-pole double-throw switch SP2T, so that each switch selects the through and amplification functions; the signal attenuation node is provided with 10dB and 1dB step attenuation modules, and the selection of the 10dB step attenuation module is controlled by controlling the single-pole double-throw switches SP2T5 and SP2T7, SP2T6 and SP2T8, and the selection of the step 1dB attenuation module is controlled by controlling the single-pole double-throw switches SP2T9 and SP2T11, SP2T10 and SP2T12. When each No. 1 switch is connected, The switch selects the pass-through function. When connected to switch No. 2, each switch selects the 10dB step attenuation function or the 1dB step attenuation function. The signal filtering node is equipped with three low-pass filter modules of 300MHz, 1GHz and 2.4GHz. The module selection is realized by controlling the connection of the single-pole four-throw switch SP4T. When the single-pole four-throw switches SP4T1 and SP4T3, SP4T2 and SP4T4 are connected to their respective switch No. 1, each switch selects the pass-through function. When connected to their respective switch No. 2, each switch selects the 300MHz low-pass filter function. When connected to their respective switch No. 3, each switch selects the 1GHz low-pass filter function. When connected to their respective switch No. 4, each switch selects the 2.4GHz low-pass filter function.

[0008] A method for program-controlled multi-channel microwave device switching equipment, comprising: selecting a signal input port, selecting a control working mode, and building a microwave device switching link;

[0009] 1) Signal input port selection: select "A-end input" or "B-end input" according to the signal input direction. When the signal is output from the test instrument, select "A-end input", and when it is output from the device under test, select "B-end input";

[0010] 2) Select the control working mode. The control software has four working modes: "single input single output", "single input dual output", "dual input single output" and "dual input dual output". Select according to the actual signal test requirements;

[0011] 3) Build a microwave device switching link. The signal conditioning link construction frame is used to build a microwave device switching link under different working conditions and to configure the signal conditioning function in detail;

[0012] The microwave device switching link construction is equipped with signal attenuation, signal filtering, signal amplification and link conditioning modules, wherein the attenuation range of the signal attenuation module is 70dB, and the attenuation step is set to 1dB or 10dB; the signal filtering module has three configurable frequency band low-pass filtering functions of 300MHz, 1GHz and 2.4GHz; the signal amplification module can achieve a module gain of 20dB by configuring an equalizer; the link conditioning module has three modes of combining, splitting and direct-through, and splitters and combiners are set at both ends of the microwave device switching link to realize the signal splitting and combining modes. In addition, direct-through links are set in each functional module to realize the signal direct-through function;

[0013] The steps to realize the microwave device switching function are as follows: the first step is to select the signal input port, the second step is to select the software working mode required for signal conditioning, and the third step is to configure the required functional modules in the signal conditioning link building frame to build the microwave device switching link; the microwave device switching function in each working mode is realized as follows:

[0014] (1) "Single-input single-output" (SISO) working mode refers to a working mode in which a single signal is input into a programmable multi-channel microwave device switching device, and a single signal is output after signal conditioning by the microwave device; it controls the disconnection of switches SPST2, SPST3, SPST4, SPST9 and SPST10 to generate a "SISO" mode signal conditioning microwave device connection link, controls the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1 and SP4T3, and realizes the hardware configuration of microwave device functional modules;

[0015] (2) "Single-input dual-output" means that a single signal is input into a programmable multi-channel microwave device switching device, and two signals are output after signal conditioning by the microwave device. In the "single-input dual-output" mode, two states are distinguished: "divide first and modulate later" and "modulate first and divide later".

[0016] 1) "Divide first, modulate later" state. "Divide first, modulate later" means that after the signal is input from the input end, it is connected to the splitter to be divided into two signals. The two signals are conditioned separately and then output from the output end. Select "Divide first, modulate later" in the "single-input, dual-output" mode. In the two-way microwave device connection link, click "OK" and the signal flow arrow automatically connects each module; control the on and off of the internal switch of the microwave device switching device to start the signal conditioning of the "single-input, dual-output" mode in the "divide first, modulate later" situation. Control the SPST2, SPST4, SPST9 and SPST10 switches to be disconnected and the SPST3 switch to be connected, generating the signal conditioning microwave device hardware connection link in the "single-input, dual-output" mode in the "divide first, modulate later" situation. Control Control the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1, SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2, SP4T4 in branch 2, to realize the hardware configuration of each microwave device functional module;

[0017] 2) "Adjust before splitting" state, "adjust before splitting" means that after a single signal is input from the input port, it is conditioned by the microwave device, and the conditioned signal is connected to the splitter to be split into two signals and output from the output port; select "adjust before splitting" in the "single input dual output" mode, configure various function controls in the single signal microwave device connection link, click "OK" and the signal automatically connects to each module, controls the on and off of the internal switch of the microwave device switching device, starts the signal conditioning in the "single input dual output" mode in the "adjust before splitting" state, controls the SPST3, SPST4, SPST8 and SPST10 switches to be disconnected and the SPST9 switch to be connected, generates the signal conditioning microwave device hardware connection link in the "single input dual output" mode in the "adjust before splitting" state, controls the connection of the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1, SP4T3, and realizes the hardware configuration of the microwave device function module;

[0018] (3) "Dual input, single output". The "dual input, single output" working mode refers to the working mode in which two signals are input into the programmable multi-channel microwave device switching device, and a single signal is output after the microwave device signals are conditioned. In the "dual input, single output" mode, two states are distinguished: "first close, then adjust" and "first adjust, then close".

[0019] 1) "First combine, then adjust" state. "First combine, then adjust" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal, and this signal is output from the output end after being conditioned by the microwave device. Select "First combine, then adjust" in the "Dual input, single output" mode, configure various function controls in a single microwave device switching link, click "OK" and the signal automatically connects to each module, controls the on and off of the internal switch of the microwave device switching device, starts the signal conditioning in the "Dual input, single output" mode in the "First combine, then adjust" state, controls the SPST3, SPST6, SPST9 and SPST10 switches to be disconnected and the SPST4 switch to be connected, generates the signal conditioning microwave device hardware connection link in the "Dual input, single output" mode in the "First combine, then adjust" state, controls the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1, SP4T3, and realizes the hardware configuration of the microwave device function module.

[0020] 2) "Adjust before closing" state. "Adjust before closing" means that after two signals are input from the input end, they are conditioned by microwave devices respectively. The conditioned two signals are connected to the combiner to form one signal and output from the output end. Select "Adjust before closing" in the "Dual Input Single Output" mode, configure the function controls of each link in the two microwave device switching links respectively, click "OK" and the signal automatically connects to each module, controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning in the "Dual Input Single Output" mode in the "Adjust before closing" state, controls the SPST3, SPST4 and SPST9 switches to be disconnected and the SPST10 switch to be connected, and generates The hardware connection link of the signal conditioning microwave device in the "double-input single-output" mode in the "adjust before closing" state controls the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1, SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2, SP4T4 in branch 2, to realize the hardware configuration of each microwave device functional module;

[0021] (4) "Dual-input, dual-output" means that two signals are input into the programmable multi-channel microwave device switching device, and two signals are output after the microwave device signals are conditioned. In the "dual-input, dual-output" mode, two states are distinguished: "direct conditioning" and "combined conditioning".

[0022] 1) "Direct conditioning" state, "direct conditioning" means that after two signals are input from the two ports of the input end, they are respectively conditioned by the microwave device, and the conditioned two signals are directly output from the two ports of the output end; select "direct conditioning" in the "dual input and dual output" mode, configure the function controls of each link in the two microwave device switching links, click "OK" and the signal automatically connects to each module, and the background controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "dual input and dual output" mode in the "direct conditioning" state, controlling the SPST3, SPST4, SPST9 and SPST10 switches to be disconnected, generating " The hardware connection link of the signal conditioning microwave device in the "direct conditioning" state in the "dual-input and dual-output" mode controls the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1 and SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2 and SP4T4 in branch 2, to realize the hardware configuration of each microwave device functional module;

[0023] 2) "Merge and Condition" state. "Merge and Condition" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal. After the signal is conditioned by the microwave device, it is connected to the splitter. The two signals formed are output from the two ports of the output end respectively. Select "Merge and Condition" in the "Dual Input Dual Output" mode, configure each function control in a single microwave device switching link, click "OK" and the signal will automatically connect to each module. The background controls the on and off of the internal switch of the microwave device switching device, and the "Dual Input Dual Output" mode starts in the "Merge and Condition" state. Signal conditioning under the control of SPST3, SPST6, SPST8 and SPST10 switches to disconnect and SPST4 and SPST9 switches to connect, generate the signal conditioning microwave device hardware connection link of the "dual-input and dual-output" mode in the "merged conditioning" state, control the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1, SP4T3, and realize the hardware configuration of the microwave device functional module.

[0024] A method for developing a programmable multi-channel microwave device switching device, wherein the "single-input dual-output" mode meets the test requirement of splitting a single signal into two different signals in the "divide first and modulate later" state, port A1 is connected to a signal source to access the input signal, and ports B1 and B2 are respectively connected to different devices under test to output the signal conditioned by the microwave device; start the control, click the "A-end input" control, click "single-input dual-output" and select the "divide first and modulate later" state, and two microwave device switching branches are displayed in the signal conditioning link construction box, select port A1, branch 1 is configured with 10dB step attenuation, 300MHz low-pass filter and 20dB amplifier module, and branch 2 is only configured with 1 dB step attenuation; after clicking the "OK" control, the switch connection is driven, and the port A1 input signal is used in the "divide first and then adjust" case, the SPST2, SPST4, SPST9 and SPST10 switches are disconnected, and the SPST3 switch is connected to realize the working mode; according to the signal conditioning function configuration: SP2T1 and SP2T3, SP2T9 and SP2T11 in branch 1 are connected to the pass-through function of switch No. 1, SP2T5 and SP2T7 are connected to the 10dB step attenuation function of switch No. 2, SP4T1 and SP4T3 are connected to the 300MHz low-pass filter function of switch No. 2, SP2T13 and SP2T15 are connected to the 20dB amplification function of switch No. 2, SP2T2 and SP2T4, SP2T6 and SP2T8, SP2T14 and SP2T16, and SP4T2 and SP4T4 in branch 2 are connected to the pass-through function of switch No. 1, and SP2T10 and SP2T12 are connected to the 1dB step attenuation function of switch No. 2.

[0025] Due to the adoption of the above-mentioned technical solution, the present invention has the following advantages:

[0026] 1. It adopts manual and program control modes, which is suitable for various test environments.

[0027] 2. The touch screen is used, the device switching and signal flow are intuitive, and the system interactivity is good.

[0028] 3. It can meet the requirements of bidirectional and multi-channel microwave device link switching. On the one hand, it greatly reduces the probability of equipment damage caused by input port limitations, and on the other hand, it enables complex signal links to be switched with one click according to different test configurations.

[0029] 4. A power divider and combiner combination control is used at both ends of the microwave device link to achieve input and output port channel switching.

[0030] 5. It can realize any combination of attenuator, filter and amplifier functions to meet the test requirements of different test scenarios and different objects under test, greatly reducing the test complexity and improving the test efficiency.

[0031] 6. Microwave device switching links are suitable for RF signal conditioning with frequencies ranging from 100MHz to 6GHz. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attached Figure 1 It is a schematic diagram of the external framework of a program-controlled multi-channel microwave device switching device;

[0033] Attached Figure 2 It is the overall block diagram of the hardware implementation principle;

[0034] Attached Figure 3 It is the control block diagram;

[0035] Attached Figure 4 It is a diagram of the construction of a microwave device switching link;

[0036] Attached Figure 5 It is a configuration diagram of the function module of the microwave device switching link in the "single-input single-output" mode;

[0037] Attached Figure 6 It is the hardware schematic diagram of the "single-input single-output" mode;

[0038] Attached Figure 7 It is a configuration diagram of the microwave device switching link under the “divide first and modulate later” mode of “single input and dual output”;

[0039] Attached Figure 8 This is the hardware schematic diagram of the "single-input dual-output" mode in the case of "separation first, then modulation";

[0040] Attached Fig. 9 It is a configuration diagram of the microwave device switching link under the “single input dual output” mode and “modulation before division” mode.

[0041] Attached Fig.10 This is the hardware schematic diagram of the "single-input dual-output" mode in the case of "modulation first, then distribution";

[0042] Attached Fig.11 It is the configuration diagram of the “double-input single-output” microwave switching link in the “close first and modulate later” mode;

[0043] Attached Fig.12 This is the hardware schematic diagram of the "dual-input, single-output" mode in the "first close, then adjust" case;

[0044] Attached Fig.13 This is the configuration diagram of the "double-input single-output" microwave switching link in the "adjust before closing" mode; Fig.14 It is the hardware schematic diagram of "double input and single output" under "adjust before closing";

[0045] Attached Fig.15 It is the “double-input double-output” in “direct conditioning” microwave switching link configuration diagram;

[0046] Attached Fig.16This is the hardware schematic diagram of "dual input and dual output" under "direct conditioning";

[0047] Attached Fig.17 It is the configuration diagram of the “dual-input and dual-output” microwave switching link in the “combined conditioning” microwave device;

[0048] Attached Fig.18 It is the hardware schematic diagram of "dual input and dual output" under "combined conditioning". DETAILED DESCRIPTION

[0049] As attached Figures 1 to 18 As shown, a program-controlled multi-channel microwave device switching device provides two signal input ports: A port and two signal output ports: B port;

[0050] 1. The microwave device switching device is composed of a hardware box and a control component. The control component controls the hardware box through a serial port to realize the microwave device switching function.

[0051] (1) Hardware structure: The hardware box consists of an external frame and an internal microwave device link; the external frame size is 600*450*200mm. The front panel of the box is equipped with signal input and output ports and a touch screen operation panel. The A ports (A1 and A2) are two SMA (Φ3.5) ports that are directly connected to the test instrument, and the B ports (B1 and B2) are two N-type RF ports that are used to connect to the device under test. Both the A port and the B port can be used as input or output ports. See the attached external frame structure diagram. Figure 1 .

[0052] The internal microwave device link is implemented by switch cascade. The link structure diagram is shown in the attached Figure 2 . The link structure consists of two microwave device switching branches. Two splitters and combiners are set at both ends of the link A and B respectively. The input and output signal combining and branching functions are realized by controlling the on and off of the single-pole single-throw switches (SPST) at both ends of the link. Among them, turning off SPST2 and SPST4 or turning off SPST1 and SPST3 can realize the input signal branching function; turning off SPST3 and SPST6 or turning off SPST4 and SPST5 can realize the input signal combining function; turning off SPST8 and SPST10 or turning off SPST7 and SPST9 can realize the output signal branching function; turning off SPST9 and SPST12 or turning off SPS10 and SPST11 can realize the output signal combining function; turning off SPST3, SPST4, SPS9 and SPST10 can realize the direct conditioning function of the microwave device switching branch.

[0053] The microwave device switching branch includes signal amplification, signal attenuation and signal filtering nodes. The signal amplification node is equipped with two amplification modules in opposite directions according to the different signal input directions. The selection of the amplification module is realized by controlling the connection of the single-pole double-throw switch (SP2T). When SP2T1 and SP2T3, SP2T2 and SP2T4, SP2T13 and SP2T15, and SP2T14 and SP2T16 are connected to their respective No. 1 switches, each switch selects the pass-through function. When connected to No. 2 switches, each switch selects the amplification function. The signal attenuation node is equipped with 10dB and 1dB step attenuation modules. SP2T5 and SP2T7, SP2T6 and SP2T8 control the selection of the 10dB step attenuation module, and SP2T9 and SP2T11, SP2T10 and SP2T12 control the step 1dB The selection of attenuation modules, when connected to their respective No. 1 switches, each switch selects the pass-through function, and when connected to No. 2 switches, each switch selects the 10dB step attenuation function or the 1dB step attenuation function; the signal filtering node is equipped with three low-pass filter modules of 300MHz, 1GHz and 2.4GHz, and the module selection is achieved by controlling the connection of the single-pole four-throw switch (SP4T), among which SP4T1 and SP4T3, SP4T2 and SP4T4, when connected to their respective No. 1 switches, each switch selects the pass-through function, when connected to their respective No. 2 switches, each switch selects the 300MHz low-pass filter function, when connected to their respective No. 3 switches, each switch selects the 1GHz low-pass filter function, and when connected to their respective No. 4 switches, each switch selects the 2.4GHz low-pass filter function.

[0054] (2) Control component function: the control component drives the on and off of the internal switch of the microwave device switching device through the program, realizes the hardware connection of each microwave device functional module, and achieves the purpose of signal conditioning. Figure 3 As shown, it is mainly divided into three parts: one is the signal input port selection. You can select "A-end input" or "B-end input" according to the signal input direction. When the signal is output from the test instrument, select "A-end input", and when it is output from the device under test, select "B-end input"; the second is to select the control software working mode. The control software has four working modes: "single input and single output", "single input and dual output", "dual input and single output" and "dual input and dual output". Select according to the actual signal test needs; the third is to build a microwave device switching link. The signal conditioning link construction frame is used to build a microwave device switching link under different working conditions, and is used to configure the signal conditioning function in detail.

[0055] The signal conditioning link construction frame is provided with signal attenuation, signal filtering, signal amplification and link conditioning modules for constructing microwave device switching links. Figure 4As shown. The attenuation range of the signal attenuation module is 70dB, and the attenuation step is set to 1dB or 10dB; the signal filter module has three configurable frequency band low-pass filtering functions: 300MHz, 1GHz and 2.4GHz; the signal amplification module can achieve a module gain of 20dB by configuring an equalizer; the link conditioning module has three modes: combining, splitting and direct-through. The splitters and combiners are set at both ends of the microwave device switching link to realize the signal splitting and combining modes. In addition, direct-through links are set in each functional module to realize the signal direct-through function.

[0056] 2. Function realization: The control unit realizes the multi-channel microwave device switching function in three steps: the first step is to select the signal input port, the second step is to select the software working mode required for the microwave device switching, and the third step is to configure the required microwave device function module in the signal conditioning link construction frame. The microwave device switching function in each working mode is realized as follows:

[0057] (1) "Single Input Single Output" The "Single Input Single Output" working mode refers to a working mode in which a single signal is input into the microwave device switching device and a single signal is output after the microwave device signal is conditioned. Select the "Single Input Single Output" mode based on the input port, select the function control in each functional module of the microwave device switching link, and click "OK" to automatically connect the modules. The microwave device switching link functional module configuration in this mode is as shown in the attached figure. Figure 5 shown.

[0058] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "single input single output" mode. The hardware implementation principle of the "single input single output" mode is as shown in the attached figure. Figure 6 The program controls the SPST2, SPST3, SPST4, SPST9 and SPST10 switches to be disconnected, generating a "single-input single-output" mode microwave device signal conditioning hardware connection link, and controls the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1, SP4T3 according to the functional modules configured by the software, thus realizing the hardware configuration of the microwave device functional modules.

[0059] (2) "Single-input dual-output" The "single-input dual-output" working mode refers to a working mode in which a single signal is input into the microwave device switching device, and two signals are output after the microwave device signal is conditioned. The "single-input dual-output" mode distinguishes between "divide first and then modulate" and "modulate first and then divide".

[0060] 1) "Divide first, modulate later" means that after the signal is input from the input end, it is connected to the splitter to be divided into two signals, and the two signals are conditioned and output from the output end. Select "Divide first, modulate later" in the "Single Input Double Output" mode. In the two-way microwave device switching link, click "OK" and the signal flow arrows automatically connect the modules. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Figure 7 shown.

[0061] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "single input dual output" mode under the condition of "separation first and modulation later". The hardware implementation principle is as shown in the attached Figure 8 As shown. The program controls the SPST2, SPST4, SPST9 and SPST10 switches to be disconnected and the SPST3 switch to be connected, generating a microwave device signal conditioning hardware connection link in the "single-input dual-output" mode under the condition of "divide first and modulate later". According to the functional modules configured by the software, the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1 and SP4T3 in branch 1 and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2 and SP4T4 in branch 2 are controlled respectively, realizing the hardware configuration of each functional module of the microwave device.

[0062] 2) "Adjust before splitting" situation: "Adjust before splitting" means that after a single signal is input from the input port, it is conditioned by the microwave device signal, and the conditioned signal is connected to the splitter to split into two signals and output from the output port. Select "Adjust before splitting" in the "Single Input Dual Output" mode, configure each function control in a single microwave device switching link, click "OK" and the signal flow arrow automatically connects each module. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Fig. 9 shown.

[0063] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "single input dual output" mode under the condition of "modulation first and then division". The hardware implementation principle is as shown in the attached Fig.10As shown. The program controls the SPST3, SPST4, SPST8 and SPST10 switches to be disconnected and the SPST9 switch to be connected, generating a microwave device signal conditioning hardware connection link in the "single-input dual-output" mode under the condition of "modulation first and then division". According to the functional modules configured by the software, the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1 and SP4T3 are controlled to realize the hardware configuration of the microwave device switching link functional module.

[0064] (3) "Dual-input, single-output" working mode refers to the working mode in which two signals are input into the microwave switching device and a single signal is output after signal conditioning. In the "dual-input, single-output" mode, two situations are distinguished: "first close and then adjust" and "first adjust and then close".

[0065] 1) "Combine first, then adjust" situation. "Combine first, then adjust" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal, which is then conditioned by the microwave device and output from the output end. Select "Combine first, then adjust" in the "Dual Input Single Output" mode, configure each function control in a single microwave device switching link, click "OK" and the signal flow arrow automatically connects each module. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Fig.11 shown.

[0066] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "double-input single-output" mode under the "first close and then adjust" condition. The hardware implementation principle is as shown in the attached Fig.12 As shown. The program controls the SPST3, SPST6, SPST9 and SPST10 switches to be disconnected and the SPST4 switch to be connected, generating a microwave device signal conditioning hardware connection link in the "double-input single-output" mode under the "first close and then adjust" condition. According to the functional modules configured by the software, the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1 and SP4T3 are controlled to realize the hardware configuration of the microwave device switching link functional module.

[0067] 2) "Adjust before combining" means that after two signals are input from the input end, they are conditioned by microwave devices respectively, and the conditioned two signals are connected to the combiner to form one signal output from the output end. Select "Adjust before combining" in the "Dual Input Single Output" mode, configure the function controls of each link in the two microwave device switching links, click "OK", and the signal flow arrows automatically connect the modules. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Fig.13 shown.

[0068] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "double-input single-output" mode under the "first adjust and then close" condition. The hardware implementation principle is as shown in the attached Fig.14 As shown. The program controls the SPST3, SPST4 and SPST9 switches to be disconnected and the SPST10 switch to be connected, generating a microwave device signal conditioning hardware connection link in the "double-input single-output" mode under the "adjust before closing" condition. According to the functional modules configured by the software, the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1 and SP4T3 in branch 1 and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2 and SP4T4 in branch 2 are controlled respectively, realizing the hardware configuration of each functional module of the microwave device switching link.

[0069] (4) "Dual Input Dual Output" The "Dual Input Dual Output" working mode refers to the working mode in which two signals are input into the microwave device switching device and two signals are output after signal conditioning. The "Dual Input Dual Output" mode distinguishes between "direct conditioning" and "combined conditioning".

[0070] 1) "Direct conditioning" means that after two signals are input from the two ports of the input end, they are conditioned by microwave devices respectively, and the conditioned two signals are directly output from the two ports of the output end. Select "Direct conditioning" in the "Dual-input and dual-output" mode, and configure the function controls of each link in the two microwave device switching links. After clicking "OK", the signal flow arrows automatically connect the modules. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Fig.15 shown.

[0071] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "double-input double-output" mode under the "direct conditioning" condition. The hardware implementation principle is as shown in the attached figure. Fig.16As shown. The program controls the SPST3, SPST4, SPST9 and SPST10 switches to be disconnected, generating a microwave device signal conditioning hardware connection link in the "double-input double-output" mode under the "direct conditioning" condition. According to the functional modules configured by the software, the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1 and SP4T3 in branch 1 and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2 and SP4T4 in branch 2 are controlled respectively, realizing the hardware configuration of each functional module of the microwave device switching link.

[0072] 2) "Merge and Condition" situation: "Merge and Condition" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal. After the signal is conditioned by the microwave device, it is connected to the splitter, and the two signals formed are output from the two ports of the output end respectively. Select "Merge and Condition" in the "Dual Input and Dual Output" mode, configure each function control in a single microwave device switching link, and click "OK" to automatically connect each module. The microwave device switching link function module configuration in this mode is as shown in the attached figure. Fig.17 shown.

[0073] After the functional module configuration is completed, the background program controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "double-input double-output" mode under the "combined conditioning" condition. The hardware implementation principle is as shown in the attached Fig.18 As shown. The program controls the SPST3, SPST6, SPST8 and SPST10 switches to be disconnected and the SPST4 and SPST9 switches to be connected, generating a microwave device signal conditioning hardware connection link in the "double-input double-output" mode under the "combined conditioning" condition. According to the functional modules configured by the software, the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1 and SP4T3 are controlled to realize the hardware configuration of the microwave device switching link functional module.

[0074] For example, the "single-input dual-output" mode can meet the test requirements of splitting a single signal into two different signals under the "divide first and modulate later" condition. Figure 1 , 3 , 7, and 8. Figure 1 The A1 port is connected to the signal source to receive the input signal, and the B1 and B2 ports are connected to different devices under test to output the conditioned signal; start the control program and the main interface of the control software will appear, such as Figure 3As shown; click the "A-side input" control, click "single input and dual output" and select "divide first and then modulate". The signal conditioning link construction box displays two microwave device switching branches, as shown in Figure 7 As shown, select the A1 port, configure branch 1 with 10dB step attenuation, 300MHz low-pass filter and 20dB amplifier module, and configure branch 2 with only 1 dB step attenuation; after clicking the "OK" control, the program drives the switch connection, as shown in Figure 8 As shown, the A1 port input signal is adopted in the case of "divide first and modulate later", the SPST2, SPST4, SPST9 and SPST10 switches are disconnected, and the SPST3 switch is connected to realize this working mode; according to the microwave device switching link function configuration, SP2T1 and SP2T3, SP2T9 and SP2T11 in branch 1 are connected to the direct-through function of switch No. 1, SP2T5 and SP2T7 are connected to the 10dB step attenuation function of switch No. 2, SP4T1 and SP4T3 are connected to the 300MHz low-pass filtering function of switch No. 2, SP2T13 and SP2T15 are connected to the 20dB amplification function of switch No. 2, SP2T2 and SP2T4, SP2T6 and SP2T8, SP2T14 and SP2T16, and SP4T2 and SP4T4 in branch 2 are connected to the direct-through function of switch No. 1, and SP2T10 and SP2T12 are connected to the 1dB step attenuation function of switch No. 2.

Claims

1. A program-controlled multi-channel microwave device switching device, characterized in that it includes: The external frame box and the internal microwave device link, the front panel of the external frame box is provided with two signal input ports, two signal output ports and a touch screen operation panel, wherein the signal input port A is two SMA ports, directly connected to the test instrument, and the signal output port B is two N-type RF ports, used to connect to the device under test; the signal port A and port B are both input or output ports; The internal microwave device link structure is connected in a switch cascade mode and consists of two microwave device switching branches. Two splitters and two combiners are set at both ends of the link A and B. By controlling the on and off of the single-pole single-throw switch SPST at both ends of the link: the input signal splitting and input signal combining functions are realized; the output signal splitting and output signal combining functions are realized; The microwave device switching branch includes signal amplification, signal attenuation and signal filtering nodes; The signal amplification node is equipped with two amplification modules with opposite directions according to the different signal input directions. The selection of the amplification module is achieved by controlling the connection of the single-pole double-throw switch SP2T to realize the through- and amplification functions of each switch. The signal attenuation node is provided with 10dB and 1dB step attenuation modules. The selection of the 10dB step attenuation module is controlled by controlling the single-pole double-throw switches SP2T5 and SP2T7, SP2T6 and SP2T8. The selection of the step 1dB attenuation module is controlled by controlling the single-pole double-throw switches SP2T9 and SP2T11, SP2T10 and SP2T12. When connected to respective No. 1 switches, each switch selects the pass-through function. When connected to No. 2 switches, each switch selects the 10dB step attenuation function or the 1dB step attenuation function. The signal filtering node is equipped with three low-pass filtering modules of 300MHz, 1GHz and 2.4GHz. The module selection is realized by controlling the connection of the single-pole four-throw switch SP4T. When the single-pole four-throw switches SP4T1 and SP4T3, SP4T2 and SP4T4 are connected to their respective switch No. 1, each switch selects the pass-through function; when connected to their respective switch No. 2, each switch selects the 300MHz low-pass filtering function; when connected to their respective switch No. 3, each switch selects the 1GHz low-pass filtering function; when connected to their respective switch No. 4, each switch selects the 2.4GHz low-pass filtering function.

2. The method for developing a program-controlled multi-channel microwave device switching device according to claim 1, characterized in that: include: Select signal input port, select control working mode, and build microwave device switching link; 1) Signal input port selection: select "A-end input" or "B-end input" according to the signal input direction. When the conditioned signal is output from the test instrument, select "A-end input", and when it is output from the device under test, select "B-end input"; 2) Select the working mode of the control software. The control software has four working modes: "single input single output", "single input dual output", "dual input single output" and "dual input dual output". Select according to the actual signal conditioning requirements; 3) Build a microwave device switching link. The signal conditioning link construction frame is used to build a microwave device switching link under different working conditions and to configure the signal conditioning function in detail; The microwave device switching link construction is equipped with signal attenuation, signal filtering, signal amplification and link conditioning modules, among which the attenuation range of the signal attenuation module is 70dB, and the attenuation step is set to 1dB or 10dB; the signal filtering module has three configurable frequency band low-pass filtering functions of 300MHz, 1GHz and 2.4GHz; the signal amplification module can achieve a module gain of 20dB by configuring an equalizer; the link conditioning module has three modes of combining, splitting and direct-through. The splitters and combiners are set at both ends of the switching link to realize the signal splitting and combining modes. In addition, direct-through links are set in each functional module to realize the signal direct-through function; The steps to realize the microwave device switching function are as follows: the first step is to select the signal input port, the second step is to select the software working mode required for the microwave device switching, and the third step is to configure the required functional modules in the microwave device switching link construction; the microwave device switching function in each working mode is realized as follows: (1) "Single-input single-output" working mode refers to a working mode in which a single signal is input into the microwave device switching device and a single signal is output after the microwave device signal is conditioned; the switches SPST2, SPST3, SPST4, SPST9 and SPST10 are controlled to be disconnected to generate a "single-input single-output" mode microwave device signal conditioning hardware connection link, and the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1 and SP4T3 are controlled to realize the hardware configuration of the microwave device switching link function module; (2) "Single-input dual-output" means that a single signal is input into the microwave switching device, and two signals are output after the microwave signal is conditioned. In the "single-input dual-output" mode, two states are distinguished: "divide first and modulate later" and "modulate first and divide later". 1) "Divide first, modulate later" state. "Divide first, modulate later" means that after the signal is input from the input end, it is connected to the splitter to be divided into two signals. The two signals are conditioned by microwave devices and then output from the output end. Select "Divide first, modulate later" in the "Single Input, Double Output" mode. In the two-way microwave device switching link, click "OK" and the signal flow arrow automatically connects each module. Control the on and off of the internal switch of the microwave device switching device to start the signal conditioning of the "Single Input, Double Output" mode under the "Divide first, modulate later" condition. Control the SPST2, SPST4, SPST9 and SPST10 switches to be disconnected and the SPST3 switch to be connected, resulting in "Single Input, Double Output". The microwave device signal conditioning hardware connection link in the "divide first, modulate later" mode controls the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1, SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2, SP4T4 in branch 2, to realize the hardware configuration of each functional module of the microwave device switching link; 2) "Adjust before splitting" state, "Adjust before splitting" means that after a single signal is input from the input port, it is conditioned by the microwave device, and the conditioned signal is connected to the splitter to be split into two signals and output from the output port; select "Adjust before splitting" in the "Single-input, dual-output" mode, configure various functional controls in a single microwave device switching link, click "OK" and the signal automatically connects to each module, controls the on and off of the internal switch of the microwave device switching device, starts the signal conditioning in the "Single-input, dual-output" mode in the "Adjust before splitting" state, controls the SPST3, SPST4, SPST8 and SPST10 switches to be disconnected and the SPST9 switch to be connected, generates the microwave device signal conditioning hardware connection link in the "Single-input, dual-output" mode in the "Adjust before splitting" state, controls the connection of the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1, SP4T3, and realizes the hardware configuration of the microwave device switching link function module; (3) "Dual-input, single-output" working mode refers to the working mode in which two signals are input into the microwave device switching device and a single signal is output after signal conditioning. In the "dual-input, single-output" mode, two states are distinguished: "close first and then adjust" and "adjust first and then close". 1) "First combine, then adjust" state, "first combine, then adjust" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal, and this signal is output from the output end after being conditioned by the microwave device; select "First combine, then adjust" in the "Dual input and single output" mode, configure various function controls in a single microwave device switching link, click "OK" and the signal automatically connects to each module, controls the on and off of the internal switch of the microwave device switching device, starts the signal conditioning of the "Dual input and single output" mode in the "First combine, then adjust" state, controls the SPST3, SPST6, SPST9 and SPST10 switches to be disconnected and the SPST4 switch to be connected, generates the microwave device signal conditioning hardware connection link in the "Dual input and single output" mode in the "First combine, then adjust" state, controls the connection of the single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and the single-pole four-throw switches SP4T1, SP4T3, and realizes the hardware configuration of the microwave device switching link function module; 2) "Adjust before closing" state: "Adjust before closing" means that after two signals are input from the input end, they are conditioned by microwave devices respectively, and the conditioned two signals are connected to the combiner to form one signal output from the output end; select "Adjust before closing" in the "Dual Input Single Output" mode, configure the function controls of each link in the two microwave device switching links respectively, click "OK" and the signal automatically connects each module, controls the on and off of the internal switch of the microwave device switching device, and starts the signal conditioning of the "Dual Input Single Output" mode in the "Adjust before closing" state, controls the SPST3, SPST4 and SPST9 switches to be disconnected and the SPST10 switch to be connected, and generates "Dual Input Single Output" mode. The microwave device signal conditioning hardware connection link in the "adjust before closing" state in the "single-input and single-output" mode controls the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1 and SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2 and SP4T4 in branch 2, to realize the hardware configuration of each functional module of the microwave device switching link; (4) "Dual-input, dual-output" working mode refers to the working mode in which two signals are input into the microwave device switching device and two signals are output after signal conditioning. The "dual-input, dual-output" mode distinguishes between "direct conditioning" and "combined conditioning" states; 1) "Direct conditioning" state, "direct conditioning" means that after two signals are input from the two ports of the input end, they are respectively conditioned by the microwave device, and the conditioned two signals are directly output from the two ports of the output end; select "direct conditioning" in the "dual input and dual output" mode, configure the function controls of each link in the two microwave device switching links, click "OK" and the signal automatically connects to each module, and the background controls the on and off of the internal switch of the microwave device switching device, starting the signal conditioning in the "dual input and dual output" mode in the "direct conditioning" state, controlling the SPST3, SPST4, SPST9 and SPST10 switches to be disconnected, generating "dual input and dual output" mode. The microwave device signal conditioning hardware connection link in the "dual-output" mode in the "direct conditioning" state controls the connection between the single-pole double-throw switches SP2T1, SP2T3, SP2T5, SP2T7, SP2T9, SP2T11, SP2T13, SP2T15 and the single-pole four-throw switches SP4T1, SP4T3 in branch 1, and the connection between SP2T2, SP2T4, SP2T6, SP2T8, SP2T10, SP2T12, SP2T14, SP2T16 and the single-pole four-throw switches SP4T2, SP4T4 in branch 2, to realize the hardware configuration of each functional module of the microwave device switching link; 2) "Merge and Condition" state. "Merge and Condition" means that after two signals are input from the two ports of the input end, they are connected to the combiner to form one signal. After the signal is conditioned by the microwave device, it is connected to the splitter. The two signals formed are output from the two ports of the output end respectively. Select "Merge and Condition" in "Dual Input and Dual Output" mode, configure each function control in a single microwave device switching link, click "OK" and the signal will automatically connect to each module. The background controls the on and off of the internal switch of the microwave device switching device, and the "Dual Input and Dual Output" mode in the "Merge and Condition" state starts. Signal conditioning, controls the SPST3, SPST6, SPST8 and SPST10 switches to be disconnected and the SPST4 and SPST9 switches to be connected, generates the microwave device signal conditioning hardware connection link in the "dual-input and dual-output" mode in the "merged conditioning" state, controls the connection of single-pole double-throw switches SP2T1, SP2T3, SP2T4, SP2T7, SP2T9, SP2T11, SP2T13 and single-pole four-throw switches SP4T1, SP4T3, and realizes the hardware configuration of the microwave device switching link function module.

3. A method for developing program-controlled multi-channel microwave device switching according to claim 2, characterized in that: The "single input dual output" mode meets the test requirement of splitting a single signal into two different signals in the "divide first and modulate later" state. Port A1 is connected to the signal source to access the input signal, and ports B1 and B2 are respectively connected to different devices under test to output the conditioned signal; start the control, click the "A-end input" control, click "single input dual output" and select the "divide first and modulate later" state, and the signal conditioning link construction box displays two microwave device switching branches, select port A1, branch 1 is configured with 10dB step attenuation, 300MHz low-pass filter and 20dB amplifier module, and branch 2 is only configured with 1dB step attenuation; after clicking the "OK" control, the switch connection is driven, and the port A1 input signal is used in the "divide first and modulate later" case, and SPST2, SPST4, SPST9 and The SPST10 switch is connected to the SPST3 switch to realize the working mode; according to the switching link function configuration of the microwave device: SP2T1 and SP2T3, SP2T9 and SP2T11 in branch 1 are connected to the direct-through function of switch No. 1, SP2T5 and SP2T7 are connected to the 10dB step attenuation function of switch No. 2, SP4T1 and SP4T3 are connected to the 300MHz low-pass filtering function of switch No. 2, SP2T13 and SP2T15 are connected to the 20dB amplification function of switch No. 2, SP2T2 and SP2T4, SP2T6 and SP2T8, SP2T14 and SP2T16, and SP4T2 and SP4T4 in branch 2 are connected to the direct-through function of switch No. 1, and SP2T10 and SP2T12 are connected to the 1dB step attenuation function of switch No. 2.

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