A radio station sensitivity test auxiliary device and a method of using the same

Abstract

The application provides a radio station sensitivity test auxiliary device and a use method thereof. The auxiliary device comprises a first access unit, a second access unit, a control unit, a mixing unit, a local oscillator unit, a first switch unit and a second switch unit. Two kinds of communication modes are included between the first switch unit and the second switch unit. The first communication mode is to directly connect the first switch unit and the second switch unit, and the second communication mode is to connect the first switch unit and the second switch unit through the mixing unit. The control unit is connected with the first switch unit, the second switch unit, the first access unit, the second access unit and the local oscillator unit, and is used for switching the communication mode of the first switch unit and the second switch unit to realize the switching of the test mode, setting the attenuation values of the first access unit and the second access unit and setting the frequency value of the local oscillator signal. The radio station sensitivity test auxiliary device is used for radio station sensitivity test, and four kinds of test modes are included.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radio station test, in particular to a radio station sensitivity test auxiliary device and a use method thereof. BACKGROUND

[0002] At present, the radio station integrates more and more waveform patterns, and no test link can completely and effectively realize the sensitivity test of various waveforms, so when the radio station sensitivity test is carried out, the test link needs to be disassembled and built, and a large amount of time needs to be consumed in the test link building work. Meanwhile, the adjustable attenuator, the mixing unit and the signal source instrument are of many types and large in size, which are inconvenient to carry and use in the field. SUMMARY

[0003] The present application aims to solve at least one of the technical problems in the prior art that there is a lack of a universal radio station sensitivity test auxiliary device, the existing test link needs to be frequently disassembled and built for testing different waveform pattern radios, which is inconvenient to use and complex to operate, and large in size.

[0004] To this end, the present application provides a radio station sensitivity test auxiliary device in the first aspect.

[0005] The present application provides a use method of a radio station sensitivity test auxiliary device in the second aspect.

[0006] The present application provides a radio station sensitivity test auxiliary device, which comprises a first access unit, a second access unit, a control unit, a mixing unit, a local oscillator unit, a first switch unit and a second switch unit.

[0007] The first access unit accesses one end of a transmitting end and a receiving end, is used for attenuating signals transmitted in the link, and provides a mixing unit output signal power measurement interface and an attenuation value metering interface, and is connected with the first switch unit.

[0008] The second access unit accesses the other end of the receiving end and the transmitting end, is used for attenuating signals transmitted in the link, and provides a mixing unit output signal power measurement interface and an attenuation value metering interface, and is connected with the second switch unit.

[0009] The first switch unit and the second switch unit comprise two communication modes: the first communication mode is to directly connect the first switch unit and the second switch unit, and the second communication mode is to connect the first switch unit and the second switch unit through the mixing unit.

[0010] The local oscillator unit is used for generating a local oscillator signal and is connected with the mixing unit to transmit the local oscillator signal to the mixing unit.

[0011] The mixing unit is used for mixing the signal input into the mixing unit from one of the first access unit and the second access unit with the local oscillator signal, and outputting to the other of the first access unit and the second access unit.

[0012] The control unit is connected with the first switch unit, the second switch unit, the first access unit, the second access unit and the local oscillator unit respectively, and is used for switching the communication mode of the first switch unit and the second switch unit to realize the switching of the test mode, setting the attenuation values of the first access unit and the second access unit and setting the frequency value of the local oscillator signal.

[0013] According to the auxiliary device for testing sensitivity of a radio station, the following additional technical features can be further provided.

[0014] In the above technical solution, the first switch unit comprises a first single-pole double-throw switch, and the second switch unit comprises a second single-pole double-throw switch.

[0015] The first access unit is connected with a common terminal of the first single-pole double-throw switch, one non-common terminal of the first single-pole double-throw switch is connected with one end of the mixing unit, the other end of the mixing unit is connected with one non-common terminal of the second single-pole double-throw switch, the other non-common terminal of the first single-pole double-throw switch is connected with the other non-common terminal of the second single-pole double-throw switch, and the common terminal of the second single-pole double-throw switch is connected with the second access unit.

[0016] In the above technical solution, the transmitting end comprises an exciter in a transmitting state and a radio station under test in a transmitting state; and the receiving end comprises a radio station under test in a receiving state.

[0017] In the above technical solution, the first access unit comprises a first radio frequency connector, a first digital control attenuator and a first double directional coupler.

[0018] The transmitting end or the receiving end is connected with one end of the first radio frequency connector, the other end of the first radio frequency connector is connected with one end of the first digital control attenuator, the other end of the first digital control attenuator is connected with one end of the first double directional coupler, and the other end of the first double directional coupler is connected with the first switch unit.

[0019] The first digital control attenuator is used for realizing the attenuation of the signal in the first access unit link by means of digital control.

[0020] The forward sampling port of the first double directional coupler is used for sampling the power of the output signal of the mixing unit, and the reverse sampling port is used for measuring the attenuation value of the first digital control attenuator.

[0021] In the technical scheme, the second access unit comprises a second radio frequency connector, a second digital control attenuator and a second double directional coupler.

[0022] The transmitting end or the receiving end is connected with one end of the second radio frequency connector, the other end of the second radio frequency connector is connected with one end of the second digital control attenuator, the other end of the second digital control attenuator is connected with one end of the second double directional coupler, and the other end of the second double directional coupler is connected with the second switch unit.

[0023] The second digital control attenuator is used for attenuating the signal in the first access unit link in a digital control manner.

[0024] The forward sampling port of the second double directional coupler is used for power sampling of the output signal size of the mixing unit, and the reverse sampling port is used for attenuating value metering of the first digital control attenuator.

[0025] The application further provides a use method of the radio station sensitivity test auxiliary device, and the radio station sensitivity test is carried out by using the radio station sensitivity test auxiliary device according to any one of the technical schemes.

[0026] When the transmitting end is an exciter, the receiving end is a measured radio station, and the frequency difference between the exciter and the measured radio station can be determined, the first fixed-frequency test mode is adopted.

[0027] When the transmitting end is an exciter, the receiving end is a measured radio station, and the frequency difference between the exciter and the measured radio station cannot be determined, the second non-fixed-frequency test mode is adopted.

[0028] When the transmitting end is a measured radio station, the receiving end is another measured radio station, and the frequency difference between the two measured radio stations can be determined, the third fixed-frequency test mode is adopted.

[0029] When the transmitting end is a measured radio station, the receiving end is another measured radio station, and the frequency difference between the two measured radio stations cannot be determined, the fourth non-fixed-frequency test mode is adopted.

[0030] In the technical scheme, the first fixed-frequency test mode comprises the following steps:

[0031] S1, the second switch unit is connected with the first switch unit in the second communication mode;

[0032] S2, the frequency value F1 of the output signal of the local oscillator unit is set, and the attenuation values of the first access unit and the second access unit are set to 0;

[0033] S3, the frequency points of the exciter and the measured radio station are set respectively, the frequency difference between the exciter and the measured radio station is F1, the exciter enters the transmitting state and is connected with the first access unit, and the measured radio station enters the receiving state and is connected with the second access unit.

[0034] S4, connecting the mixing unit output signal power measuring interface of the second access unit with the measuring device, and reading the measuring device reading;

[0035] S5, gradually increasing the attenuation value of the second access unit until the signal of the measured radio station reaches the receiving sensitivity state, and recording the attenuation value at this time;

[0036] S6, calculating the sensitivity of the measured radio station.

[0037] In the above technical solution, the second non-fixed frequency test mode comprises the following steps:

[0038] S1, adopting the first communication mode between the first switch unit and the second switch unit;

[0039] S2, setting the attenuation values of the first access unit and the second access unit to 0;

[0040] S3, setting the operating frequency points of the exciter and the measured radio station respectively, so that the exciter and the measured radio station have the same frequency, the exciter enters the transmitting state and accesses the first access unit, and the measured radio station enters the receiving state and accesses the second access unit;

[0041] S4, connecting the mixing unit output signal power measuring interface of the second access unit with the measuring device, and reading the measuring device reading;

[0042] S5, gradually increasing the attenuation value of the second access unit until the signal of the measured radio station reaches the receiving sensitivity state, and recording the attenuation value at this time;

[0043] S6, calculating the sensitivity of the measured radio station.

[0044] In the above technical solution, the third fixed frequency test mode comprises the following steps:

[0045] S1, adopting the second communication mode between the first switch unit and the second switch unit;

[0046] S2, setting the output signal frequency value F1 of the local oscillator unit, and setting the attenuation values of the first access unit and the second access unit to 0;

[0047] S3, setting the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency difference between the first measured radio station and the second measured radio station is F1, the first measured radio station enters the transmitting state and accesses the first access unit, and the second measured radio station enters the receiving state and accesses the second access unit;

[0048] S4, connecting the mixing unit output signal power measuring interface of the second access unit with the measuring device, and reading the measuring device reading;

[0049] S5, gradually increase the attenuation value of the second access unit until the second measured radio signal reaches the receiving sensitivity state, and record the attenuation value at this time;

[0050] S6, calculate the second measured radio sensitivity;

[0051] S7, set the operating frequency points of the first measured radio and the second measured radio respectively, so that the frequency difference between the first measured radio and the second measured radio is F1, the first measured radio enters the receiving state and accesses the first access unit, and the second measured radio enters the transmitting state and accesses the second access unit;

[0052] S8, connect the mixing unit output signal power measurement interface of the first access unit to the measuring device, and read the reading of the measuring device;

[0053] S9, gradually increase the attenuation value of the first access unit until the first measured radio signal reaches the receiving sensitivity state, and record the attenuation value at this time;

[0054] S10, calculate the first measured radio sensitivity.

[0055] In the above technical solution, the fourth non-fixed frequency test mode includes the following steps:

[0056] S1, adopt the first communication mode between the first switch unit and the second switch unit;

[0057] S2, set the attenuation values of the first access unit and the second access unit to 0;

[0058] S3, set the operating frequency points of the first measured radio and the second measured radio respectively, so that the frequency of the first measured radio and the second measured radio is the same, the first measured radio enters the transmitting state and accesses the first access unit, and the second measured radio enters the receiving state and accesses the second access unit;

[0059] S4, connect the mixing unit output signal power measurement interface of the second access unit to the measuring device, and read the reading of the measuring device;

[0060] S5, gradually increase the attenuation value of the second access unit until the second measured radio signal reaches the receiving sensitivity state, and record the attenuation value at this time;

[0061] S6, calculate the second measured radio sensitivity;

[0062] S7, set the operating frequency points of the first measured radio and the second measured radio respectively, so that the frequency of the first measured radio and the second measured radio is the same, the first measured radio enters the receiving state and accesses the first access unit, and the second measured radio enters the transmitting state and accesses the second access unit;

[0063] S8, connect the mixing unit output signal power measurement interface of the first access unit with the measuring device, and read the measuring device reading;

[0064] S9, gradually increase the attenuation value of the first access unit until the signal of the first measured radio station reaches the receiving sensitivity state, and record the attenuation value at this time;

[0065] S10, calculate the sensitivity of the first measured radio station.

[0066] Therefore, the present application has the following beneficial effects due to the adoption of the above technical features:

[0067] The radio station sensitivity test auxiliary device provided by the present application only needs to change the mode of the radio station sensitivity test auxiliary device without disassembling the test link to realize the sensitivity test of all modes of the measured radio station.

[0068] The radio station sensitivity test auxiliary device provided by the present application only needs to change the mode of the radio station sensitivity test auxiliary device without disassembling the test link to realize the sensitivity test of all modes of the measured radio station.

[0069] The integrated setting is convenient to use, convenient to transport, convenient to adjust, and has good practical value.

[0070] The additional aspects and advantages of the present application will become apparent from the following description part, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0071] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0072] Figure 1 is a system diagram of a radio station sensitivity test auxiliary device according to an embodiment of the present application;

[0073] Figure 2 is a module diagram of a radio station sensitivity test auxiliary device according to an embodiment of the present application;

[0074] Figure 3 is a link diagram of a radio station sensitivity test auxiliary device switched to a first fixed frequency test mode according to an embodiment of the present application;

[0075] Figure 4 is a link diagram of a radio station sensitivity test auxiliary device switched to a second non-fixed frequency test mode according to an embodiment of the present application;

[0076] Figure 5 is a link diagram of a radio station sensitivity test auxiliary device switched to a third fixed frequency test mode according to an embodiment of the present application;

[0077] Figure 6 Figure 4 is a link diagram showing a radio sensitivity test auxiliary device switching to a fourth non-fixed frequency test mode according to an embodiment of the present application. DETAILED DESCRIPTION

[0078] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0079] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other different ways from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0080] The radio sensitivity test auxiliary device and the method of using the same according to some embodiments of the present application will be described below with reference to the accompanying drawings. Figures 1 to 6

[0081] Some embodiments of the present application provide a radio sensitivity test auxiliary device.

[0082] As shown in Figures 1 to 6 Figure 1, a first embodiment of the present application proposes a radio sensitivity test auxiliary device, which comprises a first access unit, a second access unit, a control unit, a mixing unit, a local oscillator unit, a first switch unit and a second switch unit.

[0083] The first access unit accesses one end of a transmitting end and a receiving end, is used for attenuating signals transmitted in a link, and provides a mixing unit output signal power measurement interface and an attenuation value metering interface, and is connected with the first switch unit.

[0084] The second access unit accesses the other end of the receiving end and the transmitting end, is used for attenuating signals transmitted in the link, and provides the mixing unit output signal power measurement interface and the attenuation value metering interface, and is connected with the second switch unit.

[0085] When the first access unit accesses the transmitting end, the second access unit accesses the receiving end; when the first access unit accesses the receiving end, the second access unit accesses the transmitting end; the first access unit and the second access unit realize attenuation of signals in the link by setting an attenuator, the attenuator is an adjustable attenuator, and the adjustment mode can be manual adjustment or numerical control adjustment. The mixing unit output signal power measurement interface and the attenuation value metering interface are provided by a coupler arranged in the first access unit and the second access unit.

[0086] ​The first switch unit and the second switch unit include two communication modes: the first communication mode is to directly connect the first switch unit and the second switch unit, and the second communication mode is to connect the first switch unit and the second switch unit through the mixing unit;

[0087] The first switch unit and the second switch unit can each be provided with two switches, the two switches of the first switch unit correspond to the two switches of the second switch unit one by one, and the switching of the communication mode is realized by controlling the connection of the switches; or single-pole double-throw switches can be respectively used, and the switching of the communication mode is realized by switching the single-pole double-throw switches;

[0088] The local oscillator unit is used to generate a local oscillator signal and is connected with the mixing unit to transmit the local oscillator signal to the mixing unit;

[0089] The mixing unit is used to mix the signal input into the mixing unit from one of the first access unit and the second access unit with the local oscillator signal and output to the other of the first access unit and the second access unit;

[0090] When the first access unit accesses the transmitting end, the mixing unit is used to mix the output signal of the first access unit with the local oscillator signal and send to the input end of the second access unit; when the second access unit accesses the transmitting end, the mixing unit is used to mix the output signal of the second access unit with the local oscillator signal and send to the input end of the first access unit.

[0091] The control unit is connected with the first switch unit, the second switch unit, the first access unit, the second access unit and the local oscillator unit respectively, and is used to switch the communication mode of the first switch unit and the second switch unit to realize the switching of the test mode, set the attenuation values of the first access unit and the second access unit and set the frequency value of the local oscillator signal.

[0092] The power supply unit is connected with each unit in the auxiliary device and is used to supply power to each module.

[0093] The second embodiment of the application proposes a radio sensitivity test auxiliary device, and on the basis of the first embodiment, as shown in Figures 1 to 6 The first switch unit includes a first single-pole double-throw switch, and the second switch unit includes a second single-pole double-throw switch;

[0094] The first access unit is connected with the common end of the first single-pole double-throw switch, one non-common end of the first single-pole double-throw switch is connected with one end of the mixing unit, the other end of the mixing unit is connected with one non-common end of the second single-pole double-throw switch, the other non-common end of the first single-pole double-throw switch is connected with the other non-common end of the second single-pole double-throw switch, and the common end of the second single-pole double-throw switch is connected with the second access unit.

[0095] The transmitting end comprises an exciter in a transmitting state and a measured radio station in a transmitting state; and the receiving end comprises a measured radio station in a receiving state.

[0096] The first access unit comprises a first radio frequency connector, a first digital control attenuator and a first double directional coupler.

[0097] The transmitting end or the receiving end is connected to one end of the first radio frequency connector, the other end of the first radio frequency connector is connected to one end of the first digital control attenuator, the other end of the first digital control attenuator is connected to one end of the first double directional coupler, and the other end of the first double directional coupler is connected to the first switch unit.

[0098] The first digital control attenuator is used to realize the attenuation of the signal in the first access unit link in a digital control manner.

[0099] The forward sampling port of the first double directional coupler is used for power sampling of the output signal size of the mixing unit, and the reverse sampling port is used for attenuation value metering of the first digital control attenuator.

[0100] Wherein, the forward direction refers to the direction from the transmitting end to the receiving end, and the reverse direction refers to the direction from the receiving end to the transmitting end, and the same applies below.

[0101] The second access unit comprises a second radio frequency connector, a second digital control attenuator and a second double directional coupler.

[0102] The transmitting end or the receiving end is connected to one end of the second radio frequency connector, the other end of the second radio frequency connector is connected to one end of the second digital control attenuator, the other end of the second digital control attenuator is connected to one end of the second double directional coupler, and the other end of the second double directional coupler is connected to the second switch unit.

[0103] The second digital control attenuator is used to realize the attenuation of the signal in the first access unit link in a digital control manner.

[0104] The forward sampling port of the second double directional coupler is used for power sampling of the output signal size of the mixing unit, and the reverse sampling port is used for attenuation value metering of the first digital control attenuator.

[0105] The third embodiment of the present application provides a radio station sensitivity test auxiliary device, and on the basis of any of the above embodiments, such as Figures 1 to 6As shown, the mixing unit includes a mixer, such as HSP1113; the local oscillator unit includes a local oscillator source; the first access unit and the second access unit are of the same type of double directional coupler, such as DDTO-1-4; the first access unit and the second access unit are of the same type of digital attenuator, such as DC-3GHZ-90DB-V3; the power supply unit includes a power supply module, such as D-30-A; the first single-pole double-throw switch and the second single-pole double-throw switch are of the same type, such as SHX1011;

[0106] The control unit includes a display control communication module connected to the program control port of the upper computer, and the control instructions are transmitted to the auxiliary device through the control interface of the upper computer by remote communication. The display control communication module is used to set the attenuation value of the first digital attenuator and the second digital attenuator, the output frequency value of the local oscillator signal of the local oscillator source, and the switching of the test mode by controlling the communication mode of the first single-pole double-throw switch and the second single-pole double-throw switch.

[0107] Specifically, as shown in the figure Figure 1 The radio sensitivity test auxiliary device includes a mixer, a local oscillator source, a first double directional coupler, a second double directional coupler, a first digital attenuator, a second digital attenuator, a power supply module, a first single-pole double-throw switch, a second single-pole double-throw switch, and a display control communication module. The first digital attenuator is connected to the first RF connector RF1 port at one end and to the first double directional coupler output end at the other end. The first digital attenuator attenuation value control signal end is connected to the display control communication module control signal end.

[0108] The first double directional coupler output end is connected to the first digital attenuator one end, the first double directional coupler input end is connected to the common end of the first single-pole double-throw switch, the first double directional coupler forward coupling end is connected to the RF1_sample end, and the first double directional coupler reverse coupling end is connected to the Atten1_sample end.

[0109] The common end of the first single-pole double-throw switch is connected to the input end of the first double directional coupler, one non-common end of the first single-pole double-throw switch is connected to the non-local oscillator end of the mixer, the other non-common end of the first single-pole double-throw switch is connected to one non-common end of the second single-pole double-throw switch, and the control end of the first single-pole double-throw switch is connected to the control signal end of the display control communication module.

[0110] The local oscillator end of the mixer is connected to the output end of the local oscillator source, the input end of the mixer is connected to one non-common end of the first single-pole double-throw switch, and the output end of the mixer is connected to one non-common end of the second single-pole double-throw switch.

[0111] The common end of the second single-pole double-throw switch is connected with the second double-directional coupler input end, one non-common end of the second single-pole double-throw switch is connected with the non-local oscillator end of the mixer, another non-common end of the second single-pole double-throw switch is connected with one non-common end of the first single-pole double-throw switch, and the control end of the second single-pole double-throw switch is connected with the control signal end of the display control communication module.

[0112] The second double-directional coupler output end is connected with one radio frequency end of the second digital control attenuator, the second double-directional coupler input end is connected with the common end of the second single-pole double-throw switch, the forward coupling end of the first double-directional coupler is connected with the RF2_sample end, and the reverse coupling end of the second double-directional coupler is connected with the Atten2_sample end.

[0113] One radio frequency end of the second digital control attenuator is connected with the second radio frequency connector RF2 port, another radio frequency end is connected with the second double-directional coupler output end, and the attenuation value control signal end of the second digital control attenuator is connected with the control signal end of the display control communication module.

[0114] The input end of the power module is connected with the AC220V input port of the device, one 5V output is connected with the power supply input end of the first digital control attenuator, one 5V output is connected with the power supply input end of the second digital control attenuator, one 5V output is connected with the power supply input end of the local oscillator source, and one 5V output is connected with the power supply input end of the display control communication module.

[0115] The display control communication module comprises a master control execution board and a display control communication module.

[0116] The master control execution board is connected with the display control communication module through RS232, accepts instructions from the display control communication module and executes.

[0117] The master control execution board is connected with the first digital control attenuator and the second digital control attenuator through discrete lines, receives attenuation values from the display control communication module, converts the attenuation values into corresponding TTL levels, and controls the attenuation values of the first digital control attenuator and the second digital control attenuator.

[0118] The master control execution board is connected with the control ends of the first single-pole double-throw switch and the second single-pole double-throw switch through discrete lines, receives test mode from the display control communication module, and realizes selection of switch paths of the first single-pole double-throw switch and the second single-pole double-throw switch.

[0119] Some embodiments of the present application provide a use method of the radio station sensitivity test auxiliary device.

[0120] The fourth embodiment of the present application provides a use method of the radio station sensitivity test auxiliary device, and on the basis of any one of the above embodiments, such as Figures 1 to 6As shown, the radio sensitivity test auxiliary device for testing the radio sensitivity according to any one of the above embodiments includes four test modes:

[0121] When the transmitting end is the exciter, the receiving end is the measured radio station, and the frequency difference between the exciter and the measured radio station can be determined, the first fixed-frequency test mode is adopted;

[0122] When the transmitting end is the exciter, the receiving end is the measured radio station, and the frequency difference between the exciter and the measured radio station cannot be determined, the second non-fixed-frequency test mode is adopted;

[0123] When the transmitting end is the measured radio station, the receiving end is another measured radio station, and the frequency difference between the two measured radio stations can be determined, the third fixed-frequency test mode is adopted;

[0124] When the transmitting end is the measured radio station, the receiving end is another measured radio station, and the frequency difference between the two measured radio stations cannot be determined, the fourth non-fixed-frequency test mode is adopted.

[0125] The fifth embodiment of the present application proposes a radio sensitivity test auxiliary device, and on the basis of any one of the above embodiments, as shown, Figures 1 to 6 The first fixed-frequency test mode includes the following steps:

[0126] S1, according to the link connection, the second communication mode is adopted between the first switch unit and the second switch unit; Figure 3

[0127] S2, set the frequency value F1 of the local oscillator unit output signal, and set the attenuation values of the first digital attenuator and the second digital attenuator to 0;

[0128] S3, set the working frequency points of the exciter and the measured radio station respectively, so that the frequency difference between the exciter and the measured radio station is F1, the exciter enters the transmitting state and is connected to the first radio frequency connector through the first high-power attenuator, and the measured radio station enters the receiving state and is connected to the second radio frequency connector through the second high-power attenuator;

[0129] S4, connect the mixing unit output signal power measurement interface of the second directional coupler to the measuring device, and read the reading of the measuring device; the measuring device is a spectrum analyzer or a power meter;

[0130] S5, gradually increase the attenuation value of the second digital attenuator until the signal of the measured radio station reaches the receiving sensitivity state, and record the attenuation value of the second digital attenuator at this time;

[0131] S6, combine the readings of the spectrum analyzer or the power meter, the coupling value of the second double directional coupler, the attenuation value of the second digital attenuator, and the attenuation value of the second high-power attenuator to calculate the sensitivity of the measured radio station. ​

[0132] The second non-fixed frequency test mode comprises the following steps:

[0133] S1, link connection is performed according to the figure, so that the first switch unit and the second switch unit adopt the first communication mode; and the frequency mixer is bypassed; Figure 4

[0134] S2, the attenuation values of the first digital attenuator and the second digital attenuator are set to 0;

[0135] S3, the operating frequency points of the exciter and the measured radio station are set respectively, so that the frequencies of the exciter and the measured radio station are the same, the exciter enters a transmitting state and is connected to the first radio frequency connector through the first high-power attenuator, and the measured radio station enters a receiving state and is connected to the second radio frequency connector through the second high-power attenuator;

[0136] S4, the output signal power measurement interface of the second directional coupler is connected to the measuring device, and the reading of the measuring device is read; the measuring device is a spectrum analyzer or a power meter;

[0137] S5, the attenuation value of the second digital attenuator is gradually increased until the signal of the measured radio station reaches the receiving sensitivity state, and the attenuation value of the second digital attenuator at this time is recorded;

[0138] S6, the sensitivity of the measured radio station is calculated in combination with the readings of the spectrum analyzer or the power meter, the coupling value of the second double directional coupler, the attenuation value of the second digital attenuator, and the attenuation value of the second high-power attenuator.

[0139] The third fixed frequency test mode comprises the following steps:

[0140] S1, link connection is performed according to the figure, so that the first switch unit and the second switch unit adopt the second communication mode; Figure 5

[0141] S2, the output signal frequency value F1 of the local oscillator unit is set, and the attenuation values of the first digital attenuator and the second digital attenuator are set to 0;

[0142] S3, the operating frequency points of the first measured radio station and the second measured radio station are set respectively, so that the frequency difference between the first measured radio station and the second measured radio station is F1, the first measured radio station enters a transmitting state and is connected to the first radio frequency connector through the first high-power attenuator, and the second measured radio station enters a receiving state and is connected to the second radio frequency connector through the second high-power attenuator;

[0143] S4, the output signal power measurement interface of the second directional coupler is connected to the measuring device, and the reading of the measuring device is read; the measuring device is a spectrum analyzer or a power meter;

[0144] ​​S5, gradually increase the attenuation value of the second digital attenuator until the second measured radio signal reaches the receiving sensitivity state, and record the attenuation value of the second digital attenuator at this time;

[0145] S6, combine the spectrum analyzer or power meter reading, the second double directional coupler coupling value, the attenuation value of the second digital attenuator, and the attenuation value of the second high-power attenuator to calculate the sensitivity of the second measured radio station.

[0146] S7, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency difference between the first measured radio station and the second measured radio station is F1, the first measured radio station enters the receiving state and is connected to the first radio frequency connector through the first high-power attenuator, and the second measured radio station enters the transmitting state and is connected to the second radio frequency connector through the second high-power attenuator.

[0147] S8, connect the mixing unit output signal power measurement interface of the first directional coupler to the measuring device, and read the measuring device reading; the measuring device is a spectrum analyzer or a power meter.

[0148] S9, gradually increase the attenuation value of the first digital attenuator until the first measured radio signal reaches the receiving sensitivity state, and record the attenuation value of the first digital attenuator at this time.

[0149] S10, combine the spectrum analyzer or power meter reading, the coupling value of the first double directional coupler, the attenuation value of the first digital attenuator, and the attenuation value of the first high-power attenuator to calculate the sensitivity of the first measured radio station.

[0150] The fourth non-fixed frequency test mode includes the following steps:

[0151] S1, according to the link connection shown in Figure 6 , the first switch unit and the second switch unit adopt the first communication mode;

[0152] S2, set the attenuation values of the first digital attenuator and the second digital attenuator to 0;

[0153] S3, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency of the first measured radio station and the second measured radio station is the same, the first measured radio station enters the transmitting state and is connected to the first radio frequency connector through the first high-power attenuator, and the second measured radio station enters the receiving state and is connected to the second radio frequency connector through the second high-power attenuator.

[0154] S4, connect the mixing unit output signal power measurement interface of the second directional coupler to the measuring device, and read the measuring device reading; the measuring device is a spectrum analyzer or a power meter.

[0155] S5, gradually increase the attenuation value of the second digital attenuator until the second measured radio signal reaches the receiving sensitivity state, and record the attenuation value of the second digital attenuator at this time;

[0156] S6, combine the spectrum analyzer or power meter reading, the second double directional coupler coupling value, the attenuation value of the second digital attenuator, and the attenuation value of the second high-power attenuator to calculate the sensitivity of the second measured radio station.

[0157] S7, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequencies of the first measured radio station and the second measured radio station are the same, the first measured radio station enters the receiving state and is connected to the first radio frequency connector through the first high-power attenuator, and the second measured radio station enters the transmitting state and is connected to the second radio frequency connector through the second high-power attenuator.

[0158] S8, connect the mixing unit output signal power measurement interface of the first directional coupler to the measuring device, and read the measuring device reading; the measuring device is a spectrum analyzer or a power meter.

[0159] S9, gradually increase the attenuation value of the first digital attenuator until the first measured radio signal reaches the receiving sensitivity state, and record the attenuation value of the first digital attenuator at this time.

[0160] S10, combine the spectrum analyzer or power meter reading, the first double directional coupler coupling value, the first digital attenuator attenuation value, and the first high-power attenuator attenuation value to calculate the sensitivity of the first measured radio station.

[0161] In this specification, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0162] Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An auxiliary device for radio sensitivity testing, characterized in that, The application relates to a signal power measurement device for a radio station, which comprises a first access unit, a second access unit, a control unit, a mixing unit, a local oscillator unit, a first switch unit and a second switch unit. The first access unit accesses one end of a transmitting end and a receiving end, is used for attenuating signals transmitted in a link, and provides a mixing unit output signal power measurement interface and an attenuation value measurement interface, and is connected with the first switch unit. The second access unit accesses the other end of the transmitting end and the receiving end, is used for attenuating signals transmitted in a link, and provides a mixing unit output signal power measurement interface and an attenuation value measurement interface, and is connected with the second switch unit. The first switch unit and the second switch unit comprise two communication modes: the first communication mode is that the first switch unit and the second switch unit are directly connected, and the second communication mode is that the first switch unit passes through the mixing unit and is connected with the second switch unit. The local oscillator unit is used for generating a local oscillator signal and is connected with the mixing unit, and the local oscillator signal is transmitted to the mixing unit. The mixing unit is used for mixing the signal input into the mixing unit from one of the first access unit and the second access unit with the local oscillator signal and outputting the mixed signal to the other of the first access unit and the second access unit. The control unit is connected with the first switch unit, the second switch unit, the first access unit, the second access unit and the local oscillator unit respectively, is used for switching the communication mode of the first switch unit and the second switch unit, thereby realizing switching of a test mode, setting the attenuation values of the first access unit and the second access unit and setting a local oscillator signal frequency value. The first switch unit comprises a first single-pole double-throw switch, and the second switch unit comprises a second single-pole double-throw switch.

2. The auxiliary device for testing the sensitivity of a radio station according to claim 1, characterized in that, The first access unit is connected with a common terminal of the first single-pole double-throw switch, one non-common terminal of the first single-pole double-throw switch is connected with one end of the mixing unit, the other end of the mixing unit is connected with one non-common terminal of the second single-pole double-throw switch, the other non-common terminal of the first single-pole double-throw switch is connected with the other non-common terminal of the second single-pole double-throw switch, and the common terminal of the second single-pole double-throw switch is connected with the second access unit. The transmitting end comprises an exciter in a transmitting state and a measured radio station in the transmitting state, and the receiving end comprises a measured radio station in a receiving state.

3. The auxiliary device for testing the sensitivity of a radio station according to claim 1, characterized in that, The first access unit comprises a first radio frequency connector, a first digital control attenuator and a first double directional coupler.

4. The auxiliary device for testing the sensitivity of a radio station according to claim 1, characterized in that, One end of the first radio frequency connector is connected with the transmitting end or the receiving end, the other end of the first radio frequency connector is connected with one end of the first digital control attenuator, the other end of the first digital control attenuator is connected with one end of the first double directional coupler, and the other end of the first double directional coupler is connected with the first switch unit. The first digital control attenuator is used for realizing attenuation of the signal in the link of the first access unit in a digital control mode. The forward sampling port of the first double directional coupler is used for power sampling of the mixing unit output signal, and the reverse sampling port is used for attenuation value measurement of the first digital control attenuator. The second access unit comprises a second radio frequency connector, a second digital control attenuator and a second double directional coupler.

5. The auxiliary device for testing the sensitivity of a radio station according to claim 1, wherein, ​ The transmitting end or the receiving end is connected with one end of a second radio frequency connector, the other end of the second radio frequency connector is connected with one end of a second numerical control attenuator, the other end of the second numerical control attenuator is connected with one end of a second double directional coupler, and the other end of the second double directional coupler is connected with a second switch unit; The second numerical control attenuator is used for realizing the attenuation of the first access unit link signal in a numerical control mode. The forward sampling port of the second double directional coupler is used for power sampling of the mixed frequency unit output signal size, and the reverse sampling port is used for first numerical control attenuator attenuation value metering.

6. A method of using a radio sensitivity test aid, comprising: The station sensitivity test auxiliary device is used for station sensitivity test, including four test modes: When the transmitting end is an exciter, the receiving end is a measured station, and the exciter frequency and the measured station operating frequency difference can be determined, the first fixed frequency test mode is adopted; When the transmitting end is an exciter, the receiving end is a measured station, and the exciter frequency and the measured station operating frequency difference cannot be determined, the second non-fixed frequency test mode is adopted; When the transmitting end is a measured station, the receiving end is another measured station, and the two measured station operating frequency differences can be determined, the third fixed frequency test mode is adopted; When the transmitting end is a measured station, the receiving end is another measured station, and the two measured station operating frequency differences cannot be determined, the fourth non-fixed frequency test mode is adopted.

7. The method of claim 6, wherein the method further comprises: The first fixed frequency test mode includes the following steps: S1, the second communication mode is adopted between the first switch unit and the second switch unit; S2, the local oscillator unit output signal frequency value F1 is set, and the attenuation values of the first access unit and the second access unit are set to 0; S3, the operating frequency points of the exciter and the measured station are set respectively, so that the exciter and the measured station frequency difference is F1, the exciter enters the transmitting state and accesses the first access unit, and the measured station enters the receiving state and accesses the second access unit; S4, the mixed frequency unit output signal power measurement interface of the second access unit is connected with the measuring device, and the measuring device reading is read; S5, the attenuation value of the second access unit is gradually increased until the measured station signal reaches the receiving sensitivity state, and the attenuation value at this time is recorded; S6, the measured station sensitivity is calculated.

8. The method of claim 6, wherein the method further comprises: The second non-fixed frequency test mode includes the following steps: S1, the first communication mode is adopted between the first switch unit and the second switch unit; S2, the attenuation values of the first access unit and the second access unit are set to 0; S3, the operating frequency points of the exciter and the measured station are set respectively, so that the exciter and the measured station frequency are the same, the exciter enters the transmitting state and accesses the first access unit, and the measured station enters the receiving state and accesses the second access unit; S4, the mixed frequency unit output signal power measurement interface of the second access unit is connected with the measuring device, and the measuring device reading is read; S5, the attenuation value of the second access unit is gradually increased until the measured station signal reaches the receiving sensitivity state, and the attenuation value at this time is recorded; S6, the measured station sensitivity is calculated.

9. The method of claim 6, wherein the method further comprises: The third fixed frequency test mode includes the following steps: S1, the first switch unit and the second switch unit adopt the second communication mode; S2, set the frequency value F1 of the local oscillator unit output signal, and set the attenuation values of the first access unit and the second access unit to 0; S3, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency difference between the first measured radio station and the second measured radio station is F1, the first measured radio station enters the transmitting state and accesses the first access unit, and the second measured radio station enters the receiving state and accesses the second access unit; S4, connect the output signal power measurement interface of the mixing unit of the second access unit with the measuring device, and read the reading of the measuring device; S5, gradually increase the attenuation value of the second access unit until the signal of the second measured radio station reaches the receiving sensitivity state, and record the attenuation value at this time; S6, calculate the sensitivity of the second measured radio station; S7, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency difference between the first measured radio station and the second measured radio station is F1, the first measured radio station enters the receiving state and accesses the first access unit, and the second measured radio station enters the transmitting state and accesses the second access unit; S8, connect the output signal power measurement interface of the mixing unit of the first access unit with the measuring device, and read the reading of the measuring device; S9, gradually increase the attenuation value of the first access unit until the signal of the first measured radio station reaches the receiving sensitivity state, and record the attenuation value at this time; S10, calculate the sensitivity of the first measured radio station.

10. The method of claim 6, wherein the method further comprises: The fourth non-fixed frequency test mode includes the following steps: S1, the first switch unit and the second switch unit adopt the first communication mode; S2, set the attenuation values of the first access unit and the second access unit to 0; S3, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency of the first measured radio station and the second measured radio station is the same, the first measured radio station enters the transmitting state and accesses the first access unit, and the second measured radio station enters the receiving state and accesses the second access unit; S4, connect the output signal power measurement interface of the mixing unit of the second access unit with the measuring device, and read the reading of the measuring device; S5, gradually increase the attenuation value of the second access unit until the signal of the second measured radio station reaches the receiving sensitivity state, and record the attenuation value at this time; S6, calculate the sensitivity of the second measured radio station; S7, set the operating frequency points of the first measured radio station and the second measured radio station respectively, so that the frequency of the first measured radio station and the second measured radio station is the same, the first measured radio station enters the receiving state and accesses the first access unit, and the second measured radio station enters the transmitting state and accesses the second access unit; S8, connect the output signal power measurement interface of the mixing unit of the first access unit with the measuring device, and read the reading of the measuring device; S9, gradually increase the attenuation value of the first access unit until the signal of the first measured radio station reaches the receiving sensitivity state, and record the attenuation value at this time; S10, calculate the sensitivity of the first measured radio station.

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