W-band signal source platform

Abstract

The utility model provides a W wave band signal source platform, comprising a W wave band test signal module used for sending a radio frequency signal of a waveguide device to be tested to a band-pass filter module, and a band-pass filter used for filtering the radio frequency signal; the controllable frequency generator is used for respectively sending radio frequency reference signals to the first W-band signal source module, the second W-band signal source module and the third W-band signal source module; the frequency mixing module is used for performing down-conversion operation on the radio frequency signal and the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal respectively; and the first W-band test reference signal after down-conversion, the second W-band test reference signal after down-conversion and the third W-band test reference signal after down-conversion are sent to a frequency spectrograph through an intermediate frequency amplification module. The stability of the waveguide device cannot be accurately measured; and the efficiency is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the waveguide instrument test field especially relates to a W wave band signal source platform. BACKGROUND

[0002] With the continuous development of electronic information technology, the application frequency of electromagnetic wave gradually improves, and the working frequency of waveguide instrument acting on W wave band mainly concentrates in 75~110GHz, because the frequency of W wave band is very wide, can support higher data transmission rate and larger communication capacity, makes the waveguide instrument acting on W wave band more and more widely used in satellite communication, radar system, wireless network and other fields, also makes the performance and stability requirement of waveguide instrument higher and higher.

[0003] At present, the testing mode of waveguide instrument acting on W wave band adopts the input waveguide instrument of coaxial signal source to obtain the test result, and the frequency range of traditional testing mode is relatively limited, and the instrument cost is relatively large, and the waveguide device needs adapter for testing, and for precision testing, an additional calibration step is needed, so that the testing steps are complicated, the calibration difficulty is large, and the waveguide device needs to be replaced for each test, and the stability of the waveguide device cannot be accurately measured and the efficiency is low. UTILITARY MODEL

[0004] Therefore, the utility model provides a W wave band signal source platform, can solve the problem that the stability of waveguide device cannot be accurately measured and the efficiency is low due to the single testing method of existing W wave band waveguide instrument.

[0005] The utility model embodiment provides a W wave band signal source platform, including: W wave band test signal module, band pass filter module, mixing frequency module, controllable frequency generator, first W wave band signal source module, second W wave band signal source module, third W wave band signal source module, intermediate frequency amplification module and frequency spectrum appearance;

[0006] W wave band test signal module is used for sending the radio frequency signal of waveguide device to be measured to band pass filter module, and the band pass filter is used for filtering radio frequency signal;

[0007] Controllable frequency generator is used for sending radio frequency reference signal to first W wave band signal source module, second W wave band signal source module and third W wave band signal source module respectively, and first W wave band signal source module generates first W wave band test reference signal according to radio frequency reference signal, second W wave band signal source module generates second W wave band test reference signal according to radio frequency reference signal, and third W wave band signal source module generates third W wave band test reference signal according to radio frequency reference signal;

[0008] The mixing module performs down-conversion operation on the radio frequency signal and the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal respectively, and sends the down-converted first W-band test reference signal, the down-converted second W-band test reference signal and the down-converted third W-band test reference signal to the spectrum analyzer through the intermediate frequency amplification module.

[0009] Optionally, the first W-band signal source module comprises a first band-pass filter, a 4 times frequency multiplier, a second band-pass filter, a first grating isolator and a first waveguide attenuator.

[0010] The first band-pass filter is configured to perform filtering operation on the radio frequency reference signal; the 4 times frequency multiplier is configured to perform 4 times frequency amplification on the radio frequency reference signal; and the second band-pass filter is configured to perform filtering operation on the radio frequency reference signal after 4 times frequency amplification.

[0011] The first grating isolator is configured to isolate the second band-pass filter from the first waveguide attenuator through grating isolation to reduce mutual interference between signals.

[0012] The first waveguide attenuator is configured to generate the first W-band test reference signal by adjusting the output power of the radio frequency reference signal after 4 times frequency amplification.

[0013] Optionally, the second W-band signal source module comprises a third band-pass filter, a 6 times frequency multiplier, a fourth band-pass filter, a second grating isolator and a second waveguide attenuator.

[0014] The third band-pass filter is configured to perform filtering operation on the radio frequency reference signal; the 6 times frequency multiplier is configured to perform 6 times frequency amplification on the radio frequency reference signal; and the fourth band-pass filter is configured to perform filtering operation on the radio frequency reference signal after 5 times frequency amplification.

[0015] The second grating isolator is configured to isolate the fourth band-pass filter from the second waveguide attenuator through grating isolation to reduce mutual interference between signals.

[0016] The second waveguide attenuator is configured to generate the second W-band test reference signal by adjusting the output power of the radio frequency reference signal after 6 times frequency amplification.

[0017] Optionally, the third W-band signal source module comprises a fifth band-pass filter, an 8 times frequency multiplier, a sixth band-pass filter, a third grating isolator and a third waveguide attenuator.

[0018] The fifth band-pass filter is configured to perform filtering operation on the radio frequency reference signal; the 8 times frequency multiplier is configured to perform 8 times frequency amplification on the radio frequency reference signal; and the sixth band-pass filter is configured to perform filtering operation on the radio frequency reference signal after 8 times frequency amplification.

[0019] The third grating isolator is used for isolating the sixth band-pass filter from the third waveguide attenuator through grating isolation to reduce mutual interference between signals.

[0020] The third waveguide attenuator is used for generating a third W-band test reference signal by adjusting the output power of the amplified RF reference signal with 8 times frequency.

[0021] Optionally, the platform further comprises a control module;

[0022] The control module is used for sending a first control signal to the controllable frequency generator to control the output frequency of the RF reference signal.

[0023] The control module is further used for sending a second control signal to the first waveguide attenuator to control the output power of the first W-band test reference signal.

[0024] The control module is further used for sending a third control signal to the second waveguide attenuator to control the output power of the second W-band test reference signal.

[0025] The control module is further used for sending a fourth control signal to the third waveguide attenuator to control the output power of the third W-band test reference signal.

[0026] Optionally, the frequency range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is 75GHz to 110GHz; and the output power range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is -60dBm to +20dBm.

[0027] Compared with the prior art, the utility model has the advantages of:

[0028] The utility model provides a kind of W wave band signal source platform, W wave band test signal module, for sending the radio frequency signal of waveguide device to be measured to band-pass filter module, band-pass filter is used to filter radio frequency signal;Controllable frequency generator is used to respectively send radio frequency reference signal to first W wave band signal source module, second W wave band signal source module, third W wave band signal source module;First W wave band signal source module generates first W wave band test reference signal according to radio frequency reference signal, second W wave band signal source module generates second W wave band test reference signal according to radio frequency reference signal, and third W wave band signal source module generates third W wave band test reference signal according to radio frequency reference signal;Mixing module, radio frequency signal is respectively with first W wave band test reference signal, second W wave band test reference signal, third W wave band test reference signal is down-converted operation, and first W wave band test reference signal after down-conversion, second W wave band test reference signal after down-conversion, third W wave band test reference signal after down-conversion are sent to spectrum analyzer by intermediate frequency amplification module.The utility model generates radio frequency signal of waveguide device to be measured by mixing module and down-converts to different intermediate frequency band, to verify the stability of its radio frequency signal, can solve the problem that the stability of waveguide device cannot be accurately measured and the efficiency is low due to the single test method of the existing W wave band waveguide instrument. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will introduce the drawing needed to be used in embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor intensity.

[0030] Figure 1 It is the structure schematic diagram of a kind of W wave band signal source platform provided by the utility model embodiment;

[0031] Figure 2 It is the structure schematic diagram of first W wave band signal source module provided by the utility model embodiment;

[0032] Figure 3 It is the structure schematic diagram of second W wave band signal source module provided by the utility model embodiment;

[0033] Figure 4 It is the structure schematic diagram of third W wave band signal source module provided by the utility model embodiment. DETAILED DESCRIPTION

[0034] In the following description, for the purpose of explaining and not for the purpose of limiting, specific details are set forth such as a particular system architecture, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices are omitted so as not to obscure the description of the present application with unnecessary detail.

[0035] In order to make the objectives, technical schemes and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the drawings.

[0036] Embodiment 1

[0037] Please refer to the drawings Figure 1 The embodiment of the present application provides a W-band signal source platform 10, comprising: a W-band test signal module 11, a band-pass filter module 12, a mixing module 13, a controllable frequency generator 14, a first W-band signal source module 15, a second W-band signal source module 16, a third W-band signal source module 17, an intermediate frequency amplification module 18 and a spectrum analyzer 19.

[0038] The W-band test signal module 11 is used to send the radio frequency signal of the waveguide device to be tested to the band-pass filter module 12, and the band-pass filter is used to filter the radio frequency signal.

[0039] The controllable frequency generator 14 is used to send the radio frequency reference signal to the first W-band signal source module 15, the second W-band signal source module 16 and the third W-band signal source module 17 respectively; the first W-band signal source module 15 generates the first W-band test reference signal according to the radio frequency reference signal, the second W-band signal source module 16 generates the second W-band test reference signal according to the radio frequency reference signal, and the third W-band signal source module 17 generates the third W-band test reference signal according to the radio frequency reference signal.

[0040] The mixing module 13 performs the down-conversion operation on the radio frequency signal, the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal respectively, and sends the down-converted first W-band test reference signal, the down-converted second W-band test reference signal and the down-converted third W-band test reference signal to the spectrum analyzer 19 through the intermediate frequency amplification module 18.

[0041] Optionally, the frequency range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is 75GHz to 110GHz; and the output power range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is -60dBm to +20dBm.

[0042] The utility model discloses a beneficial effect compared with prior art has:

[0043] The utility model provides a kind of W wave band signal source platform 10, W wave band test signal module 11, for sending the radio frequency signal of waveguide device to be measured to band-pass filter module 12, band-pass filter is used to filter radio frequency signal;Controllable frequency generator 14 is used to respectively send radio frequency reference signal to first W wave band signal source module 15, second W wave band signal source module 16, third W wave band signal source module 17;First W wave band signal source module 15 generates first W wave band test reference signal according to radio frequency reference signal, second W wave band signal source module 16 generates second W wave band test reference signal according to radio frequency reference signal, and third W wave band signal source module 17 generates third W wave band test reference signal according to radio frequency reference signal;Mixing module 13, radio frequency signal is respectively with first W wave band test reference signal, second W wave band test reference signal, third W wave band test reference signal carries out down conversion operation, and first W wave band test reference signal after down conversion, second W wave band test reference signal after down conversion, third W wave band test reference signal after down conversion are sent to frequency spectrometer 19 by intermediate frequency amplification module 18.The utility model generates radio frequency signal to different intermediate frequency band by mixing module 13 to the waveguide device to be measured, to verify the stability of its radio frequency signal, can solve the problem that the stability of waveguide device cannot be accurately measured and the efficiency is low due to the single test method of the waveguide instrument of existing W wave band.

[0044] Example 2

[0045] Please refer to the attached Figure 1 , attached Figure 2 , attached Figure 3 And attached Figure 4 , as a kind of W wave band signal source platform 10 provided by the utility model 10, including: W wave band test signal module 11, band-pass filter module 12, mixing module 13, controllable frequency generator 14, first W wave band signal source module 15, second W wave band signal source module 16, third W wave band signal source module 17, intermediate frequency amplification module 18 and frequency spectrometer 19;

[0046] W wave band test signal module 11, for sending the radio frequency signal of waveguide device to be measured to band-pass filter module 12, band-pass filter is used to filter radio frequency signal;

[0047] The controllable frequency generator 14 is used for transmitting a radio frequency reference signal to the first W-band signal source module 15, the second W-band signal source module 16 and the third W-band signal source module 17 respectively; the first W-band signal source module 15 generates a first W-band test reference signal according to the radio frequency reference signal, the second W-band signal source module 16 generates a second W-band test reference signal according to the radio frequency reference signal, and the third W-band signal source module 17 generates a third W-band test reference signal according to the radio frequency reference signal;

[0048] The mixing module 13 performs a down-conversion operation on the radio frequency signal and the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal respectively, and transmits the down-converted first W-band test reference signal, the down-converted second W-band test reference signal and the down-converted third W-band test reference signal to the spectrum analyzer 19 through the intermediate frequency amplification module 18.

[0049] Optionally, the first W-band signal source module 15 comprises a first band-pass filter, a 4 times frequency multiplier, a second band-pass filter, a first grating isolator and a first waveguide attenuator.

[0050] The first band-pass filter is used for filtering the radio frequency reference signal; the 4 times frequency multiplier is used for performing 4 times frequency amplification on the radio frequency reference signal; and the second band-pass filter is used for filtering the radio frequency reference signal after 4 times frequency amplification.

[0051] The first grating isolator is used for isolating the second band-pass filter from the first waveguide attenuator through grating isolation to reduce mutual interference between signals.

[0052] The first waveguide attenuator is used for generating the first W-band test reference signal by adjusting the output power of the radio frequency reference signal after 4 times frequency amplification.

[0053] In the embodiment, it is assumed that the radio frequency signal is 75-110 GHz, the radio frequency reference signal is a 11.5 GHz signal of-2 dBm, the radio frequency reference signal is filtered through the first band-pass filter, the radio frequency reference signal is 4 times frequency amplified through the 4 times frequency multiplier, the frequency of the amplified radio frequency reference signal is 45 GHz, the radio frequency reference signal is filtered through the second band-pass filter, the output power of the amplified radio frequency reference signal is adjusted to 10 dBm through the first waveguide attenuator, and the first W-band test reference signal is obtained, and the radio frequency signal of 75-110 GHz and the signal of 45 GHz with the output power of 10 dBm are down-converted through the mixing module 13, so that the radio frequency signal of 75-110 GHz is down-converted to 30-65 GHz.

[0054] Optionally, the second W-band signal source module 16 comprises a third band-pass filter, a 6th frequency multiplier, a fourth band-pass filter, a second grating isolator and a second waveguide attenuator.

[0055] The third band-pass filter is configured to filter the radio frequency reference signal, the 6th frequency multiplier is configured to amplify the radio frequency reference signal by 6 times, and the fourth band-pass filter is configured to filter the radio frequency reference signal amplified by 5 times.

[0056] The second grating isolator is configured to isolate the fourth band-pass filter from the second waveguide attenuator by grating isolation to reduce mutual interference between signals.

[0057] The second waveguide attenuator is configured to generate the second W-band test reference signal by adjusting the output power of the radio frequency reference signal amplified by 6 times.

[0058] In this embodiment, it is assumed that the radio frequency signal is 75-110 GHz, and the radio frequency reference signal is a 10 GHz signal with a power of 1.6 dBm. After filtering operation by the third band-pass filter, the radio frequency reference signal is amplified by 6 times by the 6th frequency multiplier, and the frequency of the amplified radio frequency reference signal is 60 GHz. After filtering operation by the fourth band-pass filter, the output power of the amplified radio frequency reference signal is adjusted to 14 dBm by the second waveguide attenuator, and the second W-band test reference signal can be obtained. Then, the 75-110 GHz radio frequency signal and the signal with an output power of 14 dBm and a signal frequency of 60 GHz are subjected to down-conversion operation by the mixing module 13, so that the 75-110 GHz radio frequency signal is down-converted to 15-55 GHz.

[0059] Optionally, the third W-band signal source module 17 comprises a fifth band-pass filter, an 8th frequency multiplier, a sixth band-pass filter, a third grating isolator and a third waveguide attenuator.

[0060] The fifth band-pass filter is configured to filter the radio frequency reference signal, the 8th frequency multiplier is configured to amplify the radio frequency reference signal by 8 times, and the sixth band-pass filter is configured to filter the radio frequency reference signal amplified by 8 times.

[0061] The third grating isolator is configured to isolate the sixth band-pass filter from the third waveguide attenuator by grating isolation to reduce mutual interference between signals.

[0062] The third waveguide attenuator is configured to generate the third W-band test reference signal by adjusting the output power of the radio frequency reference signal amplified by 8 times.

[0063] In the embodiment, it is assumed that the radio frequency signal is 75-110GHz, the radio frequency reference signal is 8.8GHz signal with 1.7dBm, the fifth band-pass filter is used for filtering operation, the 8 times frequency multiplier is used for 8 times frequency amplification of the radio frequency reference signal, the frequency of the amplified radio frequency reference signal is 70.4GHz, the sixth band-pass filter is used for filtering operation, the third waveguide attenuator is used for adjusting the output power of the amplified radio frequency reference signal to 8dBm, the third W wave band test reference signal can be obtained, and the 75-110GHz radio frequency signal and the signal with 70.4GHz frequency and 8dBm output power are input into the mixing module 13 for down-conversion operation, so that the 75-110GHz radio frequency signal is down-converted to 4.6-39.6GHz.

[0064] Optionally, the platform further comprises a control module 20;

[0065] The control module 20 is configured to send a first control signal to the controllable frequency generator 14 to control the output frequency of the radio frequency reference signal.

[0066] The control module 20 is further configured to send a second control signal to the first waveguide attenuator to control the output power of the first W wave band test reference signal.

[0067] The control module 20 is further configured to send a third control signal to the second waveguide attenuator to control the output power of the second W wave band test reference signal.

[0068] The control module 20 is further configured to send a fourth control signal to the third waveguide attenuator to control the output power of the third W wave band test reference signal.

[0069] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; these modifications or replacements do not change the essence of the corresponding technical solutions, and should be included in the protection scope of the present application.

Claims

1. A W-band signal source platform, characterized by, The application relates to a W-band test signal module, a band-pass filter module, a mixing module, a controllable frequency generator, a first W-band signal source module, a second W-band signal source module, a third W-band signal source module, an intermediate frequency amplification module and a spectrum analyzer. The W-band test signal module is used for transmitting a radio frequency signal of a waveguide device to be tested to the band-pass filter module, and the band-pass filter is used for filtering the radio frequency signal. The controllable frequency generator is used for transmitting a radio frequency reference signal to the first W-band signal source module, the second W-band signal source module and the third W-band signal source module respectively. The first W-band signal source module generates a first W-band test reference signal according to the radio frequency reference signal, the second W-band signal source module generates a second W-band test reference signal according to the radio frequency reference signal, and the third W-band signal source module generates a third W-band test reference signal according to the radio frequency reference signal. The mixing module performs a frequency down-conversion operation on the radio frequency signal, the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal respectively, and transmits the frequency down-converted first W-band test reference signal, the frequency down-converted second W-band test reference signal and the frequency down-converted third W-band test reference signal to the intermediate frequency amplification module and then to the spectrum analyzer. The first W-band signal source module comprises a first band-pass filter, a 4 times frequency amplifier, a second band-pass filter, a first grating isolator and a first waveguide attenuator.

2. The W-band signal source platform of claim 1, wherein, The first band-pass filter is used for filtering the radio frequency reference signal, the 4 times frequency amplifier is used for performing 4 times frequency amplification on the radio frequency reference signal, and the second band-pass filter is used for filtering the radio frequency reference signal after 4 times frequency amplification. The first grating isolator is used for isolating the second band-pass filter from the first waveguide attenuator through grating isolation to reduce mutual interference between signals. The first waveguide attenuator is used for generating the first W-band test reference signal by adjusting the output power of the radio frequency reference signal after 4 times frequency amplification. The second W-band signal source module comprises a third band-pass filter, a 6 times frequency amplifier, a fourth band-pass filter, a second grating isolator and a second waveguide attenuator.

3. The W-band signal source platform of claim 2, wherein, The third band-pass filter is used for filtering the radio frequency reference signal, the 6 times frequency amplifier is used for performing 6 times frequency amplification on the radio frequency reference signal, and the fourth band-pass filter is used for filtering the radio frequency reference signal after 5 times frequency amplification. The second grating isolator is used for isolating the fourth band-pass filter from the second waveguide attenuator through grating isolation to reduce mutual interference between signals. The second waveguide attenuator is used for generating the second W-band test reference signal by adjusting the output power of the radio frequency reference signal after 6 times frequency amplification. The third W-band signal source module comprises a fifth band-pass filter, an 8 times frequency amplifier, a sixth band-pass filter, a third grating isolator and a third waveguide attenuator.

4. The W-band signal source platform of claim 3, wherein, ​ a fifth band-pass filter configured to filter the radio frequency reference signal; an 8 times frequency multiplier configured to amplify the radio frequency reference signal by 8 times; and a sixth band-pass filter configured to filter the radio frequency reference signal amplified by 8 times; a third grating isolator configured to isolate the sixth band-pass filter from the third waveguide attenuator by grating isolation to reduce mutual interference between signals; a third waveguide attenuator configured to generate the third W-band test reference signal by adjusting the output power of the radio frequency reference signal amplified by 8 times.

5. A W-band signal source platform as claimed in claim 4, characterized in that The control module is further configured to send a first control signal to the controllable frequency generator to control the output frequency of the radio frequency reference signal. The control module is further configured to send a second control signal to the first waveguide attenuator to control the output power of the first W-band test reference signal. The control module is further configured to send a third control signal to the second waveguide attenuator to control the output power of the second W-band test reference signal. The control module is further configured to send a fourth control signal to the third waveguide attenuator to control the output power of the third W-band test reference signal. The frequency range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is 75 GHz to 110 GHz; and the output power range of the first W-band test reference signal, the second W-band test reference signal and the third W-band test reference signal is -60 dBm to +20 dBm.

6. A W-band signal source platform as claimed in claim 1, characterized in that ​

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