CN106095705A - A kind of apparatus and method realizing signal/spectrum analyzer ultra broadband spread spectrum - Google Patents
A kind of apparatus and method realizing signal/spectrum analyzer ultra broadband spread spectrum Download PDFInfo
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- CN106095705A CN106095705A CN201610349591.2A CN201610349591A CN106095705A CN 106095705 A CN106095705 A CN 106095705A CN 201610349591 A CN201610349591 A CN 201610349591A CN 106095705 A CN106095705 A CN 106095705A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
Abstract
The present invention proposes a kind of device realizing signal/spectrum analyzer ultra broadband spread spectrum, and radiofrequency signal is inputted by ultra broadband coaxial connector, is divided into former frequency range and spread spectrum frequency range through the first switch duplex assembly, and spread spectrum frequency range includes one or more frequency range；Spread spectrum frequency band signals is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in spot-frequency local oscillation source, it is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carry out many times frequency multiplication by frequency multiplication assembly, produce the required one or more points frequency local oscillation signal of spread spectrum, it is separately input to the frequency mixer of corresponding spread spectrum frequency range, it is mixed with radiofrequency signal, produce the signal in original signal/spectrum analyzer working frequency range；The signal that spread spectrum frequency range mixing produces is combined into a road, is input to second switch duplex assembly after being filtered amplifying, and is combined into a road output with former frequency band signals, and the prevention at radio-frequency port entering into signal/spectrum analyzer carries out subsequent analysis process.
Description
Technical field
The present invention relates to signal frequency domain analysis field, realize signal/spectrum analyzer ultra broadband spread spectrum particularly to one
Device, further relate to a kind of method realizing signal/spectrum analyzer ultra broadband spread spectrum.
Background technology
Modern signal/spectrum analyzer has excellent test dynamic range, phase noise, test amplitude precision and test
Speed, is the important tool that signal frequency domain is analyzed, is widely used in microwave communication, radar, navigation, electronic countermeasure, EMC test etc.
Field.With scientific and technical development, the frequency range of signal/spectrum analyzer, measurement sensitivity etc. are proposed more
High requirement.
Existing signal/spectrum analyzer carries out band spreading mainly two schemes, and one is that RS company uses tradition
Scheme, by designing the front end programmable step attenuator of ultra broadband, switch, complicated frequency conversion link etc., it is achieved that integrated
67GHz, 85GHz ultra-broadband signal/spectrum analyzer, it is possible to achieve quickly sweeping of 3Hz-67GHz or 3Hz-85GHz full frequency band
Retouch test.
Another kind of prior art is the spread spectrum module using series waveguide frequency range, and radiofrequency signal passes through standard rectangular ripple
Waveguide interface inputs, the inside local oscillation signal providing with signal/spectrum analyzer, according to mixing formula set in advance, configures phase
The control software answered, is mixed in spread spectrum module.Some schemes are that the intermediate-freuqncy signal of mixing directly generation lower frequency is defeated
Enter " intermediate frequency input " port to signal/spectrum analyzer；Some schemes be mixing after produce the first higher intermediate-freuqncy signal, defeated
Enter " radio frequency " port to signal/spectrum analyzer, be then analyzed processing, and on signal/spectrum analyzer, show knot
Really.
RS company integration ultra-broadband signal/spectrum analyzer scheme cost is high, expensive；Further, before in the program
End programmable step attenuator and interconnection cable have bigger insertion loss at high band, will reduce the test spirit of this frequency range of complete machine
Sensitivity index.
Use the scheme of series waveguide frequency range spread spectrum module, the test of single waveguide frequency range can only be carried out every time, it is impossible to enter
The quick sweep test analysis of row ultra broadband full frequency band.Further, this spread spectrum scheme needs to utilize the inside basis of signal/spectrum analyzer
Shake signal, and is controlled by signal/spectrum analyzer special software of outfit, it is desirable to spread spectrum module and signal/spectrum analysis
Instrument must be compatible with, if spread spectrum module and signal/spectrum analyzer are not same producers, or the product of producer's different times
Product, it is possible to existing cannot the problem of connecting test.Subband scheme is not configured to filter mirror image, the spurious response such as multiple
Preselector, host software algorithm or secondary calculating method can only be used to carry out image frequency, the identification of multiple parasitic signal, reduce
Signal measurement precision and measuring speed.
Content of the invention
For solving above-mentioned deficiency of the prior art, the present invention proposes one and realizes signal/spectrum analyzer ultra broadband
The apparatus and method of spread spectrum.
The technical scheme is that and be achieved in that:
A kind of device realizing signal/spectrum analyzer ultra broadband spread spectrum, radiofrequency signal passes through ultra broadband coaxial connector
Input, is divided into former frequency range and spread spectrum frequency range through the first switch duplex assembly, and spread spectrum frequency range includes one or more frequency range；Spread spectrum frequency
Segment signal is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in spot-frequency local oscillation source, outside being locked in
The signal that portion's signal/spectrum analyzer provides, with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly, produces needed for spread spectrum
Or multiple spot-frequency local oscillation signal, it is separately input to the frequency mixer of corresponding spread spectrum frequency range, be mixed with radiofrequency signal, produce former letter
Number/spectrum analyzer working frequency range in signal；The signal that spread spectrum frequency range mixing produces is combined into a road, defeated after being filtered amplifying
Enter to second switch duplex assembly, be combined into a road output with former frequency band signals, enter into the prevention at radio-frequency port of signal/spectrum analyzer
Carry out subsequent analysis process.
Alternatively, the above-mentioned device realizing signal/spectrum analyzer ultra broadband spread spectrum, built-in FPGA, memory and control
Circuit processed, the program control order receiving outer computer carries out Frequency Band Selection, amplification or straight-through control, and stores spread spectrum device
Straight-through loss, high band conversion loss information, under the control of outer computer, complete to surpass with signal/spectrum analyzer jointly
The quick sweep test of broadband signal, coordinates spread spectrum software, test data according to signal/spectrum analyzer, spreads device
Switchgear distribution and the configuration information of internal local vibration source, show full frequency band signal message, it is achieved full frequency band on outer computer
Rapid frequency-sweeping test analysis.
Alternatively, input signal is divided into former frequency range and spread spectrum frequency range by the first switch duplex assembly, and spread spectrum frequency range includes
First spread spectrum frequency range and second spread spectrum frequency range, first spread spectrum frequency range and second spread spectrum two frequency band signals of frequency range respectively through
Bandpass filtering and amplify or straight-through process after, be separately input to the first frequency mixer and the second frequency mixer；Built-in spot-frequency local oscillation
Source, is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly, produce two
Individual spot-frequency local oscillation signal, is separately input to the first frequency mixer and the second frequency mixer, with the first spread spectrum frequency range and the second spread spectrum frequency
Section two segment signals are mixed, and output signal carries out filter and amplification after being combined into a road, are then input to second switch duplex assembly,
Being combined into a road output with former frequency band signals, the prevention at radio-frequency port entering into signal/spectrum analyzer carries out subsequent analysis process.
Alternatively, the first spread spectrum frequency band signals and the second spread spectrum frequency band signals pass through the first bandpass filter and the respectively
Two band-pass filter, filters the corresponding image frequency of this frequency range and intermediate-frequency band signal, it is achieved press down mirror image and multiple response
System.
Present invention also offers a kind of method realizing signal/spectrum analyzer ultra broadband spread spectrum, radiofrequency signal is by surpassing
Broadband coaxial connector input, through first switch duplex assembly be divided into former frequency range and spread spectrum frequency range, spread spectrum frequency range include one or
Multiple frequency ranges；Spread spectrum frequency band signals is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in frequency
Local vibration source, is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly, produce
The required one or more points frequency local oscillation signal of raw spread spectrum, is separately input to the frequency mixer of corresponding spread spectrum frequency range, with radiofrequency signal
It is mixed, produce the signal in original signal/spectrum analyzer working frequency range；The signal that spread spectrum frequency range mixing produces is combined into one
Road, be filtered amplify after be input to second switch duplex assembly, with former frequency band signals be combined into one tunnel output, enter into signal/
The prevention at radio-frequency port of spectrum analyzer carries out subsequent analysis process.
Alternatively, the above-mentioned method realizing signal/spectrum analyzer ultra broadband spread spectrum, built-in FPGA, memory and control
Circuit processed, the program control order receiving outer computer carries out Frequency Band Selection, amplification or straight-through control, and stores spread spectrum device
Straight-through loss, high band conversion loss information, under the control of outer computer, complete to surpass with signal/spectrum analyzer jointly
The quick sweep test of broadband signal, coordinates spread spectrum software, test data according to signal/spectrum analyzer, spreads device
Switchgear distribution and the configuration information of internal local vibration source, show full frequency band signal message, it is achieved full frequency band on outer computer
Rapid frequency-sweeping test analysis.
Alternatively, input signal is divided into former frequency range and spread spectrum frequency range by the first switch duplex assembly, and spread spectrum frequency range includes
First spread spectrum frequency range and second spread spectrum two frequency ranges of frequency range, the first spread spectrum frequency range and second spread spectrum two frequency band signals of frequency range
It after bandpass filtering and amplification or straight-through process, is separately input to the first frequency mixer and the second frequency mixer；Built-in point
Frequently local vibration source, is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly,
Produce two spot-frequency local oscillation signals, be separately input to the first frequency mixer and the second frequency mixer, with the first spread spectrum frequency range and second
Spread spectrum frequency range two segment signal is mixed, and output signal carries out filter and amplification after being combined into a road, is then input to second switch double
Work assembly, is combined into a road output with former frequency band signals, and the prevention at radio-frequency port entering into signal/spectrum analyzer is carried out at subsequent analysis
Reason.
Alternatively, the first spread spectrum frequency band signals and the second spread spectrum frequency band signals pass through the first bandpass filter and the respectively
Two band-pass filter, filters the corresponding image frequency of this frequency range and intermediate-frequency band signal, it is achieved press down mirror image and multiple response
System.
The invention has the beneficial effects as follows:
(1) convenient spread spectrum, it is achieved full frequency band rapid frequency-sweeping test analysis: on the basis of low-band signal/spectrum analyzer
On, utilize apparatus and method of the present invention, the band spreading of high performance-price ratio can be realized easily, carry out full frequency band rapid frequency-sweeping survey
Examination is analyzed.
(2) full frequency band shows without blurred signal, it is not necessary to carry out signal discriminating: is divided by rational frequency range and is filtered and sets
Put, filter the corresponding image frequency of extended frequency band mixing, it is not necessary to carry out signal discriminating, it is achieved the true parsing of full frequency band signal.
(3) expand frequency range and can obtain higher measurement sensitivity: spread 50GHz-86GHz frequency range in device, subsection setup
Low-noise amplifier, it is achieved that high sensitivity receives test；Because spreading in device without front end programmable step attenuator and interconnection electricity
Cable, this frequency range can obtain compared with the higher sensitivity of integration signal/spectrum analyzer.
(4) there is relatively low phase noise: built-in Low phase noise spot-frequency local oscillation source, can be by signal/spectrum analyzer output
10MHz reference signal be synchronized, use frequency multiplication mode to obtain the required Low phase noise local oscillator letter of 50GHz-86GHz frequency range mixing
Number, meet signal testing needs.
(5) there is higher compatibility: only need external signal/spectrum analyzer to provide 10MHz reference signal, signal/frequently
The control of spectrometer and digital independent use SCPI standard agreement, and this is all indispensable function of most tester,
Compatibility is higher.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the accompanying drawing of required use is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, all right
Obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the control block diagram of the spread spectrum device of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The technical scheme of extension signal/spectrum analyzer operating frequency range is to use the spread spectrum of series waveguide frequency range at present
Module, the inside local oscillation signal being provided by signal/spectrum analyzer, it is mixed with radiofrequency signal, the intermediate-freuqncy signal of generation
It is linked into signal/spectrum analyzer again to be analyzed processing.Existing technical scheme can only carry out single waveguide wave band every time
Test, it is impossible to carry out the quick sweep test analysis of ultra broadband full frequency band.
The present invention constructs the spread spectrum device of a kind of built-in local vibration source, utilize this device can very easily to signal/
Spectrum analyzer is extended, it is achieved the quick sweep test of ultra broadband full frequency band, and is expanding frequency range, and this device has higher
Measurement sensitivity.The spread spectrum device of the present invention does not needs to carry out special upgrading to original signal/spectrum analyzer,
Original signal/spectrum analyzer still can normally use.
The system of the spread spectrum device composition of the present invention also includes configuration software, power supply adaptor, external control computer, letter
Number/spectrum analyzer.The device realizing signal/spectrum analyzer ultra broadband spread spectrum of the present invention, radiofrequency signal passes through ultra broadband
Coaxial connector inputs, and is divided into former frequency range and spread spectrum frequency range through the first switch duplex assembly, and spread spectrum frequency range includes one or more
Frequency range；Spread spectrum frequency band signals is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in spot-frequency local oscillation
Source, is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly, produce and expand
One or more points frequency local oscillation signal needed for Pin, is separately input to the frequency mixer of corresponding spread spectrum frequency range, carries out with radiofrequency signal
Mixing, produces the signal in original signal/spectrum analyzer working frequency range；The signal that spread spectrum frequency range mixing produces is combined into a road, enters
It is input to second switch duplex assembly after row filter and amplification, be combined into a road output with former frequency band signals, enter into signal/frequency spectrum and divide
The prevention at radio-frequency port of analyzer carries out subsequent analysis process.
The built-in FPGA of spread spectrum device of the present invention, memory and control circuit, can receive the program control order of outer computer
Carry out Frequency Band Selection, amplification or straight-through control, and store the information such as the straight-through loss of spread spectrum device, high band conversion loss,
Under the control of outer computer, jointly complete the quick sweep test of ultra-broadband signal with signal/spectrum analyzer, coordinate and expand
Frequently software, the setting etc. of test data according to signal/spectrum analyzer, the switchgear distribution of spread spectrum device and internal local vibration source
Information, can show full frequency band signal message on outer computer, it is achieved full frequency band rapid frequency-sweeping test analysis.
Fig. 1 gives the control block diagram that the present invention spreads device, as it is shown in figure 1, the spread spectrum device of the present invention includes: switch
Duplex assembly 1-2, switch 11-n2, switch module 1-2, bandpass filter 1-n, amplifier 1-n, frequency mixer 1-n, spot-frequency local oscillation
Source, frequency multiplication assembly, FPGA and control circuit.
Input signal is divided into former frequency range and spread spectrum frequency range by switch duplex assembly 1, and spread spectrum frequency range includes multiple frequency range, many
It after individual frequency band signals is respectively through bandpass filtering treatment, switch selection, amplification or straight-through process, switch selection, is separately input to
Frequency mixer 1 ... frequency mixer n；Built-in spot-frequency local oscillation source, is locked in the signal that external signal/spectrum analyzer provides with reference to upper,
Carry out many times frequency multiplication by frequency multiplication assembly, produce n spot-frequency local oscillation signal, be separately input to frequency mixer 1 ... frequency mixer n, with
Multiple frequency band signals are mixed, and output signal carries out filter and amplification behind switch module 2He Wei mono-tunnel, is then input to out
Closing duplex assembly 2, being combined into a road output with former frequency band signals, the prevention at radio-frequency port entering into signal/spectrum analyzer carries out follow-up
Analyzing and processing.
The spread spectrum apparatus and method of the present invention are provided with bandpass filter 1 ... bandpass filter n, pass through multiple frequencies respectively
Segment signal, filters the corresponding image frequency of this frequency range and intermediate-frequency band signal, it is achieved the suppression to mirror image and multiple response, it is ensured that
The normal measurement function of signal/spectrum analyzer；The spread spectrum apparatus and method of the present invention do not need host software algorithm correction and
External secondary calculates and carries out signal identification, improves test speed and weak-signal measurement ability can be greatly improved.
The spread spectrum apparatus and method of the present invention be provided with front end amplify or lead directly to selection circuit, can according to test signal big
Little, switch selects to amplify or straight-through, improves measurement sensitivity and the dynamic range of spread spectrum device.
In above-described embodiment, as a example by 3Hz-50GHz signal/spectrum analyzer expands to 3Hz-86GHz, the 3Hz-of input
86GHz signal is divided into tri-frequencies of 3Hz-50GHz, 50GHz-72.5GHz and 72.5GHz-86GHz by switch duplex assembly 1
Section, two frequency band signals of more than 50GHz select respectively through bandpass filtering treatment, switch, amplify or straight-through process, switch choosing
It after selecting, is separately input to frequency mixer 1 and frequency mixer 2；Built-in 5.7GHz Low phase noise spot-frequency local oscillation source, is locked in outside 3Hz-
The 10MHz that 50GHz signal/spectrum analyzer provides, with reference to upper, carries out many times frequency multiplication by frequency multiplication assembly, produce 45.6GHz and
Two spot-frequency local oscillation signals of 68.4GHz, are separately input to frequency mixer 1 and frequency mixer 2, with 50GHz-72.5GHz, 72.5GHz-
86GHz two segment signal is mixed, and produces two sections of intermediate-freuqncy signals of 4.4GHz-26.9GHz, 4.1GHz-17.6GHz, by switch
Assembly 2He Wei mono-carries out filter and amplification behind tunnel, is then input to switch duplex assembly 2, is combined into one with 3Hz-50GHz frequency band signals
Road exports, and the prevention at radio-frequency port entering into 3Hz-50GHz signal/spectrum analyzer carries out subsequent analysis process.
In the present embodiment, bandpass filter 1 and bandpass filter 2 pass through 50GHz-72.5GHz, 72.5GHz-respectively
86GHz signal, filters the corresponding image frequency of this frequency range and intermediate-frequency band signal, and spread spectrum device frequency range divides and local oscillator control is closed
System is shown in Table 1.
Table 1
In the present embodiment, spread spectrum device is under the control of outer computer, common with 3Hz-50GHz signal/spectrum analyzer
With the quick sweep test completing 3Hz-72GHz or 3Hz-86GHz ultra-broadband signal, coordinate spread spectrum software, according to 3Hz-50GHz
The information such as the setting of the test data of signal/spectrum analyzer, the switchgear distribution of spread spectrum device and internal local vibration source, Ke Yi
3Hz-72GHz or 3Hz-86GHz full frequency band signal message is shown, it is achieved the test point of full frequency band rapid frequency-sweeping on outer computer
Analysis.
The present invention constructs the ultra broadband spread spectrum apparatus and method of a kind of built-in local vibration source, utilizes this apparatus and method permissible
Very easily signal/spectrum analyzer is spread, it is achieved the quick sweep test of ultra broadband full frequency band.Further, the present invention
Spread spectrum device and method do not need to carry out upgrading to original signal/spectrum analyzer, original signal/spectrum analyzer is still
Can normally use.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. the device realizing signal/spectrum analyzer ultra broadband spread spectrum, it is characterised in that radiofrequency signal is same by ultra broadband
Mandrel connector inputs, and is divided into former frequency range and spread spectrum frequency range through the first switch duplex assembly, and spread spectrum frequency range includes one or more frequency
Section；Spread spectrum frequency band signals is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in spot-frequency local oscillation source,
It is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carry out many times frequency multiplication by frequency multiplication assembly, produce spread spectrum institute
The one or more points frequency local oscillation signal needing, is separately input to the frequency mixer of corresponding spread spectrum frequency range, is mixed with radiofrequency signal,
Produce the signal in original signal/spectrum analyzer working frequency range；The signal that spread spectrum frequency range mixing produces is combined into a road, is filtered
It is input to second switch duplex assembly after amplification, be combined into a road output with former frequency band signals, enter into signal/spectrum analyzer
Prevention at radio-frequency port carries out subsequent analysis process.
2. realize the device of signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 1, it is characterised in that built-in
FPGA, memory and control circuit, the program control order receiving outer computer carries out Frequency Band Selection, amplification or straight-through control, and
Store straight-through loss, the high band conversion loss information of spread spectrum device, under the control of outer computer, with signal/frequency spectrum
Analyzer completes the quick sweep test of ultra-broadband signal jointly, coordinates spread spectrum software, according to the test of signal/spectrum analyzer
The configuration information of data, the switchgear distribution of spread spectrum device and internal local vibration source, shows full frequency band signal on outer computer
Information, it is achieved full frequency band rapid frequency-sweeping test analysis.
3. realize the device of signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 1, it is characterised in that input letter
Number by first switch duplex assembly be divided into former frequency range and spread spectrum frequency range, spread spectrum frequency range include the first spread spectrum frequency range and second expand
Frequent section, the first spread spectrum frequency range and second spread spectrum two frequency band signals of frequency range respectively through bandpass filtering and amplify or straight
It after logical process, is separately input to the first frequency mixer and the second frequency mixer；Built-in spot-frequency local oscillation source, is locked in external signal/frequency spectrum
The signal that analyzer provides, with reference to upper, carry out many times frequency multiplication by frequency multiplication assembly, produces two spot-frequency local oscillation signals, input respectively
It to the first frequency mixer and the second frequency mixer, is mixed with the first spread spectrum frequency range and the second spread spectrum frequency range two segment signal, output
Signal carries out filter and amplification after being combined into a road, is then input to second switch duplex assembly, and to be combined into a road defeated with former frequency band signals
Going out, the prevention at radio-frequency port entering into signal/spectrum analyzer carries out subsequent analysis process.
4. realize the device of signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 3, it is characterised in that first expands
Frequent segment signal and the second spread spectrum frequency band signals pass through the first bandpass filter and the second bandpass filter respectively, filter this frequency range
Corresponding image frequency and intermediate-frequency band signal, it is achieved the suppression to mirror image and multiple response.
5. the method realizing signal/spectrum analyzer ultra broadband spread spectrum, it is characterised in that radiofrequency signal is same by ultra broadband
Mandrel connector inputs, and is divided into former frequency range and spread spectrum frequency range through the first switch duplex assembly, and spread spectrum frequency range includes one or more frequency
Section；Spread spectrum frequency band signals is through bandpass filtering and amplifies or after straight-through process, is input to frequency mixer；Built-in spot-frequency local oscillation source,
It is locked in the signal that external signal/spectrum analyzer provides with reference to upper, carry out many times frequency multiplication by frequency multiplication assembly, produce spread spectrum institute
The one or more points frequency local oscillation signal needing, is separately input to the frequency mixer of corresponding spread spectrum frequency range, is mixed with radiofrequency signal,
Produce the signal in original signal/spectrum analyzer working frequency range；The signal that spread spectrum frequency range mixing produces is combined into a road, is filtered
It is input to second switch duplex assembly after amplification, be combined into a road output with former frequency band signals, enter into signal/spectrum analyzer
Prevention at radio-frequency port carries out subsequent analysis process.
6. realize the method for signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 5, it is characterised in that built-in
FPGA, memory and control circuit, the program control order receiving outer computer carries out Frequency Band Selection, amplification or straight-through control, and
Store straight-through loss, the high band conversion loss information of spread spectrum device, under the control of outer computer, with signal/frequency spectrum
Analyzer completes the quick sweep test of ultra-broadband signal jointly, coordinates spread spectrum software, according to the test of signal/spectrum analyzer
The configuration information of data, the switchgear distribution of spread spectrum device and internal local vibration source, shows full frequency band signal on outer computer
Information, it is achieved full frequency band rapid frequency-sweeping test analysis.
7. realize the method for signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 5, it is characterised in that input letter
Number by first switch duplex assembly be divided into former frequency range and spread spectrum frequency range, spread spectrum frequency range include the first spread spectrum frequency range and second expand
Frequent two frequency ranges of section, the first spread spectrum frequency range and second spread spectrum two frequency band signals of frequency range respectively through bandpass filtering and
Amplify or after straight-through process, be separately input to the first frequency mixer and the second frequency mixer；Built-in spot-frequency local oscillation source, is locked in outside letter
Number/spectrum analyzer provide signal with reference to upper, carry out many times frequency multiplication by frequency multiplication assembly, produce two spot-frequency local oscillation signals,
It is separately input to the first frequency mixer and the second frequency mixer, mix with the first spread spectrum frequency range and the second spread spectrum frequency range two segment signal
Frequently, output signal carries out filter and amplification after being combined into a road, is then input to second switch duplex assembly, is combined into former frequency band signals
One tunnel output, the prevention at radio-frequency port entering into signal/spectrum analyzer carries out subsequent analysis process.
8. realize the method for signal/spectrum analyzer ultra broadband spread spectrum as claimed in claim 7, it is characterised in that first expands
Frequent segment signal and the second spread spectrum frequency band signals pass through the first bandpass filter and the second bandpass filter respectively, filter this frequency range
Corresponding image frequency and intermediate-frequency band signal, it is achieved the suppression to mirror image and multiple response.
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| CN107947806A (en) * | 2017-12-04 | 2018-04-20 | 中国电子科技集团公司第四十研究所 | A kind of 145GHz Noise Factor Analyzers RF front-end circuit and processing method |
| CN108055047A (en) * | 2017-12-07 | 2018-05-18 | 中国电子科技集团公司第四十研究所 | A kind of 145GHz switch filterings mixer assembly and method |
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| CN110808758A (en) * | 2019-11-12 | 2020-02-18 | 中电科仪器仪表有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
| CN111220847A (en) * | 2019-05-21 | 2020-06-02 | 一诺仪器（中国）有限公司 | Frequency conversion system and spectrum analyzer |
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| CN113311228A (en) * | 2021-05-28 | 2021-08-27 | 中电科思仪科技股份有限公司 | Terahertz spectrum analysis device and spectrum analysis method |
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| CN110808758A (en) * | 2019-11-12 | 2020-02-18 | 中电科仪器仪表有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
| CN110808758B (en) * | 2019-11-12 | 2021-10-26 | 中电科思仪科技股份有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
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| CN113311228A (en) * | 2021-05-28 | 2021-08-27 | 中电科思仪科技股份有限公司 | Terahertz spectrum analysis device and spectrum analysis method |
| CN113315475A (en) * | 2021-05-28 | 2021-08-27 | 中电科思仪科技股份有限公司 | Terahertz broadband down-conversion device and working method thereof |
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