CN208597083U - A kind of simple X-band Network Analyzer - Google Patents
A kind of simple X-band Network Analyzer Download PDFInfo
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- CN208597083U CN208597083U CN201821481838.7U CN201821481838U CN208597083U CN 208597083 U CN208597083 U CN 208597083U CN 201821481838 U CN201821481838 U CN 201821481838U CN 208597083 U CN208597083 U CN 208597083U
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Abstract
The utility model provides a kind of simple X-band Network Analyzer, including microwave signal generates and test module and Electronic Calibration module, and to the embedded scm module that microwave signal generation and test module and Electronic Calibration module are controlled；The microwave signal is generated with two directional couplers in test module and Electronic Calibration module for coupling a port input signal and output signal；It selects one in four directional couplers to connect frequency mixer mixing later by forming 70M intermediate-freuqncy signal input logarithmic detector measurement power after filter filtering with the output of synchronous local vibration source by the hilted broadsword four-throw RF switch of one-chip computer module control, single-chip microcontroller processing is entered after being AD converted subsequently into AD sampler and is shown.The Network Analyzer frequency range of the utility model covers 8~12GHz, and signal source realizes that signal source uses automatic amplitude control circuit using crystal oscillator driving phaselocked loop in machine, it is ensured that radio frequency output amplitude is stablized in Whole frequency band.Feature be it is cheap, be suitable for using on production line.
Description
Technical field
The utility model relates to microwave network analyzer field, in particular to a kind of simple X-band Network Analyzer.
Background technique
With the fast development of military and civilian electronics and mechanics of communication, to the high speed of electronic device, module and system
High precision measurement also proposed high requirement.Microwave network analyzer is the master for testing microwave product scattering parameter (S parameter)
Want equipment, the development experience of microwave network analyzer from manual mode to automatic mode, from the test of narrow frequency range to broadband
Any sweep measurement, dynamic range are crossed over from 30dB to 100dB.Nowadays, with more and more wider, the world of application of Network Analyzer
The Network Analyzer product of major test equipment company oneself through seriation, standardization, become microwave and millimeter wave measuring instrument technology
Comprehensive expression of person, application field also tests from traditional passive linear Microwave Net, extends to high power device, non-linear device
The testing fields such as part, radar cross section, antenna and TR component.
It is Deco skill (former Agilent section that the manufacturer of high performance vector Network Analyzer, which focuses primarily upon, in the world at present
Skill) He Luode Schwarz company, the price is very expensive, and advanced networks analyzer needs millions of RMB quotations, and low side produces
Product quotation is suitable with domestic middle electric 41 institute, according to the different quotations about 20~400,000 of configuration.In addition Network Analyzer is due to belonging to
Precision instrument requires use environment high.As it can be seen that temperature and humidity or dust that the purchase cost and producing line of consideration instrument are severe
The precision instrument of environment, such valuableness is not suitable in producing line large-scale use.
It is suitble to the Network Analyzer of producing line large-scale use to have the following characteristics that (1) low cost, single network analyzer
Purchase cost is sufficiently low can to guarantee that every producing line even each test and debugging station can configure one, greatly improve
The production efficiency of microwave product；(2) totally-enclosed, it is desirable that Network Analyzer physical seal was both improved with external environs
The reliability and service life of product, also reduce the maintenance cost of instrument itself；(3) modularized design is convenient for routine maintenance
The work such as maintenance, fault location maintenance；(4) easy to operate, producing line network analysis to require easy to use, operation interface it is succinct,
The features such as easily training, the producing line worker for being suitble to technical capability not high use；(5) intelligent, there is multiple communication interface, compatibility certainly
Dynamicization test macro, test data such as upload at the functions automatically.It is designed for the simplification Network Analyzer of low cost, there is numerous scholars
It is studied.(the simple vector network analyzer of Sun Xia, Ji Zhen designs instrument and meter user, 2016,23 (1) to document [1]
49-51) propose a kind of simple intelligent Network Analyzer based on 32 ARM microcontrollers, signal source is by dedicated integrated DDS core
Piece AD9854 generates the orthogonal swept-frequency signal of two-way, and the signal of the orthogonal output of two-way is put after elliptic filter filters through variable gain
The big device amplitude of accommodation, then phase shift is adjusted through RLC network, obtain designated magnitude and phase shift signalling.Signal detection is by analog multiplier
It realizes, data show amplitude-frequency, phase-frequency characteristic curve by liquid crystal display after analog-to-digital conversion is analyzed by embeded processor.The network point
Analyzer design is only limitted to tens megahertzs of low-frequency range testing field.Document [2] (a economical vector network analysis of Xiong Wei
The design and realization East China Normal University Master's thesis of several modules of instrument, 2009.) develop a economical vector network point
Analyzer, proposes a kind of variable-frequency solutions based on sampling technique, and radiofrequency signal becomes intermediate-freuqncy signal merely through single-conversion, avoids
Using the design architecture of the multiple frequency conversion of traditional network analyzer, the amplitude and phase detection of signal is carried out in intermediate frequency.Network point
Signal source used in analyzer covers working frequency range using multiple oscillation sources, to ensure signal quality, using bimodulus prescale unit
Phase Lock Technique.Furthermore document also designs and produces the sampling of the step pulse based on sampling frequency-changing scheme source.The Network Analyzer institute
The signal source used Phase Lock Technique despite the use of, but signal source it is spuious it is higher, phase noise level is poor, seriously limit
The use dynamic range and frequency resolution of Network Analyzer.Document [3] (1GHz scalar network of the Nie Bailing based on DDS technology
Analyzer development Nanjing Aero-Space University Master's thesis, 2006.) one kind is described for TV band and mobile communication frequency
The intelligent scalar network analyzer of section, hardware frequency source directly drive phaselocked loop life using direct digital synthesizers chip (DDS)
It produces, radiofrequency signal carries out detection and analog-to-digital conversion after down-converting to intermediate-freuqncy signal using superheterodyne reception mode, is made using C8051
For control and data processing chip.The Network Analyzer has many advantages, such as high dynamic range, summary, low cost.Its frequency model
Highest order 1GHz is enclosed, since the signal source debugging of Network Analyzer is not up to perfect condition, the spurious reduction and phase of signal source
Noise level is poor, limits its use under high frequency resolution application.Document [4] (clock wave .X wave band scalar net
The research University of Electronic Science and Technology Master's thesis of network analyzer, 2010) a set of scalar network measuring instrument is devised, it designs and excellent
Change signal source auto_steady amplitude device, and the method for having introduced a kind of measuring signal source reflection coefficient, effectively improves signal
Matching properties in a steady stream, and then end signal to be measured is decoupled using fixed attenuator, so as to improve load port matching
Performance reduces test macro measurement error as caused by the mismatch of port to greatest extent.Its hardware circuit is direct using radio frequency
Detection techniques, since detector diode is not in best shape in high band detection sensitivity deficiency and circuit design and debugging
State causes the Network Analyzer that can not detect the radiofrequency signal of the following intensity of -35dBm, and the test for significantly limiting instrument is dynamic
State range, instrument service performance limitation are larger.
In summary, commercial network analyzer is at high cost at present, can not arrange in producing line large area, it is difficult to adapt to microwave
The extensive debugging and production of product；And it is more demanding to ambient temperature and humidity, it is not suitable for the severe production environment such as producing line；In addition
It is more demanding to the technical level of user, be not suitable for producing line worker and use.And dedicated low cost simplifies Network Analyzer and sets
Meter focuses mostly in the low-frequency range testing field of tens to several hundred megahertzs；The spuious higher, phase of signal source used in simultaneously is made an uproar
Sound level is poor, seriously limits the use dynamic range and frequency resolution of Network Analyzer；In addition used high band
Detection sensitivity is insufficient, can not detect small-signal, limits the test dynamic range of instrument, instrument service performance limitation compared with
Greatly.
Utility model content
For the above-mentioned deficiency of microwave current Network Analyzer, the utility model provides a kind of simple X-band network analysis
Instrument.
The utility model realizes that its technical purpose technical solution is: a kind of simple X-band Network Analyzer, including microwave letter
It number generates and test module and Electronic Calibration module, and microwave signal is generated and test module and Electronic Calibration module carry out
The embedded scm module of control；It includes covering X wave that the microwave signal, which is generated with test module and Electronic Calibration module,
Microwave signal source, the synchronization local vibration source synchronous with the microwave signal source, four directional couplers, two ports, lists of section
Knife four-throw RF switch, frequency mixer, filter, logarithmic detector and AD sampler；Two directional couplers are for coupling one
Port input signal and output signal；It is selected in four directional couplers by the hilted broadsword four-throw RF switch of one-chip computer module control
One with the output of synchronous local vibration source connect frequency mixer mixing after by is formed after filter filtering 70M intermediate-freuqncy signal input logarithm
Wave detector measures power, and single-chip microcontroller processing display is entered after being AD converted subsequently into AD sampler.
The Network Analyzer frequency range of the utility model covers 8~12GHz, and signal source is real using crystal oscillator driving phaselocked loop in machine
Existing, signal source uses automatic amplitude control circuit, it is ensured that radio frequency output amplitude is stablized in Whole frequency band.And it is cheap, it is suitable for
It is used on production line.
Further, in above-mentioned simple X-band Network Analyzer: microwave signal source includes the first lock with synchronous local vibration source
Xiang Huan, the second phaselocked loop, crystal oscillator, splitter；
The output of the crystal oscillator is divided into two-way by splitter；
Microwave signal source is obtained by the first phaselocked loop all the way；Another way obtains synchronous local vibration source by the second phaselocked loop；
The accurate control module of amplitude is additionally provided on the microwave signal source.
Further, in above-mentioned simple X-band Network Analyzer: the accurate control module of the amplitude includes coupler
E, wave detector, amplitude precision control and numerical-control attenuator；The output end of the first phaselocked loop is arranged in the numerical-control attenuator,
The coupled signal that the coupler E carries out coupling acquisition to the first pll output signal is input to wave detector, wave detector
Output connects amplitude precision control, and amplitude precision control controls numerical-control attenuator, keeps output microwave signal amplitude accurate.
Below with reference to drawings and examples, the utility model is described in detail.
Detailed description of the invention
Fig. 1 is that microwave signal source generates and test module system in the simple X-band Network Analyzer of the utility model embodiment 1
System block diagram.
Fig. 2 is microwave signal source in Fig. 1 and synchronous local vibration source design frame chart.
Fig. 3 is single-chip microcontroller control and aobvious control touch screen signal in the simple X-band Network Analyzer of the utility model embodiment 1
Figure.
Fig. 4 is the simple X-band Network Analyzer calibration component block diagram of the utility model embodiment 1.
Fig. 5 is the calibration of the simple X-band Network Analyzer of the utility model embodiment 1 and testing process.
Specific embodiment
The present embodiment is a kind of simple X-band Network Analyzer,
A kind of simple X-band Network Analyzer, including microwave signal generates and test module and Electronic Calibration module, and
The embedded scm module that microwave signal generation and test module and Electronic Calibration module are controlled；Microwave signal generates
It as shown in Figure 1 include the microwave signal source for covering X-band with test module and Electronic Calibration module, synchronous with microwave signal source
Synchronous local vibration source, two ports (port 1 and port 2), hilted broadsword four-throw RF switch, mixes at four directional couplers (A, B, C, D)
Frequency device, filter, logarithmic detector and AD sampler；Two directional couplers are for coupling a port input signal and output
Signal；By one-chip computer module control hilted broadsword four-throw RF switch select four directional couplers in one with synchronous local vibration source
Output connect frequency mixer mixing after by is formed after filter filtering 70M intermediate-freuqncy signal input logarithmic detector measure power, so
Enter after AD sampler is AD converted afterwards and enters single-chip microcontroller processing display.
In the present embodiment, microwave signal source is generated and the system block diagram of test module is as shown in Figure 1, microwave signal source generates
The microwave signal source of X-band (8~12GHz) is covered, for the dynamic range for extending signal detection, X frequency range need to be downconverted to
70MHz intermediate frequency carries out detection, therefore goes back frequency source part and also need the synchronization local vibration source (local vibration source comprising 7.93~11.93GHz
Frequency sweep synchronous with microwave source, it is ensured that intermediate frequency output remains 70MHz).The present embodiment is the simple X-band Network Analyzer of two-way,
Therefore microwave signal source is divided by two-way using the single-pole double-throw switch (SPDT) of high-isolation, it is defeated from test port 1 and port 2 respectively
Out.
The critical elements of signal amplitude detection are directional coupler, direction isolation with higher and the stable degree of coupling
Index, for testing the forward and reverse microwave component flowed on microwave signal main transmission line.It include 4 in block diagram as shown in Figure 1
A directional coupler, when 1 output power of port, directional coupler A is used for the forward power of measurement port 1, and orients
Coupler B is used for the reverse transfer power of measurement port 1, and directional coupler C is used for the incident power of measurement port 2, if four
A directional coupler degree of coupling having the same, then the ratio between the measured value of coupler B and coupler A measured value are port 1
Reflect (i.e. S11), the ratio between measured value and coupler A measured value of coupler C are 2 transmission value (i.e. S of port 1 to port21).When
When 2 output power of port, directional coupler D is used for the forward power of measurement port 2, and directional coupler C is for measuring
The reverse transfer power of port 2, directional coupler B are used for the incident power of measurement port 1, then the measured value and coupling of coupler C
The ratio between clutch D measured value is reflection (the i.e. S of port 222), the ratio between measured value and coupler D measured value of coupler B are to hold
Mouth 2 to 1 transmission value (i.e. S of port12)。
For avoid because road amplitude-frequency response each caused by using multichannel down-conversion receiver it is inconsistent brought by test error,
The present embodiment gates the reception signal of four directional couplers A, B, C, D using the SP4D timesharing of hilted broadsword four-throw RF switch.Gating
Radiofrequency signal be mixed with local oscillation signal after its down-conversion signal taken using narrow band filter, then using logarithmic detector by microwave
Power signal is changed into voltage signal and samples for modulus conversion chip.The present embodiment is the simple X-band network analysis of two-way scalar
Instrument, only detects the power of signal, and loses phase information, and amplitude detection is realized in 70MHz intermediate frequency, thus is easy to using Larger Dynamic
Range wave detector realizes power detection, and the present embodiment is using the logarithmic detector of 90dB dynamic range, it can be achieved that power bracket-
The radio frequency signal amplitude detection of 80dBm~10dBm.
Microwave signal source is the core component of the present embodiment with synchronous local vibration source, as shown in Fig. 2, both using phaselocked loop
(PLL) it realizes, two phaselocked loops refer to same crystal oscillator source, and crystal oscillator needs can be used temperature compensating crystal oscillator (valence according to frequency stability
Lattice are low) or constant-temperature crystal oscillator (price is high).Microwave signal source generates the frequency sweep microwave signal of 8~12GHz, and synchronous local vibration source generates
7.93~11.93GHz covariant signal (differs 70MHz, i.e. IF frequency with microwave signal source).Microwave signal source needs accurate
Span of control limit of control, is configured with coupler detection, and the output power of real-time monitoring signal source then controls numerical-control attenuator if any fluctuation
Carry out power adjustment.Another effect of numerical-control attenuator is the output power in a wide range of adjustment signal source, in certain active electricity
In drive test examination (such as low-noise amplifier), needs to reduce the output power of signal source, active circuit is avoided to overdrive
Situation.The output power of signal source can be arranged by touch screen control panel, and output power is once reset, test macro state
Change, then simple X-band Network Analyzer needs to recalibrate, to guarantee that the stepping error of numerical-control attenuator can be eliminated.And it uses
In the numerical-control attenuator of fixed ampllitude, due to the amplitude very little (0.125~1dB) of adjustment, even if thus not recalibrating its test mistake
Difference is also within the scope of systematic error.
Embedded scm design scheme is as shown in figure 3, the division of its basic function is as follows: (1) controlling peripheral hardware hardware, include
Two-way serial ports peripheral hardware signal (SPI) is respectively used to control signal source and synchronous local vibration source frequency sweep, the general control port of multichannel
(GPIO) number, mould are set in the routing of each RF switch for microwave signal source and test module and the parallel port of numerical-control attenuator
Number conversion (AD) is used for the sampling and digitlization of logarithmic detector detecting circuit；(2) data processing, display and storage are realized, and
Pass through the interfaces such as network, USB, GPIB and extraneous realization information exchange；(3) instruction of touch screen is read in and display data output.
Embedded scm selected by the present embodiment is integrated with Uart serial ports, asynchronous serial communication Sci, Spi serial ports, AD
Conversion and several general input/output ports, maximum operating frequency 44MHz, the built-in space FLASH is 512k in piece
Store source program, can also storage section data, the non-volatile EEROM of plug-in 8M realizes the storage of big data quantity.The present embodiment uses
Parallel port touch screen realizes that test data pattern is shown and instrument parameter is arranged.The present embodiment selects 10.2 inches of very color touches
Screen, 1024x600 circle dot matrix, 64 grades of brightness of display screen are adjusted, and touch screen supports interface graphic operation, so that instrumentation pole
It is facilitated and intuitive.
Simple X-band Network Analyzer calibration component internal part is as shown in figure 5, separately include open device, short-circuiting device, matching
Load and four kinds of calibrator units of direct-through line select calibration access by a pair of of four throw switch of hilted broadsword, and each calibration component is with internal reference face 2
On the basis of, other than when calibration answers on the basis of the plane of reference 1, therefore calibrate the electrical length phase that should be deducted between the inside and outside plane of reference when resolving
It moves.
The simple X-band Network Analyzer of the present embodiment design, framework are commercial devices simply, using device, tool
There is advantage of low cost, it can be ensured that producing line large-scale use.Simple X-band Network Analyzer modules are set using totally-enclosed watertight
Meter, with external environs, resistance to various severe use environments improve the reliability and service life of product, also reduce
The maintenance cost of instrument itself.Simple X-band Network Analyzer designed by the present embodiment uses modularized design, facilitates daily
Maintenance, maintenance or replacement.
Simple X-band Network Analyzer software mainly realize bottom hardware function control, radio frequency detection, data processing and
The tasks such as testing journal sheet's generation.According to the process for using of instrument, the use of simple X-band Network Analyzer includes calibration, test
Several steps are shown with data processing: as shown in Figure 5:
1) it calibrates, calibration parameter, such as frequency range, frequency sweep points and frequency is arranged by touch screen control panel first
Source power etc.；Secondly, access Electronic Calibration part, calibrates open circuit, short circuit, matched load respectively and leads directly to, pass through internal arithmetic
Calculate the simple each error term of X-band Network Analyzer；
2) it tests, accesses part to be measured, control 1 transmission power of simple X-band Network Analyzer port first, test S11With
S21, 2 transmission power of secondary control simple X-band Network Analyzer port, test S12And S22；Next frequency sweep frequency point is changed to repeat
S parameter is tested, is scanned since originating frequency point again after frequency sweep；
3) data processing and display, simple X-band Network Analyzer often test the S parameter of a frequency point, i.e., at once into
Row data processing and real-time display (i.e. the data of the frequency point of update display).
The key point of the present embodiment:
The X-band scalar network analyzer of the present embodiment design uses modularized design, and maintenance, maintenance is convenient for routine maintenance
Equal work, are commercial devices using device, have advantage of low cost.
Simple X-band Network Analyzer hardware circuit and external environs designed by the present embodiment, it is resistance to various severe
Use environment.
Simple X-band Network Analyzer designed by the present embodiment shown using touch screen, easy to use, operation interface is simple
Clean, operator easily trains.
Simple X-band Network Analyzer designed by the present embodiment has multiple communication interface, compatible automatic test system
System, test data such as upload at the functions automatically.
Simple X-band Network Analyzer frequency range designed by the present embodiment covers 8~12GHz, and signal source is using brilliant in machine
Vibration driving phaselocked loop realizes that signal source uses automatic amplitude control circuit, it is ensured that radio frequency output amplitude is stablized in Whole frequency band.
Radio-frequency signal detection down-converts to intermediate frequency using signal in simple X-band Network Analyzer designed by the present embodiment
The amplitude detection mode of logarithmic detector is carried out again, is reached in link using the dynamic range of numerical-control attenuator further expansion system
90dBc。
Simple X-band Network Analyzer designed by the present embodiment realizes one using dedicated inexpensive electronics calibration component
Keyed calibration, improves testing efficiency.
The prior art is compared and is had a characteristic that
The X-band scalar network analyzer of the present embodiment design, framework are commercial devices simply, using device, tool
There is advantage of low cost, it can be ensured that every producing line even each debugging station can configure one.
Simple X-band Network Analyzer designed by the present embodiment uses totally-enclosed water-tight design, and external environs,
Resistance to various severe use environments, had both improved the reliability and service life of product, also reduce the maintenance of instrument itself at
This.
Simple X-band Network Analyzer designed by the present embodiment has modularized design, and maintenance, dimension is convenient for routine maintenance
The work such as repair.
Simple X-band Network Analyzer designed by the present embodiment is with easy to use, operation interface is succinct, operator
The features such as easily training, the producing line worker for being suitble to technical capability not high use.
Simple X-band Network Analyzer designed by the present embodiment has multiple communication interface, compatible automatic test system
System, test data such as upload at the functions automatically.
Simple X-band Network Analyzer frequency range designed by the present embodiment covers 8~12GHz, and signal source is using brilliant in machine
Vibration driving phaselocked loop realizes there is low phase noise, low spurious, and signal source uses automatic amplitude control circuit, really
Save radio frequency output amplitude in frequency band from damage to stablize.
Radio-frequency signal detection down-converts to intermediate frequency using signal in simple X-band Network Analyzer designed by the present embodiment
The amplitude detection mode of logarithmic detector is carried out again, is reached in link using the dynamic range of numerical-control attenuator further expansion system
90dBc。
Simple X-band Network Analyzer designed by the present embodiment realizes one using dedicated inexpensive electronics calibration component
Keyed calibration, improves testing efficiency.
Compared with the prior art, the simple X-band Network Analyzer of X-band scalar of the present embodiment design, framework is simple,
It is commercial devices using modularized design, using device, there is advantage of low cost, it can be ensured that every producing line even each debugging
Station can configure one.Simple X-band Network Analyzer uses totally-enclosed water-tight design, resistance to each with external environs
The severe use environment of kind, had both improved the reliability and service life of product, and had also reduced the maintenance cost of instrument itself；This
Simple X-band Network Analyzer designed by embodiment has the spies such as easy to use, operation interface is succinct, operator easily trains
Point, the producing line worker for being suitble to technical capability not high use；Simple X-band Network Analyzer frequency range covering designed by the present embodiment
8~12GHz, signal source realizes there is low phase noise, low spurious, and signal using crystal oscillator driving phaselocked loop in machine
Source uses automatic amplitude control circuit, it is ensured that radio frequency output amplitude is stablized in Whole frequency band；Simple X-band designed by the present embodiment
Radio-frequency signal detection down-converts to the amplitude detection mode that intermediate frequency carries out logarithmic detector again, link using signal in Network Analyzer
The middle dynamic range using numerical-control attenuator further expansion system reaches 90dBc；Simple X-band net designed by the present embodiment
Network analyzer is realized one-touch calibration, is improved the service efficiency of instrument using dedicated inexpensive electronics calibration component.
Claims (3)
1. a kind of simple X-band Network Analyzer, including microwave signal generates and test module and Electronic Calibration module and right
The embedded scm module that microwave signal generates and test module and Electronic Calibration module are controlled；It is characterized by: institute
The microwave signal stated generate and test module and Electronic Calibration module include covering X-band microwave signal source, with it is described micro-
The synchronous synchronization local vibration source of wave signal source, four directional couplers, two ports, hilted broadsword four-throw RF switch, frequency mixer, filtering
Device, logarithmic detector and AD sampler；Two directional couplers are for coupling a port input signal and output signal；By list
The hilted broadsword four-throw RF switch of piece machine module control selects one in four directional couplers to connect with the output of synchronous local vibration source
By forming 70M intermediate-freuqncy signal input logarithmic detector measurement power after filter filtering after frequency mixer mixing, subsequently into AD
Sampler enters single-chip microcontroller processing display after being AD converted.
2. simple X-band Network Analyzer according to claim 1, it is characterised in that: microwave signal source and synchronous local oscillator
Source includes the first phaselocked loop, the second phaselocked loop, crystal oscillator, splitter；
The output of the crystal oscillator is divided into two-way by splitter；
Microwave signal source is obtained by the first phaselocked loop all the way；Another way obtains synchronous local vibration source by the second phaselocked loop；
The accurate control module of amplitude is additionally provided on the microwave signal source.
3. simple X-band Network Analyzer according to claim 2, it is characterised in that: the amplitude accurately controls mould
Block includes coupler E, wave detector, amplitude precision control and numerical-control attenuator；The numerical-control attenuator setting is in the first lock
The output end of phase ring, the coupled signal that the coupler E carries out coupling acquisition to the first pll output signal are input to inspection
Wave device, the output of wave detector connect amplitude precision control, and amplitude precision control controls numerical-control attenuator, make to export microwave signal
Amplitude is accurate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965605A (en) * | 2020-02-28 | 2020-11-20 | 加特兰微电子科技(上海)有限公司 | Frequency modulated continuous wave signal transmitting device, method of transmitting frequency modulated continuous wave signal, signal transmitting/receiving device, electronic device, and apparatus |
| CN112051534A (en) * | 2020-08-31 | 2020-12-08 | 中电科仪器仪表有限公司 | External device and method for improving measurement and calibration precision of microwave network |
| CN113390899A (en) * | 2021-06-01 | 2021-09-14 | 中国科学院合肥物质科学研究院 | Microwave reflectometer with online automatic calibration function |
| CN114062720A (en) * | 2021-10-20 | 2022-02-18 | 深圳市圣格特电子有限公司 | Microwave network analyzer strength parameter analysis method and microwave network analyzer |
| CN114696923A (en) * | 2020-12-28 | 2022-07-01 | 北京振兴计量测试研究所 | Microwave attenuation measuring instrument |
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2018
- 2018-09-11 CN CN201821481838.7U patent/CN208597083U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965605A (en) * | 2020-02-28 | 2020-11-20 | 加特兰微电子科技(上海)有限公司 | Frequency modulated continuous wave signal transmitting device, method of transmitting frequency modulated continuous wave signal, signal transmitting/receiving device, electronic device, and apparatus |
| CN111965605B (en) * | 2020-02-28 | 2024-04-12 | 加特兰微电子科技(上海)有限公司 | Frequency modulation continuous wave signal transmitting device, method for transmitting frequency modulation continuous wave signal, signal transmitting/receiving device, electronic device and equipment |
| CN112051534A (en) * | 2020-08-31 | 2020-12-08 | 中电科仪器仪表有限公司 | External device and method for improving measurement and calibration precision of microwave network |
| CN114696923A (en) * | 2020-12-28 | 2022-07-01 | 北京振兴计量测试研究所 | Microwave attenuation measuring instrument |
| CN113390899A (en) * | 2021-06-01 | 2021-09-14 | 中国科学院合肥物质科学研究院 | Microwave reflectometer with online automatic calibration function |
| CN113390899B (en) * | 2021-06-01 | 2022-08-23 | 中国科学院合肥物质科学研究院 | Microwave reflectometer with online automatic calibration function |
| CN114062720A (en) * | 2021-10-20 | 2022-02-18 | 深圳市圣格特电子有限公司 | Microwave network analyzer strength parameter analysis method and microwave network analyzer |
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