CN108768532A - A kind of linear FM signal terminates Frequency point device for fast detecting and method - Google Patents
A kind of linear FM signal terminates Frequency point device for fast detecting and method Download PDFInfo
- Publication number
- CN108768532A CN108768532A CN201810563938.2A CN201810563938A CN108768532A CN 108768532 A CN108768532 A CN 108768532A CN 201810563938 A CN201810563938 A CN 201810563938A CN 108768532 A CN108768532 A CN 108768532A
- Authority
- CN
- China
- Prior art keywords
- signal
- linear
- photoswitch
- frequency point
- delay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
A kind of linear FM signal terminates Frequency point device for fast detecting and method, including：Signal distribution unit, for the linear FM signal of reception to be divided into two-way；Photoelectricity delay cell, wherein signal progress electric light, photoelectric conversion and the delay all the way for exporting the signal distribution unit；Microwave mixer unit, for the linear FM signal that the photoelectricity delay cell exports to be carried out down coversion with the former linear FM signal that the signal distribution unit exports；Useful signal acquiring unit, the signal for exporting the microwave mixer unit is filtered, detection, it is reversed after output fixed frequency intermediate-freuqncy signal；Shaping and trigger element, the output of pulse signal for will there is the signal of the useful signal acquiring unit output to become regular shape；It is high and the features such as fiber lengths are adjustable, delay accuracy is high using electric light/photoelectric conversion real-time, it is organically combined by the methods of analog frequency mixing, filtering, detection, improves real-time and the accuracy for terminating Frequency point detection to linear FM signal.
Description
Technical field
The invention belongs to frequency microwave technical field of measurement and test, and in particular to a kind of linear FM signal termination Frequency point is quick
Detection device and method.
Background technology
Traditional needs to convert firstly the need of by linear FM signal to linear FM signal termination frequency point detecting method
For two-way I/Q linear FM signals, then acquisition, the operation in multiple periods are carried out to two-way i/q signal, finally obtain the phase of signal
Position information.At the time of phase information by constantly comparing previous moment and current time obtains SPA sudden phase anomalies, operand is big, divides
It is slower to analyse speed；Since in the case where sweeping pattern soon, quickly, data acquisition channel sample rate is not often caught up with rate linear FM signal
The rate of frequency variation, is easily lost certain Frequency point information, and real-time is not high, eventually leads to and terminates Frequency point detection moment not
It is accurate.
Traditional terminates frequency point detection device access since there are 4 road i/q signal accesses, hardware to linear FM signal
Placement-and-routing and software compensation propose very high challenge, are had differences between each road, and synchronism is not high, cause finally to calculate
Phase error is big.
In conclusion existing need to carry out the multicycle to linear FM signal termination frequency point detecting method and device
Data acquisition, is compared at operation, and detection speed is slow；There are intrinsic error between channel in test device, poor synchronization, finally
Cause testing result inaccurate.
Invention content
In order to solve the above technical problems, proposing a kind of linear FM signal terminates Frequency point rapid detection method and dress
Set, it is high and the features such as fiber lengths are adjustable, delay accuracy is high using electric light/photoelectric conversion real-time, by analog frequency mixing,
The methods of filtering, detection organically combine, and improve real-time and the accuracy that Frequency point detection is terminated to linear FM signal.
The present invention uses following technical scheme：
A kind of linear FM signal termination Frequency point device for fast detecting, including：
Signal distribution unit, for the linear FM signal of reception to be divided into two-way；
Photoelectricity delay cell, for by the signal distribution unit export wherein all the way signal carry out electric light, photoelectricity turn
Change and is delayed；
Microwave mixer unit, the linear FM signal for exporting the photoelectricity delay cell are distributed single with the signal
The former linear FM signal of member output carries out down coversion；
Useful signal acquiring unit, the signal for exporting the microwave mixer unit is filtered, detection, it is reversed after
Export the intermediate-freuqncy signal of fixed frequency；
Shaping and trigger element, the arteries and veins for will there is the signal of the useful signal acquiring unit output to become regular shape
Rush signal output；It is sequentially connected by radio-frequency cable and conducting wire between each unit.
Power supply unit, for providing DC level signal with trigger element to photoelectricity delay cell and shaping；
The signal distribution unit includes 1 point of 2 power splitter.
The photoelectricity delay unit includes optic fiber transceiver module, the first photoswitch, fiber matrix, the second photoswitch, optical fiber
Sending module, low-pass filtering module, the first toggle switch, the second toggle switch, the optic fiber transceiver module, the first photoswitch,
Fiber matrix, the second photoswitch, optical fiber sending module, low-pass filtering module are sequentially connected, first toggle switch and first
Photoswitch connection, the second toggle switch are connect with the second photoswitch；The optical fiber receives mould and is used for the signal distribution unit
The electric signal of output is converted into optical signal, and the optical fiber sending module converts optical signal into electric signal, the low-pass filtering mould
Block includes low-pass filter, the break-make of the toggle switch control photoswitch different port.
The microwave mixer unit includes the frequency mixer and low-pass filter being connected with each other.
The useful signal acquiring unit includes sequentially connected bandpass filter, power detector, reversed operation
Amplifier.
The signal shaping and trigger element include sequentially connected comparator, edge triggered flip flop, driver.
A kind of linear FM signal termination Frequency point rapid detection method, includes the following steps：
Step 1：The linear FM signal of reception is divided into two-way；
Step 2：Signal all the way in the two paths of signals is subjected to electric light, photoelectric conversion and delay；
Step 3：Electric light, photoelectric conversion and delay will be passed through described in another way original linear FM signal and step 2
FM signal later is mixed；
Step 4：Linear FM signal after mixing is obtained, garbage signal is filtered out, obtains useful linear frequency modulation in real time
The amplitude change information of signal；
Step 5：The useful linear FM signal is become to the output of pulse signal of regular shape.
The signal all the way in the two paths of signals is subjected to electric light, photoelectric conversion and the process of delay in the step 2
For：
The signal all the way is converted to optical signal using optic fiber transceiver module to send to the input port of the first photoswitch, institute
The output port for stating the first photoswitch is connected to the corresponding input port of fiber matrix respectively；
Using the first toggle switch, the break-make that different symbols controls the different output port of the first photoswitch is set；
Fiber matrix output port is connected to the input port of the second photoswitch respectively, and the output port of the second photoswitch is connected to
Optical fiber sending module；
Using the second toggle switch, the break-make that different symbols controls the different input ports of the second photoswitch is set；
Optical fiber sending module converts the optical signal to electric signal and send to the input port of low-pass filter；Using described
Low-pass filter filters out higher hamonic wave.
The process being mixed in the step 3 is：Using frequency mixer by former linear FM signal and it is described by electric light, light
After linear FM signal after electrotransformation and delay is mixed, the difference of the two paths of signals is obtained by low-pass filter
Frequently.
The process obtained to linear FM signal after mixing in the step 4 is：Pass through bandpass filter and power
The mode that wave detector is combined obtains the useful linear FM signal after mixing, filters out garbage signal, obtains in real time
The amplitude change information of useful linear FM signal；One is generated at the time of the level direction of power detector output changes
A edge, at the time of correspondence at the time of by capturing edge variation to obtain linear FM signal termination Frequency point.
Beneficial effects of the present invention：
Apparatus of the present invention are core according to photoelectricity delay cell, useful signal acquiring unit, according to certain control and connection
Relationship makes this device automatic work, and by oscillograph or monitor supervision platform detect in real time trigger pulse generation when
It carves, since whole device carries out modular combination design using modules such as microwave, photoelectricity, whole device is small, dismantles
Convenient, test device is convenient for integrated and repair.Using the device to test different bandwidth linear FM signal when, demand will dial
Code switch is placed in corresponding position and can complete to test.
The method of the present invention：1, detection efficiency is improved.Automatic be rapidly completed terminates arbitrary bandwidth linear frequency modulation signal
Frequency corresponds to the detection at moment, and detection efficiency is very high, real-time.2, accuracy in detection is improved.Due to accurate using optical fiber
The method of delay can obtain the precise frequencies information of intermediate-freuqncy signal, at the time of correspondence to obtain accurate termination Frequency point,
The error between channel during being acquired using I/Q data is eliminated, accuracy of measurement is improved.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Linear FM signal traditional Fig. 1 terminates frequency point detection device composition schematic diagram
A kind of linear FM signals of Fig. 2 terminate Frequency point device for fast detecting composition schematic diagram
It is signal distribution unit composition schematic diagram in Fig. 3 dotted line frames
It is photoelectricity delay unit composition schematic diagram in Fig. 4 dotted line frames
It is microwave mixer unit composition schematic diagram in Fig. 5 dotted line frames
It is useful signal acquiring unit composition schematic diagram in Fig. 6 dotted line frames
It is signal shaping and trigger element composition schematic diagram in Fig. 7 dotted line frames
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, traditional test device and method have following shortcoming：1) real-time it is not high,
Efficiency is low；2) channel error is big, calibration difficulties.The present invention proposes a kind of linear FM signal and terminates the Frequency point quickly side of detection
Method and device.The present invention both at home and abroad terminates linear FM signal in abundant research on the basis of frequency detecting method and device present situation
On, it is this correspondence of fixed value using linear FM signal adjacent moment difference on the frequency, it is frequency that will finally detect frequency translation
Rate difference obtains linear FM signal and terminates dot frequency eventually by obtaining at the time of frequency-splitting corresponds to.
Existing linear FM signal terminates Frequency point device for fast detecting as shown in Figure 1, mainly by microwave mixer, filter
The units such as wave device, automatic gain control unit, 2 channel adc circuits, CPU processing units form.
A kind of typical embodiment of the present invention is quickly examined as shown in Fig. 2, a kind of linear FM signal terminates Frequency point
Device is surveyed, the present invention is by concluding the existing device and method for terminating frequency detecting to linear FM signal, with light
Electricity delay and power detection are core, entire test device are divided into relatively independent unit, whole device is distributed by signal
The groups such as unit, photoelectricity delay unit, microwave mixer unit, useful signal acquiring unit, shaping and trigger element, power supply unit
At being attached by radio-frequency cable and conducting wire between each unit.
Signal distribution unit is made of 1 point of 2 power splitter, and linear FM signal is divided into two-way by 1 point of 2 power splitter, wherein one
The delay in addition sent all the way as local oscillator to photoelectricity delay cell and carry out signal is sent to microwave mixer unit in road；Photoelectricity delay is single
Member is mainly made of optic fiber transceiver module, photoswitch 1, fiber matrix, photoswitch 2, optical fiber sending module, low-pass filter, main
Complete photoelectricity/electric light conversion and the setting of Variable delay；Microwave mixer unit is made of frequency mixer, mainly distributes signal
The linear FM signal of unit and the two-way different frequency of photoelectricity delay cell output carries out down coversion, and two-way swept-frequency signal is become
For the intermediate-freuqncy signal of a fixed-bandwidth；Useful signal acquiring unit is mainly by bandpass filter, power detector, reversed operation
Composition, mainly by being filtered of the signal with harmonic wave that microwave mixer unit exports, detection, it is reversed after output fixed frequency
Intermediate-freuqncy signal；Signal shaping is made of with trigger element comparator, edge triggered flip flop, driver, mainly obtains useful signal
It takes the pulse signal in irregular shape that unit exports to carry out the processing such as shaping, digitlization, enhancing driving, becomes a shape rule
Output of pulse signal then；Power supply unit is made of power supply adaptor, it is carried to photoelectricity delay cell and shaping with trigger element
For+5VDC DC level signals.
In dotted line frame as shown in Figure 3, signal distribution unit is made of 1 point of 2 power splitter, mainly believes the linear frequency modulation of reception
Number it is divided into two-way, wherein being sent all the way to the LO input terminals of microwave mixer unit as local oscillation signal, in addition believes all the way as radio frequency
It number send to the RF signals of microwave mixer unit.
In dotted line frame as shown in Figure 4, photoelectricity delay unit is by optic fiber transceiver module, photoswitch 1, toggle switch 1, optical fiber square
Battle array, photoswitch 2, toggle switch 2, optical fiber sending module, low-pass filtering module composition, it is main to complete what signal distribution unit exported
The wherein delay of signal all the way, delay time temporarily fix 6 constant time lags.
Optic fiber transceiver module converts the microwave signal chirped all the way that signal distribution unit exports to optical signal and send
To the input port of photoswitch 1, the output of photoswitch 1 has 6 ports to be connected to corresponding 6 input ports of fiber matrix respectively.
The break-make that toggle switch 1 controls the different output port of photoswitch 1 by setting different symbols.6 ends of fiber matrix output
Mouth is connected to 6 input ports of photoswitch 2 respectively, and the output port of photoswitch 2 is connected to optical fiber sending module.Toggle switch 2 is logical
Cross the break-make for the different input ports for setting different symbol control photoswitches 2.The optical fiber interface that photoswitch 2 exports is connected to optical fiber
The light input port of sending module, optical fiber sending module convert optical signal into electric signal (microwave signal) and send to low-pass filter
Input port.Since there are non-linear, optical fiber sending module outputs for photoelectricity/electric light transform portion in entire photoelectricity delay cell
Electric signal there are 2 subharmonic and 3 rd harmonic signals, filter out higher hamonic wave using low-pass filter, it is logical to retain useful signal
It crosses, the linear FM signal of low-pass filter output is finally sent to the RF input ports of microwave mixer unit.
In dotted line frame as shown in Figure 5, microwave mixer unit is made of microwave mixer and low-pass filter, mainly by light
Signal after electric delay is mixed with undelayed former linear FM signal, and obtains two paths of signals by low-pass filter
Difference frequency.
In dotted line frame as shown in Figure 6, useful signal acquiring unit is put by bandpass filter, power detector, direction operation
Big device composition, the main amplitude information for obtaining useful signal.
Bandpass filter selects centre frequency for 10.7MHz, -1dB bandwidth >=10MHz narrow band filters, bandpass filter
Mainly filter out the frequency signal outside intermediate zone after being mixed；The signal amplitude that power detector exports bandpass filter is examined
It surveys, takes out the corresponding low and high level of amplitude information, since the level of power detector output is that negative and signal amplitude is attenuated,
Power detector output add to reversed operational amplifier into line level reversely with amplification, the connection of reversed opamp-output signal
To shaping and trigger element.
In dotted line frame as shown in Figure 7, signal shaping is made of with trigger element comparator, edge triggered flip flop, driver, main
Convert analog signal in irregular shape to the digital signal of regular shape, comparator is by high-precision zero-crossing comparator group
At the conversion of the main sine wave signal for completing input to square-wave signal, comparator exports an analog square wave signal.It is terrible
To the square-wave signal of regular shape, comparator output is connected to edge triggered flip flop.
Edge triggered flip flop is made of high speed d type flip flop, the main Edge check for completing square-wave signal, one arteries and veins of final output
Signal is rushed to send to driver.
Driver is made of Special Purpose Programmable clock chip, and the driver driving capability is strong, and stability is high, can make input
Pulse signal does not occur phase offset and sends rear class to, ensures back-end processor or detection circuit normal work.
Its main workflow of the present apparatus is as follows：When working first, linear FM signal is input to the line of the device
Property FM signal input terminal, output end are connected to the signal input of oscillograph or user's control platform, toggle switch are pressed
The relationship of bandwidth and delay according to linear FM signal is placed in corresponding position, and power supply adaptor is connected to installation's power source input
Mouthful, the triggering of setting oscillograph source is channel 1, is powered on, whole device is with regard to automatic work.
Another typical embodiment of the invention, a kind of linear FM signal termination Frequency point rapid detection method, packet
Include following steps：
Step 1：The linear FM signal of reception is divided into two-way；
Step 2：Signal all the way in the two paths of signals is subjected to electric light, photoelectric conversion and delay；
Step 3：Electric light, photoelectric conversion and delay will be passed through described in another way original linear FM signal and step 2
FM signal later is mixed；
Step 4：Linear FM signal after mixing is obtained, garbage signal is filtered out, obtains useful linear frequency modulation in real time
The amplitude change information of signal；
Step 5：The useful linear FM signal is become to the output of pulse signal of regular shape.
The signal all the way in the two paths of signals is subjected to electric light, photoelectric conversion and the process of delay in the step 2
For：
The signal all the way is converted to optical signal using optic fiber transceiver module to send to the input port of photoswitch 1, it is described
The output port of photoswitch 1 is connected to the corresponding input port of fiber matrix respectively；
Using toggle switch 1, the break-make that different symbols controls the different output port of photoswitch 1 is set；
Fiber matrix output port is connected to the input port of photoswitch 2 respectively, and the output port of photoswitch 2 is connected to optical fiber hair
Send module；
The break-make for controlling the different input ports of photoswitch 2 by setting different symbols using toggle switch 2；
Optical fiber sending module converts the optical signal to electric signal and send to the input port of low-pass filter；Using described
Low-pass filter filters out higher hamonic wave.
The process being mixed in the step 3 is：Using frequency mixer by former linear FM signal and it is described by electric light, light
After FM signal after electrotransformation and delay is mixed, the difference frequency of the two paths of signals is obtained by low-pass filter.
The process obtained to linear FM signal after mixing in the step 4 is：Pass through bandpass filter and power
The mode that wave detector is combined obtains the useful linear FM signal after mixing, filters out garbage signal, obtains in real time
The amplitude change information of useful signal；An edge is generated at the time of the level direction of power detector output changes,
At the time of correspondence at the time of by capturing edge variation to obtain linear FM signal termination Frequency point.
The present invention key point be：Utilize linear FM signal and the linear FM signal after certain time delay
The mode being mixed obtains frequency-splitting information.
The variation relation for detecting linear FM signal energy in real time using power detector, when the electricity of power detector output
Square at the time of changing generate an edge, by capture edge variation at the time of to obtain linear FM signal end
At the time of only Frequency point corresponds to.
The useful linear FM signal after mixing is carried out in such a way that bandpass filter device and wave detector are combined
It obtains, filters out garbage signal, obtain the amplitude change information of useful signal in real time.
Using unit module organic assembling, realizes and the linear FM signal termination Frequency point of different bandwidth is quickly examined
It surveys, current detectable frequency bandwidth is up to 4GHz, by the different photoelectricity delay cells of replacement, it can be achieved that the line of arbitrary bandwidth
Property FM signal terminate Frequency point quick detection, have very strong versatility.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of linear FM signal terminates Frequency point device for fast detecting, which is characterized in that including：
Signal distribution unit, for the linear FM signal of reception to be divided into two-way；
Photoelectricity delay cell, the signal all the way for exporting the signal distribution unit carry out electric light, photoelectric conversion and prolong
When；
Microwave mixer unit, the linear FM signal for exporting the photoelectricity delay cell are defeated with the signal distribution unit
The another way original linear FM signal gone out carries out down coversion；
Useful signal acquiring unit, the signal for exporting the microwave mixer unit are filtered, detection, reversely export afterwards
The intermediate-freuqncy signal of fixed frequency；
Shaping and trigger element, for believing the pulse for thering is the signal of the useful signal acquiring unit output to become regular shape
Number output；It is sequentially connected by radio-frequency cable and conducting wire between each unit；
Power supply unit, for providing DC level signal with trigger element to photoelectricity delay cell and shaping.
2. a kind of linear FM signal as described in claim 1 terminates Frequency point device for fast detecting, which is characterized in that described
Signal distribution unit includes 1 point of 2 power splitter.
3. a kind of linear FM signal as described in claim 1 terminates Frequency point device for fast detecting, which is characterized in that described
Photoelectricity delay unit includes optic fiber transceiver module, the first photoswitch, fiber matrix, the second photoswitch, optical fiber sending module, low pass
Filter module, the first toggle switch, the second toggle switch, the optic fiber transceiver module, the first photoswitch, fiber matrix, second
Photoswitch, optical fiber sending module, low-pass filtering module are sequentially connected, and first toggle switch connect with the first photoswitch,
Two toggle switch are connect with the second photoswitch；The optical fiber receives the electric signal that mould is used to export the signal distribution unit and turns
Optical signal is turned to, the optical fiber sending module converts optical signal into electric signal, and the low-pass filtering module includes low-pass filtering
Device, the break-make of the toggle switch control photoswitch different port.
4. a kind of linear FM signal as described in claim 1 terminates Frequency point device for fast detecting, which is characterized in that described
Microwave mixer unit includes the frequency mixer and low-pass filter being connected with each other.
5. a kind of linear FM signal as described in claim 1 terminates Frequency point device for fast detecting, which is characterized in that described
Useful signal acquiring unit includes sequentially connected bandpass filter, power detector, reversed operational amplifier.
6. a kind of linear FM signal as described in claim 1 terminates Frequency point device for fast detecting, which is characterized in that described
Signal shaping and trigger element include sequentially connected comparator, edge triggered flip flop, driver.
7. a kind of linear FM signal terminates Frequency point rapid detection method, which is characterized in that include the following steps：
Step 1：The linear FM signal of reception is divided into two-way；
Step 2：Signal all the way in the two paths of signals is subjected to electric light, photoelectric conversion and delay；
Step 3：It will pass through described in another way original linear FM signal and step 2 after electric light, photoelectric conversion and delay
Linear FM signal be mixed.
Step 4：Linear FM signal after mixing is obtained, garbage signal is filtered out, obtains useful linear FM signal in real time
Amplitude change information；
Step 5：The useful linear FM signal is become to the output of pulse signal of regular shape.
8. a kind of linear FM signal as claimed in claim 7 terminates Frequency point rapid detection method, which is characterized in that described
The signal all the way in the two paths of signals, which is carried out electric light, photoelectric conversion and the process of delay, in step 2 is：
The signal all the way is converted to optical signal using optic fiber transceiver module to send to the input port of the first photoswitch, described
The output port of one photoswitch is connected to the corresponding input port of fiber matrix respectively；
Using the first toggle switch, the break-make that different symbols controls the different output port of the first photoswitch is set；
Fiber matrix output port is connected to the input port of the second photoswitch respectively, and the output port of the second photoswitch is connected to optical fiber
Sending module；
Using the second toggle switch, the break-make that different symbols controls the different input ports of the second photoswitch is set；
Optical fiber sending module converts the optical signal to electric signal and send to the input port of low-pass filter；Utilize the low pass
Filter filters out higher hamonic wave.
9. a kind of linear FM signal as claimed in claim 7 terminates Frequency point rapid detection method, which is characterized in that described
The process being mixed in step 3 is：Using frequency mixer by the former linear FM signal and it is described by electric light, photoelectric conversion with
And after the linear FM signal after delay is mixed, the difference frequency of two paths of signals is obtained by low-pass filter.
10. a kind of linear FM signal as claimed in claim 7 terminates Frequency point rapid detection method, which is characterized in that institute
Stating the process obtained to linear FM signal after mixing in step 4 is：It is mutually tied with power detector by bandpass filter
The mode of conjunction obtains the useful linear FM signal after mixing, filters out garbage signal, obtains useful linear tune in real time
The amplitude change information of frequency signal；An edge is generated at the time of the level direction of power detector output changes, is led to
At the time of correspondence at the time of crossing the variation of capture edge to obtain linear FM signal termination Frequency point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563938.2A CN108768532B (en) | 2018-06-04 | 2018-06-04 | A kind of linear FM signal terminates Frequency point device for fast detecting and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563938.2A CN108768532B (en) | 2018-06-04 | 2018-06-04 | A kind of linear FM signal terminates Frequency point device for fast detecting and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108768532A true CN108768532A (en) | 2018-11-06 |
| CN108768532B CN108768532B (en) | 2019-11-05 |
Family
ID=64002686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810563938.2A Expired - Fee Related CN108768532B (en) | 2018-06-04 | 2018-06-04 | A kind of linear FM signal terminates Frequency point device for fast detecting and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108768532B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855272A (en) * | 2019-10-29 | 2020-02-28 | 张乖云 | Square wave generating and multi-output device, system and method |
| CN111829562A (en) * | 2020-06-12 | 2020-10-27 | 东南大学 | Sensing measurement device and method based on photoelectric oscillator |
| CN115483982A (en) * | 2022-08-30 | 2022-12-16 | 西北核技术研究所 | Analog optical link input signal measuring method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120282869A1 (en) * | 2010-04-20 | 2012-11-08 | Rf Micro Devices, Inc. | Rf pa linearity requirements based converter operating mode selection |
| CN103646011A (en) * | 2013-12-09 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Signal spectrum zooming method based on linear frequency modulation z transform |
| CN104124966A (en) * | 2014-07-21 | 2014-10-29 | 中国电子科技集团公司第四十一研究所 | Direct frequency synthesis method for producing liner frequency modulation signal |
| CN104391298A (en) * | 2014-11-28 | 2015-03-04 | 中国电子科技集团公司第三十八研究所 | Digital delaying compensation device and method and achieving device and method |
| CN106569184A (en) * | 2016-11-15 | 2017-04-19 | 河海大学 | Interference method for linear frequency modulation radar |
-
2018
- 2018-06-04 CN CN201810563938.2A patent/CN108768532B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120282869A1 (en) * | 2010-04-20 | 2012-11-08 | Rf Micro Devices, Inc. | Rf pa linearity requirements based converter operating mode selection |
| CN103646011A (en) * | 2013-12-09 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Signal spectrum zooming method based on linear frequency modulation z transform |
| CN104124966A (en) * | 2014-07-21 | 2014-10-29 | 中国电子科技集团公司第四十一研究所 | Direct frequency synthesis method for producing liner frequency modulation signal |
| CN104391298A (en) * | 2014-11-28 | 2015-03-04 | 中国电子科技集团公司第三十八研究所 | Digital delaying compensation device and method and achieving device and method |
| CN106569184A (en) * | 2016-11-15 | 2017-04-19 | 河海大学 | Interference method for linear frequency modulation radar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855272A (en) * | 2019-10-29 | 2020-02-28 | 张乖云 | Square wave generating and multi-output device, system and method |
| CN111829562A (en) * | 2020-06-12 | 2020-10-27 | 东南大学 | Sensing measurement device and method based on photoelectric oscillator |
| CN115483982A (en) * | 2022-08-30 | 2022-12-16 | 西北核技术研究所 | Analog optical link input signal measuring method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108768532B (en) | 2019-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108768532B (en) | A kind of linear FM signal terminates Frequency point device for fast detecting and method | |
| CN108614162B (en) | Microwave photon vector network analysis device and method for measuring scattering parameters of microwave device | |
| CN107239611B (en) | Vector signal analysis device and method | |
| CN107121609A (en) | A kind of electric network impedance on-line identification method and device that injection is disturbed based on PRBS | |
| CN201438201U (en) | Secondary loop circuit voltage drop synchronous detection device for voltage mutual inductor | |
| CN209250655U (en) | A kind of the high speed code error tester and test macro of production test | |
| CN208597083U (en) | A kind of simple X-band Network Analyzer | |
| CN101504428A (en) | Electronic measurement method and multifunctional electronic measuring instrument | |
| CN104808056A (en) | Frequency characteristic testing method and device based on comparator conversion | |
| CN107677982A (en) | A kind of digitalized electrical energy meter on-site calibrating method and device | |
| CN110488086A (en) | The power measurement method and system of burst pulse | |
| CN109917264A (en) | A kind of converter valve thyristor level short-circuit test device and method | |
| CN109406888A (en) | A kind of active phase array antenna transmitting pattern test method and system | |
| CN201859177U (en) | Measurement module for low-frequency alternating current signal in relay protection device | |
| CN102590617B (en) | Method for realizing output of double sources of frequency spectrograph by using integrated broadband local oscillator and switch filter array | |
| CN101655522B (en) | Method for realizing impedance matching of electromagnetic immunity filter and corresponding measuring system | |
| CN105510861B (en) | A kind of multifunction digital PD meter calibrator | |
| CN205246757U (en) | Electric energy meter signal acquisition metering modules | |
| CN206292324U (en) | A kind of frequency-characteristic measuring-testing instrument | |
| CN205157646U (en) | Electric energy metering circuit based on voltage controlled oscillator | |
| CN114069608B (en) | Voltage-based distributed type platform area identification method | |
| CN201947268U (en) | Testing device for QSFP (quad small form-factor pluggable) module | |
| CN211481485U (en) | Device for supporting blind search switching of different communication systems by full-system frequency scanner | |
| CN209017015U (en) | A kind of adjustable pulse counting equipment of output elementary errors | |
| CN107091956A (en) | A kind of method and circuit for measuring network phase shift parameters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |