CN206226630U - A kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals - Google Patents
A kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals Download PDFInfo
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- CN206226630U CN206226630U CN201621179468.2U CN201621179468U CN206226630U CN 206226630 U CN206226630 U CN 206226630U CN 201621179468 U CN201621179468 U CN 201621179468U CN 206226630 U CN206226630 U CN 206226630U
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Abstract
The utility model belongs to signal synthesis measuring terminals technical field,More particularly to a kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals,Including DVBC signals and DTMB signals mixting circuit and the IF signal processing circuit of intermediate frequency of declining high,The IF signal processing circuit of intermediate frequency includes DVBC and DTMB signal separation units,Peak detection control unit,CPU,Display unit,The DVBC signals and DTMB signal separation units are output in peak detection control unit,The peak detection control unit is output in CPU,The CPU is output in display unit,The utility model solves prior art, and to there is integrated level low,Extended capability difference and the ineffective problem of engineering staff's debugging and measurement,Operating efficiency with effectively lifting engineering staff debugging and measurement,Improve the integrated level of system,Improve the stability of system,Improve the precision of system,The Advantageous Effects of the demodulation ability of system are improve while reducing systematic error.
Description
Technical field
The utility model belongs to signal synthesis measuring terminals technical field, more particularly to a kind of based on peak detection technology
DVBC signals and DTMB signal synthesis measuring terminals
Background technology
At present, existing measuring terminals include DVBC measuring terminals, DVBT measuring terminals, DTMB measuring terminals, ISDBT measurements
Terminal, prior art there are problems that integrated level is low, extended capability is poor and engineering staff's debugging and measurement it is ineffective.
Utility model content
The utility model provides a kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals, with
Solve to propose prior art in above-mentioned background technology and there is low integrated level, poor extended capability and engineering staff's debugging and measure
Ineffective problem.
The technical problem that the utility model is solved is realized using following technical scheme：One kind is based on peak detection technology
DVBC signals and DTMB signal synthesis measuring terminals, including DVBC signals and DTMB signals mixting circuit and the IF intermediate frequencies letter of declining high
Number process circuit, the IF signal processing circuit of intermediate frequency include DVBC and DTMB signal separation units, peak detection control unit,
CPU, display unit；
The DVBC signals and DTMB signal separation units are output in peak detection control unit, the peak detection control
Unit is output in CPU, and the CPU is output in display unit.
Further, the DVBC signals and the DTMB signals mixting circuit that declines high include DVBC signals and DTMB signals mixing electricity
Road, impedance matching circuit and the first wave filter, rail voltage sample circuit；
The DVBC signals and DTMB signal mixer circuits are output in impedance matching circuit, the impedance matching circuit output
In the first wave filter.
Further, DVBC the and DTMB signal separation units include DVBC Signal Matchings circuit and DTMB Signal Matchings electricity
Road, the first local oscillation circuit, digital video current circuit, low noise amplifier circuit, the second wave filter, Q signal process circuit, simulation are regarded
Frequency demodulator circuit, CVBS video processing circuits, I signal process circuit, intermediate frequency mixting circuit；
The peak detection control unit includes the second local oscillation circuit, intermediate frequency mixting circuit, peak-detector circuit, AD conversion
Circuit；
The CPU includes decoding digital video circuit, central processing unit；
The display unit includes LCD.
One signal output part of first wave filter is output in the input of DVBC Signal Matching circuits, the DVBC
The analog output of Signal Matching circuit is output in an input of low noise amplifier circuit, the low noise amplifier circuit
Output end is output in the input of the second wave filter, and the Q signal output end of second wave filter is output in analog video demodulation
The input of circuit, the output end of the analog video demodulator circuit is output in CVBS video processing circuit inputs, institute
State CVBS video processing circuit output ends and be output in LCD, the digital output end of the DVBC Signal Matchings circuit is output in
The input of decoding digital video circuit, the output end of the decoding digital video circuit is output in LCD, second wave filter
I signal output end be output in the signal input part of intermediate frequency mixting circuit, the output end of the intermediate frequency mixting circuit is output in peak
It is worth the input of detecting circuit, the output end of the peak-detector circuit is output in the input of A/D converter circuit, and the AD turns
The output end for changing circuit is output in the digital signal input end of central processing unit, the digital signal output end of the central processing unit
LCD is output in, the output end of second local oscillation circuit is output in the local oscillator input of intermediate frequency mixting circuit；
Another signal output part of first wave filter is output in the input of DTMB Signal Matching circuits, described
The output end of DTMB Signal Matching circuits is output in another input of low noise amplifier circuit, first local oscillation circuit
One output end is output in DVBC Signal Matching circuits, and another output end of first local oscillation circuit is output in DTMB signals
Match circuit.
Further, the central processing unit uses LPC1769 processors.
Further, DVBC the and DTMB signals mixting circuit that declines high is carried on first circuit board, the IF intermediate-freuqncy signals
Process circuit is carried on second circuit board.
Further, the ground plane of the first circuit board is connected to the ground connection of the second circuit board put relatively through copper post
Layer.
Further, a width of 8M of band of first wave filter.
Advantageous Effects：
1st, this patent is output in the defeated of DVBC Signal Matching circuits using a signal output part of first wave filter
Enter end, the analog output of the DVBC Signal Matchings circuit is output in an input of low noise amplifier circuit, described low
The output end of noise amplifier circuit is output in the input of the second wave filter, the Q signal output end output of second wave filter
In the input of analog video demodulator circuit, the output end of the analog video demodulator circuit is output in CVBS video frequency signal processings
Circuit input end, the CVBS video processing circuits output end is output in LCD, the numeral of the DVBC Signal Matchings circuit
Output end is output in the input of decoding digital video circuit, and the output end of the decoding digital video circuit is output in LCD, institute
The I signal output end for stating the second wave filter is output in the signal input part of intermediate frequency mixting circuit, the intermediate frequency mixting circuit it is defeated
Go out the input that end is output in peak-detector circuit, the output end of the peak-detector circuit is output in the input of A/D converter circuit
End, the output end of the A/D converter circuit is output in the digital signal input end of central processing unit, the number of the central processing unit
Word signal output part is output in LCD, and the output end of second local oscillation circuit is output in the local oscillator input of intermediate frequency mixting circuit,
Another signal output part of first wave filter is output in the input of DTMB Signal Matching circuits, the DTMB signals
Output end with circuit is output in another input of low noise amplifier circuit, an output end of first local oscillation circuit
DVBC Signal Matching circuits are output in, another output end of first local oscillation circuit is output in DTMB Signal Matching circuits,
In the application, the first frequency reducing is exported through frequency mixer through impedance matching circuit wave filter and the first local oscillation signal for DVBC signals to believe
Number low noise amplification and filtering process are carried out, the divided device of signal is then divided into the two paths of signals that phase differs 90 degree, all the way
Export to video decoding circuit carry out numeral and analog video demodulate (VIDEO DECODER) another road enter with the second local oscillation signal
Row mixing, exports the second down-scaled signals.Then by RSSI signal inputs to modulus after carrying out peak detection through peak-detector circuit
Change-over circuit is sampled.The data that sampling is obtained are carried out into Fourier in CPU and calculates FFT, completed with this and be based on
The DVBC signals of peak detection technology are measured with DTMB signal synthesis, while the organic expansion to existing independent signal measuring terminals
Exhibition, it is possible to more effectively lift the operating efficiency of engineering staff's debugging and measurement.
2nd, this patent is carried on first circuit board, the IF intermediate frequencies using DVBC the and DTMB signals mixting circuit that declines high
Signal processing circuit is carried on second circuit board, and the ground plane of the first circuit board is connected to put relatively second through copper post
The ground plane of circuit board, due to a kind of DVBC＆DTMB composite measurement terminals based on peak detection technology, should be based on peak detection
The DVBC＆DTMB composite measurement terminals of technology include：DVBC tunner and DTMB tunner demultiplexing circuits, the DVBC
Include two tellites being connected by copper post, and described two tellites with DTMB demultiplexing circuits
Ground plane is put relatively, and the circuit on one of tellite is the DVBC/DTMB signals mixting circuit that declines high, another
The circuit of tellite is IF signal processing circuit of intermediate frequency, with the DVBC tunner and DTMBtunner Signal separators
The peak detection control unit of circuit connection, and the central processing unit being connected with the peak detection control unit signal, it is defeated
Enter signal to be declined mixed frequency RF plate by impedance matching circuit and height, there is selection to believe DVBC signals and DTMB under the control of ARM
Number walking different tunner circuits respectively carries out different disposal, for prevent it is high decline between mixting circuit and IF intermediate-frequency circuits it is mutually relevant
Disturb, be made in two parts circuit on two pieces of pcb boards respectively by we, every piece of PCB is four laminates, and this two pieces of PCB are straight by 8
The copper post of footpath 6mm is connected to ensure good common ground effect, while this two pieces of stratum of PCB are relative, signal is penetrated by 50 ohm
Frequency line is connected, and signals layer is placed on outside, this ensure that the high-frequency signal of signals layer by after two shieldings on stratum to other one
The interference of individual signals layer is very faint, to improve the antijamming capability of device.
3rd, this patent is using by signal separation unit and peak detection technical finesse so that two kinds of certainties of measurement of signal
1.5dB is above with stability, refresh time 6mS is measured, original numerous and diverse much platforms measuring instrument is integrated, this just makes work
The debugging and measurement of Cheng personnel save plenty of time cost, and cause to need the Multiple Type product of buying originally, now
Only needing to purchase a product just can be with, and great amount of cost is also saved in terms of buying, improves the integrated level of system.
4th, this patent uses a width of 8M of band of first wave filter, for DTMB signals after separation through DTMB tunner
MER and BER signals are separated from IF signals with impedance matching circuit and wave filter is demodulated, we face herein
Problem is the bandwidth selection of impedance matching circuit and filter circuit, and the bandwidth of wave filter is loosened to 8MHz or so by us, to protect
Card MER and BER signals normal through while preventing the introducing of exterior space interference signal (such as mobile phone, radio wave etc.) again.
Then processed in the information feeding ARM that we will demodulate, then shown by ARM processing units.
5th, this patent passes through signal separation unit and peak detection technical finesse so that two kinds of certainties of measurement of signal and steady
Fixed degree is above 1.5dB, measures refresh time 6mS, and original numerous and diverse much platforms measuring instrument is integrated, and this just makes engineering people
The debugging and measurement of member save plenty of time cost, while improve the stability of system.
6th, this patent uses 8 lack samplings, to improve sampling precision, reduces frequency measurement and steps to 50KHz, in addition we
Coherent accumulation treatment is carried out after sampling carries out FFT and uses orthogonal double channels, how general sample rate is more than caused by signal bandwidth
Frequency is strangled, so doppler ambiguity would not be produced by FFT and be caused target aliasing.Raising signal that so can be apparent
The measurement index of SNR, can more really and accurately reaction signal quality and signal level amplitude.In terms of the computing of FFT
The FFT kernels of LPC1769 are we provided very big help, the data conversion that we directly sample AD using FFT kernels
Treatment is carried out into actual waveform to show, improve the precision of system.
7th, for each symbol that DVBC＆DTMB composite measurement terminals are received, (Ij, Qj) is DVBC＆DTMB to this patent
A numerical value for the ideal position of symbol is received in composite measurement terminal planisphere.(δ Ij, δ Qj) is error vector, Wo Mending
Justice is to choose the ideal position of symbol (center of square frame where the symbol defined in planisphere) to the actual symbol position for receiving
The vector distance put.N is the points of a period of time IT symbol, and it is typically more than points in planisphere, that is to say, that connect
The vector being subject to be ideal vector and error vector and.
Divided by the quadratic sum of error vector symbol amplitude, we use this result to the quadratic sum of ideal vector symbol amplitude
One power ratio represented with dB, output display is as modulation error rate MER (Modulation Error Ratio).In measurement
When, DVBC＆DTMB composite measurements terminal is received and sampled to measured digital modulation signals first, is sweared with benchmark after demodulation
Amount signal is compared.Tested difference vector signal between vector signal and base vector signal is believed we term it error vector
Number, range error information is both included in error vector signal, also comprising phase error information.MER is considered signal to noise ratio by us
A kind of form of measurement, it can accurately show the demodulation ability of DVBC＆DTMB composite measurement terminal-pair signals, because it is not only wrapped
Gaussian noise is included, and including receiving all other uncorrectable damage on planisphere.If the effective damage occurred in signal
Wound is only Gaussian noise, then MER is equal to S/N, through experiment we have found that the empirical thresholds value of MER is for 64QAM
23.5dB, is 28.5dB for 256QAM, and less than this value, planisphere will be unable to locking, be improve while reducing systematic error
The demodulation ability of system.
Brief description of the drawings
Fig. 1 is a kind of DVBC signals based on peak detection technology of the utility model and DTMB signal synthesis measuring terminals
Module map；
Specific embodiment
The utility model is described further below in conjunction with accompanying drawing：
In figure：1-DVBC signals and the DTMB signals mixting circuit that declines high, 2-IF signal processing circuit of intermediate frequency, 3-DVBC and
DTMB signal separation units, 4- peak detection control units, 5- CPU, 6- display units, 7-DVBC signals and
DTMB signal mixer circuits, 8- impedance matching circuits, the wave filters of 9- first, 10- rail voltage sample circuits, 11-DVBC signals
Match circuit, 12-DTMB Signal Matching circuits, the local oscillation circuits of 13- first, 14- digital video current circuits, 15- low noise amplifications
Circuit, the wave filters of 16- second, 17-Q signal processing circuits, 18- analog video demodulator circuits, 19-CVBS video frequency signal processings electricity
Road, 20-I signal processing circuits, the local oscillation circuits of 22- second, 23- intermediate frequency mixting circuits, 24- peak-detector circuits, 25-AD conversions
Circuit, 26- decoding digital video circuits, 27- central processing units, 28-LCD.
Embodiment：
Embodiment one：As shown in figure 1, a kind of DVBC signals based on peak detection technology are measured eventually with DTMB signal synthesis
End, including DVBC signals and DTMB signals decline mixting circuit 1 and IF signal processing circuit of intermediate frequency 2 high, at the IF intermediate-freuqncy signals
Reason circuit 2 includes DVBC and DTMB signal separation units 3, peak detection control unit 4, CPU 5, display unit 6；
The DVBC signals and DTMB signal separation units are output in peak detection control unit 4, the peak detection control
Unit processed 4 is output in CPU 5, and the CPU 5 is output in display unit 6.
The DVBC signals and the DTMB signals mixting circuit 1 that declines high include DVBC signals and DTMB signal mixer circuits 7, resistance
The wave filter 9 of anti-match circuit 8 and first, rail voltage sample circuit 10；
The DVBC signals and DTMB signal mixer circuits 7 are output in impedance matching circuit 8, the impedance matching circuit 8
It is output in the first wave filter 9.
DVBC the and DTMB signal separation units 3 include DVBC Signal Matchings circuit 11 and DTMB Signal Matching circuits
12nd, the first local oscillation circuit 13, digital video current circuit 14, low noise amplifier circuit 15, the second wave filter 16, Q signal treatment electricity
Road 17, analog video demodulator circuit 18, CVBS video processing circuits 19, I signal process circuit 20, intermediate frequency mixting circuit
23；
The peak detection control unit 4 includes the second local oscillation circuit 22, intermediate frequency mixting circuit 23, peak-detector circuit
24th, A/D converter circuit 25；
The CPU 5 includes decoding digital video circuit 26, central processing unit 27；
The display unit 6 includes LCD28.
One signal output part of first wave filter 9 is output in the input of DVBC Signal Matchings circuit 11, described
The analog output of DVBC Signal Matchings circuit 11 is output in an input of low noise amplifier circuit 15, and the low noise is put
The output end of big circuit 15 is output in the input of the second wave filter 16, the Q signal output end output of second wave filter 16
In the input of analog video demodulator circuit 18, the output end of the analog video demodulator circuit 18 is output in CVBS vision signals
The input of process circuit 19, the output end of CVBS video processing circuits 19 is output in LCD28, the DVBC Signal Matchings
The digital output end of circuit 11 is output in the input of decoding digital video circuit 26, the decoding digital video circuit 26 it is defeated
Go out end and be output in LCD28, the I signal output end of second wave filter 16 is output in the signal input of intermediate frequency mixting circuit 23
End, the output end of the intermediate frequency mixting circuit 23 is output in the input of peak-detector circuit 24, the peak-detector circuit 24
Output end be output in the input of A/D converter circuit 25, the output end of the A/D converter circuit 25 is output in central processing unit 27
Digital signal input end, the digital signal output end of the central processing unit 27 is output in LCD28, second local oscillation circuit
22 output end is output in the local oscillator input of intermediate frequency mixting circuit 23；
Another signal output part of first wave filter 9 is output in the input of DTMB Signal Matchings circuit 12, institute
The output end for stating DTMB Signal Matchings circuit 12 is output in another input of low noise amplifier circuit 15, first local oscillator
One output end of circuit 13 is output in DVBC Signal Matchings circuit 11, and another output end of first local oscillation circuit 13 is defeated
For DTMB Signal Matchings circuit 12.
The central processing unit 27 uses LPC1769 processors.
DVBC the and DTMB signals mixting circuit that declines high is carried on first circuit board, the IF signal processing circuit of intermediate frequency
2 are carried on second circuit board.
The ground plane of the first circuit board is connected to the ground plane of the second circuit board put relatively through copper post.
The a width of 8M of band of first wave filter 9.
Operation principle：
This patent is output in the input of DVBC Signal Matching circuits by a signal output part of first wave filter
End, the analog output of the DVBC Signal Matchings circuit is output in an input of low noise amplifier circuit, the low noise
The output end of sound amplifying circuit is output in the input of the second wave filter, and the Q signal output end of second wave filter is output in
The input of analog video demodulator circuit, the output end of the analog video demodulator circuit is output in CVBS video frequency signal processings electricity
Road input, the CVBS video processing circuits output end is output in LCD, the DVBC Signal Matchings circuit it is digital defeated
Go out the input that end is output in decoding digital video circuit, the output end of the decoding digital video circuit is output in LCD, described
The I signal output end of the second wave filter is output in the signal input part of intermediate frequency mixting circuit, the output of the intermediate frequency mixting circuit
End is output in the input of peak-detector circuit, and the output end of the peak-detector circuit is output in the input of A/D converter circuit
End, the output end of the A/D converter circuit is output in the digital signal input end of central processing unit, the number of the central processing unit
Word signal output part is output in LCD, and the output end of second local oscillation circuit is output in the local oscillator input of intermediate frequency mixting circuit,
Another signal output part of first wave filter is output in the input of DTMB Signal Matching circuits, the DTMB signals
Output end with circuit is output in another input of low noise amplifier circuit, an output end of first local oscillation circuit
DVBC Signal Matching circuits are output in, another output end of first local oscillation circuit is output in DTMB Signal Matching circuits,
In the application, the first frequency reducing is exported through frequency mixer through impedance matching circuit wave filter and the first local oscillation signal for DVBC signals to believe
Number low noise amplification and filtering process are carried out, the divided device of signal is then divided into the two paths of signals that phase differs 90 degree, all the way
Export to video decoding circuit carry out numeral and analog video demodulate (VIDEO DECODER) another road enter with the second local oscillation signal
Row mixing, exports the second down-scaled signals.Then by RSSI signal inputs to modulus after carrying out peak detection through peak-detector circuit
Change-over circuit is sampled.The data that sampling is obtained are carried out into Fourier in CPU and calculates FFT, completed with this and be based on
The DVBC signals of peak detection technology are measured with DTMB signal synthesis, and the utility model solves prior art and there is integrated level
Low, extended capability is poor and the ineffective problem of engineering staff's debugging and measurement, with effectively lifting engineering staff
Debugging and measurement operating efficiency, improve system integrated level, improve system stability, improve system precision,
The Advantageous Effects of the demodulation ability of system are improve while reducing systematic error.
Using the technical solution of the utility model, or those skilled in the art is in the inspiration of technical solutions of the utility model
Under, similar technical scheme is designed, and above-mentioned technique effect is reached, it is to fall into protection domain of the present utility model.
Claims (7)
1. a kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals, it is characterised in that including
DVBC signals and DTMB signals decline mixting circuit and IF signal processing circuit of intermediate frequency high, the IF signal processing circuit of intermediate frequency include
DVBC and DTMB signal separation units, peak detection control unit, CPU, display unit；
The DVBC signals and DTMB signal separation units are output in peak detection control unit, the peak detection control unit
CPU is output in, the CPU is output in display unit.
2. a kind of DVBC signals based on peak detection technology according to claim 1 are measured eventually with DTMB signal synthesis
End, it is characterised in that the DVBC signals and the DTMB signals mixting circuit that declines high include DVBC signals and DTMB signals mixing electricity
Road, impedance matching circuit and the first wave filter, rail voltage sample circuit；
The DVBC signals and DTMB signal mixer circuits are output in impedance matching circuit, and the impedance matching circuit is output in
One wave filter.
3. a kind of DVBC signals based on peak detection technology according to claim 2 are measured eventually with DTMB signal synthesis
End, it is characterised in that DVBC the and DTMB signal separation units include DVBC Signal Matchings circuit and DTMB Signal Matchings electricity
Road, the first local oscillation circuit, digital video current circuit, low noise amplifier circuit, the second wave filter, Q signal process circuit, simulation are regarded
Frequency demodulator circuit, CVBS video processing circuits, I signal process circuit, intermediate frequency mixting circuit；
The peak detection control unit includes the second local oscillation circuit, intermediate frequency mixting circuit, peak-detector circuit, AD conversion electricity
Road；
The CPU includes decoding digital video circuit, central processing unit；
The display unit includes LCD；
One signal output part of first wave filter is output in the input of DVBC Signal Matching circuits, the DVBC signals
The analog output of match circuit is output in an input of low noise amplifier circuit, the output of the low noise amplifier circuit
End is output in the input of the second wave filter, and the Q signal output end of second wave filter is output in analog video demodulator circuit
Input, the output end of the analog video demodulator circuit is output in CVBS video processing circuit inputs, described
CVBS video processing circuit output ends are output in LCD, and the digital output end of the DVBC Signal Matchings circuit is output in number
The input of word video decoding circuit, the output end of the decoding digital video circuit is output in LCD, second wave filter
I signal output end is output in the signal input part of intermediate frequency mixting circuit, and the output end of the intermediate frequency mixting circuit is output in peak value
The input of detecting circuit, the output end of the peak-detector circuit is output in the input of A/D converter circuit, the AD conversion
The output end of circuit is output in the digital signal input end of central processing unit, and the digital signal output end of the central processing unit is defeated
For LCD, the output end of second local oscillation circuit is output in the local oscillator input of intermediate frequency mixting circuit；
Another signal output part of first wave filter is output in the input of DTMB Signal Matching circuits, the DTMB letters
The output end of number match circuit is output in another input of low noise amplifier circuit, and of first local oscillation circuit is defeated
Go out end and be output in DVBC Signal Matching circuits, another output end of first local oscillation circuit is output in DTMB Signal Matchings electricity
Road.
4. a kind of DVBC signals based on peak detection technology according to claim 3 are measured eventually with DTMB signal synthesis
End, it is characterised in that the central processing unit uses LPC1769 processors.
5. a kind of DVBC signals based on peak detection technology according to claim 1 are measured eventually with DTMB signal synthesis
End, it is characterised in that DVBC the and DTMB signals mixting circuit that declines high is carried on first circuit board, at the IF intermediate-freuqncy signals
Reason circuit is carried on second circuit board.
6. a kind of DVBC signals based on peak detection technology according to claim 5 are measured eventually with DTMB signal synthesis
End, it is characterised in that the ground plane of the first circuit board is connected to the ground plane of the second circuit board put relatively through copper post.
7. a kind of DVBC signals based on peak detection technology according to claim 3 are measured eventually with DTMB signal synthesis
End, it is characterised in that a width of 8M of band of first wave filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179468.2U CN206226630U (en) | 2016-11-03 | 2016-11-03 | A kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179468.2U CN206226630U (en) | 2016-11-03 | 2016-11-03 | A kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals |
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| Publication Number | Publication Date |
|---|---|
| CN206226630U true CN206226630U (en) | 2017-06-06 |
Family
ID=58789545
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621179468.2U Expired - Fee Related CN206226630U (en) | 2016-11-03 | 2016-11-03 | A kind of DVBC signals based on peak detection technology and DTMB signal synthesis measuring terminals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490241A (en) * | 2018-05-22 | 2018-09-04 | 梧州学院 | A kind of small signal high precision peak detection device of high bandwidth |
-
2016
- 2016-11-03 CN CN201621179468.2U patent/CN206226630U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490241A (en) * | 2018-05-22 | 2018-09-04 | 梧州学院 | A kind of small signal high precision peak detection device of high bandwidth |
| CN108490241B (en) * | 2018-05-22 | 2024-02-27 | 梧州学院 | High-bandwidth small-signal high-precision peak detection device |
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