CN208386517U - 10-500MHz broadband frequency source - Google Patents
10-500MHz broadband frequency source Download PDFInfo
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- CN208386517U CN208386517U CN201821452419.0U CN201821452419U CN208386517U CN 208386517 U CN208386517 U CN 208386517U CN 201821452419 U CN201821452419 U CN 201821452419U CN 208386517 U CN208386517 U CN 208386517U
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- ndiv
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- voltage controlled
- filter
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- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
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Abstract
The utility model discloses a kind of 10-500MHz broadband frequency sources, including reference crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator, power splitter, RDIV, NDIV, amplifier, digital pad, power amplifier, filter, modulator and single-chip microcontroller, with reference to reference signal of the crystal oscillator after RDIV is divided, the feedback signal through dividing through NDIV by phase discriminator carries out phase demodulation again with power splitter is entered after voltage controlled oscillator, then it exports to loop filter and filters, again through voltage controlled oscillator outputting stable frequency signal, successively separated through power splitter, amplifier amplification, digital pad decaying, power amplifier amplification, it is exported after filter filtering, single-chip microcontroller controls the frequency dividing ratio of NDIV and the attenuation of digital pad processed.The utility model realizes ultra wide band, changeable frequency using phase-locked loop circuit, keeps output power adjustable using digital pad, using modulator control power amplifier, while having pulse modulated function, realize high-power output.
Description
Technical field
The utility model belongs to radio frequency arts, and in particular to a kind of 10-500MHz broadband frequency source.
Background technique
Frequency source is the important component of electronic system, is the key equipment for determining contemporary electronic systems performance.With
The fast development of radio communication technology, the electronic systems such as radar, electronic countermeasure, electronic measuring instrument, mobile communication are to frequency
The performance and function in source propose increasingly higher demands.Broadband, big output power, output power frequency is adjustable, the not people having the same aspiration and interest
The frequency source of system has become the hot spot of Recent study.The present invention has the function such as output ultra wide band, high-power 1W, impulse modulation
Can, meet the demand of existing market.
Utility model content
The utility model technical issues that need to address are to provide a kind of ultra wide band, high-power, and output frequency and function
The adjustable 10-500MHz broadband frequency source of rate.
To solve the above problems, technical solution adopted in the utility model is:
A kind of 10-500MHz broadband frequency source, including phase discriminator, loop filter, voltage controlled oscillator, power splitter, RDIV,
NDIV, amplifier, digital pad, power amplifier, filter and single-chip microcontroller, wherein phase discriminator, loop filter, voltage-controlled
Oscillator, power splitter, RDIV, NDIV constitute phase-locked loop circuit, and phase discriminator input terminal is separately connected RDIV and NDIV output end, reflect
Phase device output end linkloop filter input end, loop filter output end connect voltage controlled oscillator input terminal, voltage controlled oscillation
Device output end connects power splitter input terminal, and power splitter output end connects NDIV input terminal all the way, connects amplifier in all the way,
Amplifier out connects digital pad input terminal, and digital pad output end connects power amplifier input, and power is put
Big device output end connects filter input end, and filter output exports echo signal, and the connection of RDIV input terminal refers to crystal oscillator, single
The output end of piece machine is separately connected NDIV control terminal and digital pad control terminal；With reference to reference letter of the crystal oscillator after RDIV is divided
Number with after voltage controlled oscillator enter power splitter again through NDIV divide feedback signal phase demodulation is carried out by phase discriminator, then export to
Loop filter filtering, then through voltage controlled oscillator outputting stable frequency signal, successively through power splitter distribution, amplifier amplification, number
It is exported after the decaying of word attenuator, power amplifier amplification, filter filtering, single-chip microcontroller output frequency division is than signal to NDIV, control
The frequency dividing ratio of NDIV, single-chip microcontroller output attenuatoin control the attenuation of signal to digital pad control digital pad.
It is further: to further include modulator, the input terminal of the output connection power amplifier of modulator.
Preferably, the voltage controlled oscillator is 10-500MHz voltage controlled oscillator.
Preferably, the power amplifier is gain 30dB, and peak power output is 33dBm power tube.
The beneficial effects of adopting the technical scheme are that
The utility model realizes ultra wide band, changeable frequency using phase-locked loop circuit, makes output power using digital pad
It is adjustable, using modulator control power amplifier, while there is pulse modulated function, realizes high-power output.
Detailed description of the invention
Fig. 1 is the utility model principle figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, the utility model include with reference to crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator, power splitter,
RDIV(R frequency divider), NDIV(N frequency divider), amplifier, digital pad, power amplifier, filter, modulator and list
Piece machine, wherein phase discriminator, loop filter, voltage controlled oscillator, power splitter, RDIV, NDIV constitute phase-locked loop circuit, and phase discriminator is defeated
Enter end and is separately connected RDIV and NDIV output end, phase detector output linkloop filter input end, loop filter output
End connection voltage controlled oscillator input terminal, voltage controlled oscillator output end connect power splitter input terminal, and power splitter output end connects all the way
NDIV input terminal connects amplifier in all the way, and amplifier out connects digital pad input terminal, and digital pad is defeated
Outlet connects power amplifier input, and power amplifier output connects filter input end, and filter output exports mesh
Signal is marked, the connection of RDIV input terminal refers to crystal oscillator, and the output end of single-chip microcontroller is separately connected NDIV control terminal and digital pad control
End processed, the input terminal of the output connection power amplifier of modulator；With reference to reference signal of the crystal oscillator after RDIV is divided with through pressing
Enter the feedback signal that power splitter is divided through NDIV again after control oscillator and phase demodulation is carried out by phase discriminator, then exports to loop filtering
Device filtering, then through voltage controlled oscillator outputting stable frequency signal, successively through power splitter distribution, amplifier amplification, digital pad
It is exported after decaying, power amplifier amplification, filter filtering, single-chip microcontroller output frequency division controls point of NDIV than signal to NDIV
Frequency ratio, single-chip microcontroller output attenuatoin control the attenuation of signal to digital pad control digital pad.Modulator carries out pulse
Modulate the modulation, it can be achieved that distinct pulse widths different cycles.
In order to realize that 10-500MHz radiofrequency signal exports, the voltage controlled oscillator is 10-500MHz voltage controlled oscillator.
In order to guarantee that output power, the power amplifier are gain 30dB, peak power output is 33dBm power tube.
Working principle:
The utility model uses 10MHz crystal oscillator to provide reference signal for phaselocked loop, reference signal after R is divided with feedback letter
Phase demodulation number is carried out after Fractional-N frequency, eliminates phase difference value, and final loop-locking makes voltage controlled oscillator stablize accurate output, single-chip microcontroller
By changing different frequency dividing ratios, the frequency dividing ratio of NDIV is controlled, to realize the output of 10MHz to 500MHz different frequency.
Output signal is amplified through amplifier, is then decayed through digital pad to signal, after through power amplifier
Final output after amplification, filter filtering.Digital pad controls the attenuation, it can be achieved that different by single-chip microcontroller, makes output work
Rate is adjustable.Power amplifier selects gain 30dB, and peak power output is 33dBm power tube, guarantees that output power is not less than 1W.
Claims (4)
1.10-500MHz broadband frequency source, it is characterised in that: including phase discriminator, loop filter, voltage controlled oscillator, power splitter,
RDIV, NDIV, amplifier, digital pad, power amplifier, filter and single-chip microcontroller, wherein phase discriminator, loop filtering
Device, voltage controlled oscillator, power splitter, RDIV, NDIV constitute phase-locked loop circuit, and phase discriminator input terminal is separately connected RDIV and NDIV is defeated
Outlet, phase detector output linkloop filter input end, loop filter output end connect voltage controlled oscillator input terminal, pressure
It controls oscillator output end and connects power splitter input terminal, power splitter output end connects NDIV input terminal all the way, connects amplifier all the way
Input terminal, amplifier out connect digital pad input terminal, and digital pad output end connects power amplifier input,
Power amplifier output connects filter input end, and filter output exports echo signal, the connection reference of RDIV input terminal
Crystal oscillator, the output end of single-chip microcontroller are separately connected NDIV control terminal and digital pad control terminal；With reference to crystal oscillator after RDIV is divided
Reference signal with after voltage controlled oscillator enter power splitter again through NDIV divide feedback signal phase demodulation is carried out by phase discriminator, so
After export to loop filter and filter, then through voltage controlled oscillator outputting stable frequency signal, successively through power splitter distribution, amplifier
It is exported after amplification, digital pad decaying, power amplifier amplification, filter filtering, single-chip microcontroller output frequency division is extremely than signal
NDIV, controls the frequency dividing ratio of NDIV, and single-chip microcontroller output attenuatoin controls the decaying of signal to digital pad control digital pad
Amount.
2. 10-500MHz broadband frequency source according to claim 1, it is characterised in that: it further include modulator, modulator
The input terminal of output connection power amplifier.
3. 10-500MHz broadband frequency source according to claim 1 or 2, it is characterised in that: the voltage controlled oscillator is
10-500MHz voltage controlled oscillator.
4. 10-500MHz broadband frequency source according to claim 3, it is characterised in that: the power amplifier is gain
30dB, peak power output are 33dBm power tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821452419.0U CN208386517U (en) | 2018-09-06 | 2018-09-06 | 10-500MHz broadband frequency source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821452419.0U CN208386517U (en) | 2018-09-06 | 2018-09-06 | 10-500MHz broadband frequency source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208386517U true CN208386517U (en) | 2019-01-15 |
Family
ID=64961940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821452419.0U Expired - Fee Related CN208386517U (en) | 2018-09-06 | 2018-09-06 | 10-500MHz broadband frequency source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208386517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114448525A (en) * | 2021-12-28 | 2022-05-06 | 成都天贸科技有限公司 | S-band spread spectrum signal simulation source |
-
2018
- 2018-09-06 CN CN201821452419.0U patent/CN208386517U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114448525A (en) * | 2021-12-28 | 2022-05-06 | 成都天贸科技有限公司 | S-band spread spectrum signal simulation source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20210906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |