CN107911081A - A kind of frequency agility, low-power consumption frequency source - Google Patents
A kind of frequency agility, low-power consumption frequency source Download PDFInfo
- Publication number
- CN107911081A CN107911081A CN201711353027.9A CN201711353027A CN107911081A CN 107911081 A CN107911081 A CN 107911081A CN 201711353027 A CN201711353027 A CN 201711353027A CN 107911081 A CN107911081 A CN 107911081A
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- BTYUGHWCEFRRRF-UHFFFAOYSA-N [As].[K] Chemical compound [As].[K] BTYUGHWCEFRRRF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000010355 oscillation Effects 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000003786 synthesis reaction Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/14—Balanced arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
Abstract
The invention discloses a kind of frequency agility, low-power consumption frequency source, frequency source produces multiple signals by frequency multiplier circuit, wherein all the way for DDS as DDS reference signals, other multichannels provide local oscillation signal needed for mixing, DDS circuit exports small stepping intermediate-freuqncy signal after reference signal is received, switched filter circuit is after local oscillation signal is received, respective frequencies are selected by switching, to realize the frequency agility saltus step of frequency, switched filter circuit is switched using arsenic potassium and the combination of power supply controllable amplifier, selected in variable connector filter circuit wherein all the way, other road amplifier shut-offs, the same time, only amplifier was powered all the way, reduce power consumption, in addition the less arsenic potassium switch of electric current is selected, further reduce power consumption.
Description
Technical field
The present invention relates to the communications field, particularly a kind of frequency agility, low-power consumption frequency source.
Background technology
Different fields of employment it is wireless, the interference source frequency run into is different, and the different periods in same place go out sometimes
Existing interfering frequency also differs, and in order to be effectively shielded from these interfering frequencies, wirelessly should have quick change to select channel
Ability, i.e. frequency agile techniques.Frequency agile techniques can quickly change wireless frequency, militarily using more, substantially
The military equipment of wireless class can all be related to frequency agile techniques, as radar is anti-tampering, the anti-tampering tracking of guided missile.
The frequency agility mode generally used at present is mainly direct analog frequency synthesizer, i.e., using one or more different
Crystal oscillator as reference signal source, directly produced using frequency multiplier, frequency divider, frequency mixer and microwave switch many discrete
The output signal of frequency, the signal that this method obtains has the characteristics that frequency stability is high, frequency transformation speed is fast, but its side
Case is complicated, and power consumption is higher, in many communication systems often due to the limitation of power consumption and cannot use.
The content of the invention
For technical problem present in background technology, the present invention proposes a kind of frequency agility, low-power consumption frequency source, its feature
It is, the frequency agility, low-power consumption frequency source mainly include frequency multiplier circuit, DDS circuit and switched filter circuit, wherein described times
Frequency circuit is used to produce multiple signals, wherein being provided all the way for the DDS circuit as signal, other multichannels are referred to needed for mixing
Local oscillation signal, the DDS circuit are used to export small stairstep signal, and the switched filter circuit is used for by the switch selection of arsenic potassium
Respective frequencies, to realize the frequency agility saltus step of frequency.
Further, the frequency multiplier circuit includes crystal oscillator, harmonic oscillator, attenuator, high-pass and low-pass filter and power point
Orchestration, the output terminal of the crystal oscillator are connected with the input terminal of the harmonic oscillator, the output terminal of the harmonic oscillator and institute
The input terminal connection of attenuator is stated, the output terminal of the attenuator is connected with the input terminal of the high-pass and low-pass filter, the height
The output terminal of low-pass filter is connected with the input terminal of the power divider.
Further, the crystal oscillator surpasses Low phase noise constant-temperature crystal oscillator for 100MHz.
Further, the power divider is exported comprising two-way, wherein reference of the 2400MHz signals as DDS circuit
Signal, 2100MHz signals, 2300MHz signals, 2500MHz signals and 2700MHz signals are input to the switched filter circuit
Input terminal.
Further, the DDS circuit includes reference filtering unit, amplifier 1, Direct Digital Synthesis device, output
Filter unit and amplifier 2, the output terminal of the reference filtering unit connect the input terminal of the amplifier 1, the amplifier 1
Output terminal connect the Direct Digital Synthesis device, the output signal connection of the Direct Digital Synthesis device is described defeated
Go out the input terminal of filter unit, the output terminal of the output filter unit connects the input terminal of the amplifier 2.
Further, the reference filtering unit and output filter unit use bandpass filter.
Further, the small stairstep signal is the signal of 300 ~ 500MHz.
Further, the switched filter circuit includes multistage arsenic potassium switch, multi-stage power source controllable amplifier, multistage band
Bandpass filter and frequency mixer.
Further, the arsenic potassium, which switchs to be opened according to different output frequency requirement selections, corresponds to switching, being electric for road
Source controllable amplifier and bandpass filter, switch, power supply controllable amplifier and the bandpass filter on other roads are closed.
Further, the frequency mixer is based on the local oscillation signal and the small stairstep signal carries out mixing operation.
Brief description of the drawings
Fig. 1 is frequency agility, low-power consumption frequency source structure diagram；
Fig. 2 is frequency multiplier circuit structure diagram；
Fig. 3 is DDS circuit structure diagram；
Fig. 4 is switched filter circuit structure diagram.
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now control illustrates this hair
Bright embodiment.
Frequency agility, low-power consumption frequency source mainly include frequency multiplier circuit, DDS circuit and switched filter circuit.
As shown in Fig. 2, frequency multiplier circuit includes crystal oscillator, harmonic oscillator, attenuator, high-pass and low-pass filter and power distribution
Device.Crystal oscillator surpasses Low phase noise constant-temperature crystal oscillator for 100MHz, and the output terminal of crystal oscillator and the input terminal of harmonic oscillator connect, and harmonic wave occurs
The output terminal of device and the input terminal of attenuator connect, and the output terminal of attenuator is connected with the input terminal of high-pass and low-pass filter, height
The output terminal of bandpass filter is connected with the input terminal of power divider, and power divider is exported comprising two-way, wherein 2400MHz letters
Reference signal number as DDS circuit, 2100MHz signals, 2300MHz signals, 2500MHz signals and the input of 2700MHz signals
To the input terminal of switched filter circuit.It is a kind of frequency source of high stable that 100MHz, which surpasses Low phase noise constant-temperature crystal oscillator, but working range
It is relatively narrow, coordinated by harmonic oscillator and attenuator, expand the working range of frequency.
As shown in figure 3, DDS circuit includes reference filtering unit, amplifier 1, Direct Digital Synthesis device, output filtering
Unit and amplifier 2, wherein, reference filtering unit is bandpass filter 1, and output filter unit is bandpass filter 2.Frequency multiplication electricity
The 2400MHz signals exported in the power divider of road are input to the input terminal of bandpass filter 1, the output terminal of bandpass filter 1
Connect the input terminal of amplifier 1, the output terminal connection Direct Digital Synthesis device of amplifier 1, Direct Digital Synthesis device
Output signal obtain the small stairstep signal of 300 ~ 500MHz by bandpass filter 2 and amplifier 2.
As shown in figure 4, switched filter circuit includes multistage arsenic potassium switch, multi-stage power source controllable amplifier, multi-stage bandpass
Wave filter and frequency mixer.2100MHz signals, 2300MHz signals, the 2500MHz signals exported in frequency multiplier circuit power divider
Arsenic potassium is signally attached to 2700MHz and switchs 1, is opened according to different output frequency requirement selections and is corresponded to switching, being electric for road
Source controllable amplifier and bandpass filter, switch, power supply controllable amplifier and the bandpass filter on other roads are closed, by amplification
Be mixed with the signal of filtering and 300 ~ 500MHz of output signal of DDS circuit into frequency mixer, output 2000 ~
Multigroup frequency signal in the range of 3000MHz is connected to arsenic potassium switch 3, and selection opening pair is required according to different output frequencies
Switch, power supply controllable amplifier and the bandpass filter of Ying Lu, switch, power supply controllable amplifier and the bandpass filter on other roads
Close, exported after amplifying eventually through amplifier 12.
Conventional PN switched filter circuits need larger electric current, and as switch filtering way increase electric current total amount is tired out
Add, cause such a frequency agility frequency source power consumption higher.The present invention is using the very low arsenic potassium switch of power consumption, although arsenic potassium power consumption
It is relatively low, but isolation is worse compared with PN switches, and in order to make up this shortcoming, power supply controllable amplifier is added in the present invention,
Need not when can power cutoff, so turn off switch while, be also switched off APS amplifier power supply, when unlike signal exports,
All the time only APS amplifier power supply is opened all the way.This mode not only adds isolation, also improves to-noise ratio, it is most important that
Greatly reduce overall power.
Entirely the course of work of frequency source is：
When there is reference signal input, amplifier amplifies input power, for promoting snap-off diode, produces multiple harmonic wave letters
Number, port is matched by attenuator, then by filtering out multiple harmonic signals of needs after high low-pass filtering, then power divides
With multichannel, wherein all the way, as the reference signal of DDS circuit, other signals are then input to switch filtering electricity as local oscillation signal
Road.
Reference after the filtered unit amplification of reference signal that frequency multiplier circuit produces as Direct Digital Synthesis device
Signal, the output signal of Direct Digital Synthesis device obtain small stairstep signal after amplifying again by exporting filter unit.
When multiple signals that frequency multiplier circuit produces are by switch filter circuit, the arsenic potassium switch closure of corresponding frequencies,
APS amplifier power supply is opened, this frequency band filter gating, while remaining way switch is closed, and APS amplifier power supply is closed.By amplification and
The small stairstep signal of signal and the DDS circuit output of filtering is mixed into frequency mixer, is exported in the range of 2000 ~ 3000MHz
Multigroup frequency signal, require selection to open switch, power supply controllable amplifier and the band on corresponding road according to different output frequency
Bandpass filter, switch, power supply controllable amplifier and the bandpass filter on other roads are closed, defeated after amplifying eventually through amplifier 12
Go out.
Frequency agility, low-power consumption frequency source produce multiple signals by frequency multiplier circuit, wherein all the way for DDS circuit as reference
Signal, other multichannels provide local oscillation signal needed for mixing, and DDS circuit exports small stairstep signal after reference signal is received, opens
Filter circuit is closed after local oscillation signal is received, respective frequencies are selected by switching, to realize the frequency agility saltus step of frequency, switch
Filter circuit selects wherein one using the combination of arsenic potassium switch and power supply controllable amplifier in variable connector filter circuit
Road, other road amplifier shut-offs, the same time, only amplifier was powered all the way, reduced power consumption, in addition selected electric current less
Arsenic potassium switchs, and further reduces power consumption.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
Enclose, therefore equivalent variations made according to the claims of the present invention, it is still within the scope of the present invention.
Claims (10)
1. a kind of frequency agility, low-power consumption frequency source, it is characterised in that the frequency agility, low-power consumption frequency source mainly include frequency multiplication
Circuit, DDS circuit and switched filter circuit, wherein the frequency multiplier circuit is used to produce multiple signals, wherein supplying the DDS all the way
Circuit provides local oscillation signal needed for mixing as signal, other multichannels are referred to, and the DDS circuit is used to export small stairstep signal,
The switched filter circuit is used for by arsenic potassium switch selection respective frequencies, to realize the frequency agility saltus step of frequency.
2. frequency agility according to claim 1, low-power consumption frequency source, it is characterised in that the frequency multiplier circuit include crystal oscillator,
Harmonic oscillator, attenuator, high-pass and low-pass filter and power divider, the output terminal of the crystal oscillator and the harmonic oscillator
Input terminal connects, and the output terminal of the harmonic oscillator is connected with the input terminal of the attenuator, the output terminal of the attenuator
It is connected with the input terminal of the high-pass and low-pass filter, the input of the output terminal of the high-pass and low-pass filter and the power divider
End is connected.
3. frequency agility according to claim 2, low-power consumption frequency source, it is characterised in that the crystal oscillator is ultralow for 100MHz
Mutually make an uproar constant-temperature crystal oscillator.
4. frequency agility according to claim 2, low-power consumption frequency source, it is characterised in that the power divider includes two
Road exports, wherein reference signal of the 2400MHz signals as DDS circuit, 2100MHz signals, 2300MHz signals, 2500MHz letters
Number and 2700MHz signals be input to the input terminal of the switched filter circuit.
5. frequency agility according to claim 1, low-power consumption frequency source, it is characterised in that the DDS circuit is included with reference to filter
Ripple unit, amplifier 1, Direct Digital Synthesis device export filter unit and amplifier 2, the reference filtering unit it is defeated
Outlet connects the input terminal of the amplifier 1, and the output terminal of the amplifier 1 connects the Direct Digital Synthesis device, institute
The input terminal of the output signal connection output filter unit of Direct Digital Synthesis device is stated, the output filter unit
Output terminal connects the input terminal of the amplifier 2.
6. frequency agility according to claim 5, low-power consumption frequency source, it is characterised in that the reference filtering unit and defeated
Go out filter unit and use bandpass filter.
7. frequency agility according to claim 5, low-power consumption frequency source, it is characterised in that the small stairstep signal for 300 ~
The signal of 500MHz.
8. frequency agility according to claim 1, low-power consumption frequency source, it is characterised in that the switched filter circuit includes
Multistage arsenic potassium switch, multi-stage power source controllable amplifier, multilevel band-pass filter and frequency mixer.
9. frequency agility according to claim 8, low-power consumption frequency source, it is characterised in that the arsenic potassium switch is not according to
Switch, power supply controllable amplifier and the bandpass filter on the same corresponding road of output frequency requirement selection opening, the switch on other roads,
Power supply controllable amplifier and bandpass filter are closed.
10. frequency agility according to claim 8, low-power consumption frequency source, it is characterised in that the frequency mixer is based on described
Shake signal and the small stairstep signal progress mixing operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353027.9A CN107911081A (en) | 2017-12-15 | 2017-12-15 | A kind of frequency agility, low-power consumption frequency source |
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| CN201711353027.9A CN107911081A (en) | 2017-12-15 | 2017-12-15 | A kind of frequency agility, low-power consumption frequency source |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031405A (en) * | 2018-06-19 | 2018-12-18 | 吉林大学 | Source driving device and seismic wave generating device |
| CN110208747A (en) * | 2019-06-11 | 2019-09-06 | 上海航天电子通讯设备研究所 | A kind of X-Ku band radar agile frequency source device |
| CN111988036A (en) * | 2020-07-07 | 2020-11-24 | 杭州芯影科技有限公司 | Method for generating signal source suitable for millimeter wave security inspection |
| CN113359085A (en) * | 2021-06-01 | 2021-09-07 | 四川中电昆辰科技有限公司 | High-isolation time division multiplexing multichannel receiver and receiving method |
| CN113381779A (en) * | 2021-06-15 | 2021-09-10 | 中国科学院上海微系统与信息技术研究所 | Ultra-wideband receiver |
| CN114268278A (en) * | 2020-09-16 | 2022-04-01 | 南京赛格微电子科技股份有限公司 | Multi-path frequency doubling module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031405A (en) * | 2018-06-19 | 2018-12-18 | 吉林大学 | Source driving device and seismic wave generating device |
| CN109031405B (en) * | 2018-06-19 | 2024-04-12 | 吉林大学 | Seismic source driving device and seismic wave generating equipment |
| CN110208747A (en) * | 2019-06-11 | 2019-09-06 | 上海航天电子通讯设备研究所 | A kind of X-Ku band radar agile frequency source device |
| CN111988036A (en) * | 2020-07-07 | 2020-11-24 | 杭州芯影科技有限公司 | Method for generating signal source suitable for millimeter wave security inspection |
| CN114268278A (en) * | 2020-09-16 | 2022-04-01 | 南京赛格微电子科技股份有限公司 | Multi-path frequency doubling module |
| CN113359085A (en) * | 2021-06-01 | 2021-09-07 | 四川中电昆辰科技有限公司 | High-isolation time division multiplexing multichannel receiver and receiving method |
| CN113381779A (en) * | 2021-06-15 | 2021-09-10 | 中国科学院上海微系统与信息技术研究所 | Ultra-wideband receiver |
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