CN207184457U - Phase continuation frequency source - Google Patents
Phase continuation frequency source Download PDFInfo
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- CN207184457U CN207184457U CN201721073052.7U CN201721073052U CN207184457U CN 207184457 U CN207184457 U CN 207184457U CN 201721073052 U CN201721073052 U CN 201721073052U CN 207184457 U CN207184457 U CN 207184457U
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Abstract
The utility model provides a kind of Phase Continuation frequency source, including amplification module, filtration module, handover module, control module, produce the reference frequency module of reference frequency signal, the first lock phase module of the first frequency band signals is generated according to the reference frequency signal, the second lock phase module of the second frequency band signals is generated according to the reference frequency signal and first frequency band signals, the 3rd lock phase module of the 3rd frequency band signals is generated according to the reference frequency signal, and according to the 4th lock phase module that the reference frequency signal is generated to the 4th frequency band signals.Phase Continuation frequency source provided by the utility model, four road frequency band signals are respectively synthesized by four lock phase modules, output is switched over to four road frequency band signals by handover module, realize wide band phase continuity frequency signal output, the implementation process of phase continuity frequency source can be simplified, the structure of frequency source is simplified, reduces cost.
Description
Technical field
The utility model belongs to frequency microwave component technology field, is to be related to a kind of Phase Continuation frequency more specifically
Source.
Background technology
At present, be connected the frequency source generally use DDS that continuity requires higher（Direct Digital
Synthesizer, Direct Digital Synthesizer）To realize.Frequency signal is needed by repeatedly mixing in implementation process
And filtering, implementation process is complex, and realizes that the cost of frequency source is higher by this way.
Utility model content
The purpose of this utility model is to provide a kind of Phase Continuation frequency source, it is intended to solves current Phase Continuation frequency source
The problem of implementation process complexity and higher cost.
To achieve the above object, the technical solution adopted in the utility model is：A kind of Phase Continuation frequency source is provided, wrapped
Include：The reference frequency module of reference frequency signal is produced, the first of the first frequency band signals is generated according to the reference frequency signal
Phase module is locked, the second lock phase mould of the second frequency band signals is generated according to the reference frequency signal and first frequency band signals
Block, the 3rd lock phase module of the 3rd frequency band signals is generated according to the reference frequency signal, according to by the reference frequency signal
The 4th lock phase module of the 4th frequency band signals is generated, respectively to first frequency band signals, second frequency band signals, described the
The amplification module that three frequency band signals and the 4th frequency band signals are amplified, respectively to the first frequency band signals after amplification, put
The filtering mould that the 3rd frequency band signals after the second frequency band signals, amplification after big and the 4th frequency band signals after amplification are filtered
Block, first frequency band signals, second frequency band signals, the 3rd frequency band signals and the 4th frequency band signals are carried out
The handover module of output switching, and control it is described first lock phase module, it is described second lock phase module, it is described 3rd lock phase module,
The control module of the 4th lock phase module and the handover module；
The input with the described first lock phase module, described second lock phase mould to the output end of the reference frequency module respectively
The first input end of block, the input of the 3rd lock phase module are connected with the input of the described 4th lock phase module；
The output end of the first lock phase module locks phase with the first input end of the amplification module and described second respectively
Second input of module is connected；The output end of the second lock phase module is connected with the second input of the amplification module；
The output end of the 3rd lock phase module is connected with the 3rd input of the amplification module；It is described 4th lock phase module with it is described
4th input of amplification module is connected；
The output end of the amplification module is connected with the input of the filtration module；The output end of the filtration module with
The input of the handover module is connected；The control terminal of the control module respectively with described first lock phase module control terminal,
It is described second lock phase module control terminal, it is described 3rd lock phase module control terminal, it is described 4th lock phase module control terminal and
The control terminal of the handover module is connected.
Further, the reference frequency module includes derived reference signal and the first wave filter；The derived reference signal
Output end is connected with the input of first wave filter, and the output end of first wave filter locks phase mould with described first respectively
The input of block, the first input end of the second lock phase module, the input of the 3rd lock phase module and the 4th lock
The input of phase module is connected.
Further, the first lock phase module includes the first phase locking unit and the second wave filter；First phase locking unit
Input is connected with the output end of the reference frequency module, the output end of first phase locking unit and second wave filter
Input is connected, and the output end of second wave filter locks phase with the first input end of the amplification module and described second respectively
Second input of module is connected, and the control terminal of first phase locking unit is connected with the control terminal of the controller.
Further, the second lock phase module includes the second phase locking unit, the first frequency mixer and the 3rd wave filter；Described
The input of two phase locking units is connected with the output end of the reference frequency module, the output end of second phase locking unit and described the
The first input end of one frequency mixer is connected, the output end of the second input of first frequency mixer and the described first lock phase module
It is connected, the output end of first frequency mixer is connected with the input of the 3rd wave filter, the output of the 3rd wave filter
End is connected with the second input of the amplification module, the control of the control terminal of second phase locking unit and first frequency mixer
The control terminal with the control module is held to be connected.
Further, the 3rd wave filter includes at least four subfilters and carries out circuit switching according to control signal
Second frequency band signals are made to be switched by the switching of any subfilter in the 3rd wave filter；The subfilter and institute
State switching switch to be connected, the control terminal of the switching switch is connected with the control terminal of the control module.
Further, the 3rd lock phase module includes the 3rd phase locking unit and the 4th wave filter；3rd phase locking unit
Input is connected with the output end of the reference frequency module, output end and the 4th wave filter of the 3rd phase locking unit
Input is connected, and the output end of the 4th wave filter is connected with the 3rd input of the amplification module, the 3rd lock phase
The control terminal of device is connected with the control terminal of the controller.
Further, the 4th lock phase module includes the 4th phase locking unit, the 5th phase locking unit, the second frequency mixer and the 5th filter
Ripple device；The output of the input of 4th phase locking unit and the input of the 5th phase locking unit with the reference frequency module
End is connected, and the output end of the 4th phase locking unit is connected with the first input end of second frequency mixer, the 5th phase locking unit
Output end be connected with the second input of second frequency mixer, the output end of second frequency mixer with the described 5th filtering
The input of device is connected, and the output end of the 5th wave filter is connected with the 4th input of the amplification module, and the described 4th
Control of the control terminal of the control terminal of phase locking unit, the control terminal of the 5th phase locking unit and the second frequency mixer with the controller
End is connected.
Further, the amplification module includes the first amplifier, the second amplifier, the 3rd amplifier and the 4th amplification
Device；The input of first amplifier is connected with the output end of the described first lock phase module, the input of second amplifier
The output end with the described second lock phase module is held to be connected, the input of the 3rd amplifier is defeated with the described 3rd lock phase module
Go out end to be connected, the input of the 4th amplifier is connected with the output end of the described 4th lock phase module, first amplifier
Output end, the output end of second amplifier, the output end of the 3rd amplifier and the output of the 4th amplifier
The input with the filtration module is held to be connected.
Further, the filtration module includes the first filter unit, the second filter unit, the 3rd filter unit and the 4th
Filter unit；The input of first filter unit, the input of second filter unit, the 3rd filter unit
Output end of the input of input and the 4th filter unit with the amplification module is connected, first filter unit
Output end, the output end of second filter unit, the output end of the 3rd filter unit and the 4th filter unit
Input of the output end with the handover module be connected.
Further, first filter unit, second filter unit, the 3rd filter unit and the described 4th
Filter unit includes wave filter；First filter unit, second filter unit, the 3rd filter unit and described
Wave filter in 4th filter unit is low pass filter.
The beneficial effect of Phase Continuation frequency source provided by the utility model is：It is respectively synthesized by four lock phase modules
Four road frequency band signals, output is switched over to four road frequency band signals by handover module, realize wide band phase continuity frequency
Rate signal output, the implementation process of phase continuity frequency source can be simplified, simplify the structure of frequency source, reduce cost.
Brief description of the drawings
Fig. 1 is the structural representation for the Phase Continuation frequency source that the utility model one embodiment provides；
Fig. 2 is the structural representation for the Phase Continuation frequency source that another embodiment of the utility model provides.
In figure：100th, reference frequency module；101st, derived reference signal；102nd, the first wave filter；200th, the first lock phase module；
201st, the first phase locking unit；202nd, the second wave filter；300th, the second lock phase module；301st, the second phase locking unit；302nd, the first frequency mixer；
303rd, the 3rd wave filter；400th, the 3rd lock phase module；401st, the 3rd phase locking unit；402nd, the 4th wave filter；500th, the 4th lock phase mould
Block；501st, the 4th phase locking unit；502nd, the 5th phase locking unit；503rd, the second frequency mixer；504th, the 5th wave filter；600th, amplification module；
601st, the first amplifier；602nd, the second amplifier；603rd, the 3rd amplifier；604th, the 4th amplifier；700th, filtration module；701、
First filter unit；702nd, the second filter unit；703rd, the 3rd filter unit；704th, the 4th filter unit；800th, handover module；
900th, control module.
Embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, with
Lower combination drawings and Examples, the utility model is further elaborated.It is it should be appreciated that described herein specific real
Example is applied only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, existing illustrate to Phase Continuation frequency source provided by the utility model.The Phase Continuation frequency
Source, include producing the reference frequency module 100 of reference frequency signal, the of the first frequency band signals is generated according to reference frequency signal
One lock phase module 200, the second lock phase module of the second frequency band signals is generated according to reference frequency signal and the first frequency band signals
300, the 3rd lock phase module 400 of the 3rd frequency band signals is generated according to reference frequency signal, is generated according to by reference frequency signal
4th frequency band signals the 4th lock phase module 500, respectively to the first frequency band signals, the second frequency band signals, the 3rd frequency band signals and
The amplification module 600 that 4th frequency band signals are amplified, respectively to the first frequency band signals after amplification, the second frequency range after amplification
The filtration module 700 that the 4th frequency band signals after the 3rd frequency band signals and amplification after signal, amplification are filtered, to the first frequency
Segment signal, the second frequency band signals, the 3rd frequency band signals and the 4th frequency band signals carry out the handover module 800 of output switching, and control
The lock phase module 200, second of system first locks phase module the 300, the 3rd and locks the lock phase module 500 of phase module the 400, the 4th and handover module
800 control module 900.
The input with the first lock phase module 200, second lock phase module 300 to the output end of reference frequency module 100 respectively
First input end, the 3rd lock phase module 400 input and the 4th lock phase module 500 input be connected.First lock phase mould
Second input of the output end of block 200 respectively with the first input end of amplification module 600 and the second lock phase module 300 is connected.
The output end of second lock phase module 300 is connected with the second input of amplification module 600.The output end of 3rd lock phase module 400
It is connected with the 3rd input of amplification module 600.4th lock phase module 500 is connected with the 4th input of amplification module 600.Put
The output end of big module 600 is connected with the input of filtration module 700.The output end of filtration module 700 and handover module 800
Input is connected.The control terminal with the first lock phase module 200, second lock phase module 300 to the control terminal of control module 900 respectively
Control terminal, the control terminal of the 3rd lock phase module 400, the 4th lock the control terminal of phase module 500 and the control terminal phase of handover module 800
Even.
Phase Continuation frequency source provided by the utility model, four road frequency band signals are respectively synthesized by four lock phase modules,
Output is switched over to four road frequency band signals by handover module 800, realizes wide band phase continuity frequency signal output,
The implementation process of phase continuity frequency source can be simplified, the structure of frequency source is simplified, reduce cost.
Control module includes processor.Processor can be CPU (Central Processing Unit,
CPU), can also be other general processors, digital signal processor (Digital Signal Processor, DSP), specially
With integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array
(Field-Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor
Logical device, discrete hardware components etc..General processor can be microprocessor or the processor can also be any routine
Processor etc..
Alternatively, the first frequency band signals, the second frequency band signals, the 3rd frequency band signals and the 4th frequency band signals can be right successively
It should be L band frequencies signal, X band frequencies signal, S band frequencies signal and C band frequency signals.For example, the frequency of the first frequency band signals
Scope is 1.7GHz ~ 2.2Ghz, and the frequency ranges of the second frequency band signals is 8GHz ~ 12Ghz, the frequency range of the 3rd frequency band signals
For 2.7GHz ~ 3.5Ghz, the frequency range of the 4th frequency band signals is 5.2GHz ~ 5.8Ghz.It is readily apparent that, each frequency band signals
Frequency range can according to demand depending on, be not limited thereto.Handover module 800 can make Phase Continuation frequency source by switching
One or more of four frequency band signals of output frequency band signals.For example, handover module 800 can select a switching to switch for four,
Then Phase Continuation frequency source exports a frequency band signals in four frequency band signals；Handover module 800 can also be included in each
The gate-controlled switch that frequency band signals corresponding line is separately provided, then Phase Continuation frequency source can export one in four frequency band signals
Individual or multiple frequency band signals.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, reference frequency module 100 include the wave filter 102 of derived reference signal 101 and first.The output of derived reference signal 101
End is connected with the input of the first wave filter 102.The output end of first wave filter 102 by reference to frequency module 100 output
The input with the first lock phase module 200, the first input end of the second lock phase module 300, the 3rd lock phase module 400 respectively at end
The input of input and the 4th lock phase module 500 is connected.
Wherein, the first wave filter 102 is filtered to reference frequency signal caused by derived reference signal 101.Alternatively, join
100Mhz reference frequency signal can be exported by examining signal source 101.First wave filter 102 can be bandpass filter.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, the first lock phase module 200 include the first phase locking unit 201 and the second wave filter 202.The input of first phase locking unit 201
End is connected with the output end of reference frequency module 100.The output end of first phase locking unit 201 and the input of the second wave filter 202
It is connected.The output end of second wave filter 202 by first lock phase module 200 output end respectively with amplification module 600 first
Second input of input and the second lock phase module 300 is connected.The control terminal and controller of first phase locking unit 201（In Fig. 2 not
Mark）Control terminal be connected.
Wherein, the first phase locking unit 201 generates the first frequency band signals according to reference frequency signal, and the second wave filter 202 is to the
One frequency band signals are filtered.Alternatively, the second wave filter 202 can be bandpass filter.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, the second lock phase module 300 include the second phase locking unit 301, the first frequency mixer 302 and the 3rd wave filter 303.Second lock
The input of phase device 301 is connected with the output end of reference frequency module 100.The output end of second phase locking unit 301 and the first mixing
The first input end of device 302 is connected.Second input of the first frequency mixer 302 is connected with the output end of the first lock phase module 200.
The output end of first frequency mixer 302 is connected with the input of the 3rd wave filter 303.The output end of 3rd wave filter 303 passes through
The output end of two lock phase modules 300 is connected with the second input of amplification module 600.The control terminal of second phase locking unit 301 and
Control terminal of the control terminal of one frequency mixer 302 with control module 900 is connected.
Wherein, the signal that the first frequency band signals and the second phase locking unit 301 export is mixed by the first frequency mixer 302, is obtained
To the second frequency band signals.For example, the frequency range of the first frequency band signals is 1.7GHz ~ 2.2Ghz, the second phase locking unit 301 is exportable
Signal frequency range be 6.3GHz ~ 10.3Ghz, then the frequency range of the second frequency band signals after being mixed is 8GHz ~ 12Ghz.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, the 3rd wave filter 303 include at least four subfilters and make the second frequency according to control signal progress circuit switching
Segment signal is switched by the switching of any subfilter in the 3rd wave filter 303.Subfilter is connected with switching switch.Switching is opened
The control terminal of pass is connected with the control terminal of control module 900.
For example, the frequency range of the second frequency band signals is 8GHz ~ 12Ghz, the 3rd wave filter 303 can include four sons and filter
Ripple device, passband width are followed successively by 8GHz ~ 9Ghz, 9GHz ~ 10Ghz, 10GHz ~ 11Ghz and 10GHz ~ 12Ghz.Control module 900
Free transmission range according to belonging to the frequency for the second frequency band signals that the first frequency mixer 302 exports determines the frequency, switched to switching
Control signal is sent, switching switch makes the second frequency band signals include the by four sub- filter passband scopes according to control signal
The subfilter of two frequency band signals is filtered.In addition, the 3rd wave filter 303 can also include five subfilters, passband is wide
Degree be followed successively by 8GHz ~ 8.8Ghz, 8.8GHz ~ 9.6Ghz, 9.6GHz ~ 10.4Ghz, 10.4GHz ~ 11.2Ghz and 11.2GHz ~
12Ghz.It is readily apparent that, the number for the subfilter that the 3rd wave filter 303 includes and the passband width of each subfilter
There can also be other forms, be not limited thereto.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, the 3rd lock phase module 400 include the 3rd phase locking unit 401 and the 4th wave filter 402.The input of 3rd phase locking unit 401
End is connected with the output end of reference frequency module 100.The output end of 3rd phase locking unit 401 and the input of the 4th wave filter 402
It is connected.The output end of 4th wave filter 402 passes through the output end of the 3rd lock phase module 400 and the 3rd input of amplification module 600
End is connected.The control terminal of 3rd phase locking unit 401 is connected with the control terminal of controller.
Wherein, the 3rd phase locking unit 401 generates the 3rd frequency band signals according to reference frequency signal, and the 4th wave filter 402 is to the
Three frequency band signals are filtered.Alternatively, the 4th wave filter 402 can be bandpass filter.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, the 4th lock phase module 500 include the 4th phase locking unit 501, the 5th phase locking unit 502, the second frequency mixer 503 and the 5th filter
Ripple device 504.The output of the input of 4th phase locking unit 501 and the input of the 5th phase locking unit 502 with reference frequency module 100
End is connected.The output end of 4th phase locking unit 501 is connected with the first input end of the second frequency mixer 503.5th phase locking unit 502 it is defeated
Go out end with the second input of the second frequency mixer 503 to be connected.The output end of second frequency mixer 503 is defeated with the 5th wave filter 504
Enter end to be connected.The output end and the 4th of amplification module 600 that the output end of 5th wave filter 504 passes through the 4th lock phase module 500
Input is connected.The control terminal of the control terminal of 4th phase locking unit 501, the control terminal of the 5th phase locking unit 502 and the second frequency mixer 503
It is connected with the control terminal of controller.
Wherein, the signal that the signal and the 5th phase locking unit 502 that the second frequency mixer 503 exports the 4th phase locking unit 501 export
It is mixed, synthesizes the 4th frequency band signals.For example, the frequency range of the output signal of the 4th phase locking unit 501 is 1GHz ~ 1.6Ghz,
The frequency range of the output signal of 5th phase locking unit 502 is 4.2GHz, then the frequency range of the 4th frequency band signals after being mixed is
5.2GHz~5.8Ghz。
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, amplification module 600 include the first amplifier 601, the second amplifier 602, the 3rd amplifier 603 and the 4th amplifier
604.The input of first amplifier 601 is connected with the output end of the first lock phase module 200.The input of second amplifier 602
It is connected with the output end of the second lock phase module 300.The output end of the input of 3rd amplifier 603 and the 3rd lock phase module 400
It is connected.The input of 4th amplifier 604 is connected with the output end of the 4th lock phase module 500.The output of first amplifier 601
The output end at end, the output end of the second amplifier 602, the output end of the 3rd amplifier 603 and the 4th amplifier 604 is by putting
The output end of big module 600 is connected with the input of filtration module 700.
Wherein, the first amplifier 601, the second amplifier 602, the 3rd amplifier 603 and the 4th amplifier 604 are used for successively
First frequency band signals, the second frequency band signals, the 3rd frequency band signals and the 4th frequency band signals are amplified.
Further, Fig. 1 and Fig. 2 is referred to, one kind as Phase Continuation frequency source provided by the utility model is specific
Embodiment, filtration module 700 include the first filter unit 701, the second filter unit 702, the 3rd filter unit 703 and the 4th
Filter unit 704.The input of first filter unit 701, the input of the second filter unit 702, the 3rd filter unit 703
Output end of the input of input and the 4th filter unit 704 with amplification module 600 is connected.First filter unit 701
Output end, the output end of the second filter unit 702, the output end of the 3rd filter unit 703 and the output of the 4th filter unit 704
End is connected by the output end of filtration module 700 with the input of handover module 800.
Further, a kind of embodiment as Phase Continuation frequency source provided by the utility model, the first filter
Ripple unit 701, the second filter unit 702, the 3rd filter unit 703 and the 4th filter unit 704 include wave filter.First filter
Wave filter in ripple unit 701, the second filter unit 702, the 3rd filter unit 703 and the 4th filter unit 704 is low pass
Wave filter.
In the present embodiment, enter in the first frequency band signals, the second frequency band signals, the 3rd frequency band signals and the 4th frequency range and put
Before big module 600, the clutter in each frequency range is filtered out by bandpass filter.The signal of each frequency range is passing through
After amplification module 600, the clutter included in signal is harmonic wave, and the frequency of harmonic wave is usually the whole of corresponding frequency band signal frequency
Several times, therefore the first filter unit 701, the second filter unit 702, the 3rd filter unit 703 and the 4th filtering can be utilized single
Low pass filter in member 704 filters out the harmonic wave in signal.
As one embodiment of the present of invention, phase locking unit can select model ADF4351 and/or model ADF5355
Phase locking unit chip.The phase adjustment position (position DB28) of the two phase locking unit chips decides whether to allow to giving output frequency
Output phase is adjusted.When phase adjustment enables (position DB28 is set to 1), chip does not perform VCO frequencies when register 0 updates
Section selection or phase resynchronisation；Phase adjustment unused bit（When DB28 is set to 0), chip performs VCO when register 0 updates
Frequency Band Selection and phase resynchronisation.When we carry out frequency hopping, phase adjustment position is also synchronous with PRT, carries out the tune of phase
It is whole, then store data into register, when jumping to next frequency, start-phase and the phase one of register storage
Cause.ADF4351 has the control phase word of 12, and phase word is used for setting RF output phases, and from 0 ° to 360 °, resolution ratio is
360 °/MOD, its modulus (MOD) may be configured as any integer value from 2 to 4095.ADF4351 phase resynchronisation characteristic
It can produce and be offset relative to input with reference to consistent output phase.Phase word control RF output phases in register 1.When this
Phase word from 0 be swept to MOD when, the high-precision tune of phase can be achieved with inswept 360 ° of 360 °/MOD stepping in RF output phases
It is whole, so as to ensure the continuous of frequency hopping phase.
The phase noise of the Phase Continuation frequency source provided below the present embodiment calculates, with the first frequency band signals
Frequency range is 1.7GHz ~ 2.2Ghz, and the frequency ranges of the second frequency band signals is 8GHz ~ 12Ghz, the frequency of the 3rd frequency band signals
Scope is 2.7GHz ~ 3.5Ghz, specific as follows exemplified by the frequency ranges of the 4th frequency band signals is 5.2GHz ~ 5.8Ghz：
System phase noise adds normalization noise to form by flicker noise, wherein
Normalize noise calculation formula：PNTOT=PNSYNTH+10log(fPFD)+20logN；
Flicker noise calculation formula：PN=PN1_f+10log(10kHz/f)+20log(fFR/1GHz).
L-band 1.7GHz~2.2GHz normalizes phase noise：-221+10log2MHz+20log1100=-98dBc/
Hz@1kHz；
Flicker noise is：-116+10log10+10log2.2=-102dBc/Hz@1kHz；Flicker noise is made an uproar less than normalization
Sound, calculate two noises and be about：-97dBc/Hz@1kHz.
X-band GHz8~12GHz phase noises：Calculating 6.3GHz~10.3GHz normalization phase noises first is：-221
+10log500MHz+20log20.6=-107.8dBc/Hz@1kHz；Flicker noise is：-116+10log10+10log10.3=-
96dBc/Hz@1kHz；Two noises and about -95dBc/Hz 1kHz are calculated, after being mixed with 1.7GHz~2.2GHz, because
6.3GHz~10.3GHz phase noises are close with mutually making an uproar for 1.7~2.2GHz, thus 8GHz~12GHz mutually make an uproar about-
89dBc/Hz@1kHz。
S-band 2.7GHz~3.5GHz normalizes phase noise：-221+10log2MHz+20log1750=-93dBc/
Hz@1kHz；Flicker noise is：-116+10log10+10log3.5=-100dBc/Hz@1kHz；Flicker noise is made an uproar less than normalization
Sound, calculate two noises and be about：-92dBc/Hz@1kHz.
C-band 5.2GHz~5.8GHz phase noises depend primarily on mutually making an uproar for 1~1.6GHz：It normalizes phase noise
For -221+10log2MHz+20log800=- 100dBc/Hz@1kHz；Flicker noise is：-116+10log10+10log1.6=-
104dBc/Hz@1kHz；Flicker noise is less than normalization noise, calculates two noises and is about：-99dBc/Hz@1kHz.
It is computed, the worst total phase noise of Phase Continuation frequency source is -89dBc/[email protected] can be seen that this implementation
The phase noise for the Phase Continuation frequency source that example provides is small, and phase continuity is good.
Phase Continuation frequency source provided by the utility model, four road frequency band signals are respectively synthesized by four lock phase modules,
Output is switched over to four road frequency band signals by handover module 800, realizes wide band phase continuity frequency signal output,
The implementation process of phase continuity frequency source can be simplified, the structure of frequency source is simplified, reduce cost.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. Phase Continuation frequency source, it is characterised in that including：The reference frequency module of reference frequency signal is produced, according to The reference frequency signal generates the first lock phase module of the first frequency band signals, according to the reference frequency signal and described first Frequency band signals generate the second lock phase module of the second frequency band signals, and the 3rd frequency band signals are generated according to the reference frequency signal 3rd lock phase module, according to the 4th lock phase module that the reference frequency signal is generated to the 4th frequency band signals, respectively to described What the first frequency band signals, second frequency band signals, the 3rd frequency band signals and the 4th frequency band signals were amplified puts Big module, respectively to the first frequency band signals after amplification, amplification after the second frequency band signals, amplification after the 3rd frequency band signals and The filtration module that the 4th frequency band signals after amplification are filtered, to first frequency band signals, second frequency band signals, institute State the 3rd frequency band signals and the 4th frequency band signals carry out the handover module of output switching, and control the first lock phase mould Block, it is described second lock phase module, it is described 3rd lock phase module, it is described 4th lock phase module and the handover module control mould Block；The input with the described first lock phase module, described second lock phase module to the output end of the reference frequency module respectively First input end, the input of the 3rd lock phase module are connected with the input of the described 4th lock phase module；The output end of the first lock phase module locks phase module with the first input end of the amplification module and described second respectively The second input be connected；The output end of the second lock phase module is connected with the second input of the amplification module；It is described The output end of 3rd lock phase module is connected with the 3rd input of the amplification module；The 4th lock phase module and the amplification 4th input of module is connected；The output end of the amplification module is connected with the input of the filtration module；The output end of the filtration module with it is described The input of handover module is connected；The control terminal of the control module control terminal, described with the described first lock phase module respectively The control terminal of second lock phase module, the control terminal of the 3rd lock phase module, the 4th lock control terminal of phase module and described The control terminal of handover module is connected.
- 2. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the reference frequency module includes reference signal Source and the first wave filter；The output end of the derived reference signal is connected with the input of first wave filter, first filter The output end of ripple the device input with the described first lock phase module, the first input end, described of the second lock phase module respectively The input of 3rd lock phase module is connected with the input of the described 4th lock phase module.
- 3. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the first lock phase module includes the first lock phase Device and the second wave filter；The input of first phase locking unit is connected with the output end of the reference frequency module, and described first The output end of phase locking unit is connected with the input of second wave filter, and the output end of second wave filter is put with described respectively The first input end of big module is connected with the second input of the described second lock phase module, the control terminal of first phase locking unit with The control terminal of the controller is connected.
- 4. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the second lock phase module includes the second lock phase Device, the first frequency mixer and the 3rd wave filter；The input of second phase locking unit and the output end phase of the reference frequency module Even, the output end of second phase locking unit is connected with the first input end of first frequency mixer, and the of first frequency mixer Two inputs are connected with the output end of the described first lock phase module, the output end of first frequency mixer and the 3rd wave filter Input be connected, the output end of the 3rd wave filter is connected with the second input of the amplification module, it is described second lock The control terminal of the control terminal of phase device and the control terminal of first frequency mixer with the control module is connected.
- 5. Phase Continuation frequency source as claimed in claim 4, it is characterised in that the 3rd wave filter includes at least four sons Wave filter and according to control signal carry out circuit switching second frequency band signals is passed through any son in the 3rd wave filter The switching switch of wave filter；The subfilter is connected with the switching switch, the control terminal of the switching switch and the control The control terminal of molding block is connected.
- 6. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the 3rd lock phase module includes the 3rd lock phase Device and the 4th wave filter；The input of 3rd phase locking unit is connected with the output end of the reference frequency module, and the described 3rd The output end of phase locking unit is connected with the input of the 4th wave filter, output end and the amplification mould of the 4th wave filter 3rd input of block is connected, and the control terminal of the 3rd phase locking unit is connected with the control terminal of the controller.
- 7. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the 4th lock phase module includes the 4th lock phase Device, the 5th phase locking unit, the second frequency mixer and the 5th wave filter；The input of 4th phase locking unit and the 5th phase locking unit Output end of the input with the reference frequency module is connected, output end and second frequency mixer of the 4th phase locking unit First input end be connected, the output end of the 5th phase locking unit is connected with the second input of second frequency mixer, described The output end of second frequency mixer is connected with the input of the 5th wave filter, and the output end of the 5th wave filter is put with described 4th input of big module is connected, and the control terminal of the 4th phase locking unit, the control terminal of the 5th phase locking unit and second are mixed Control terminal of the control terminal of frequency device with the controller is connected.
- 8. Phase Continuation frequency source as claimed in claim 1, it is characterised in that the amplification module include the first amplifier, Second amplifier, the 3rd amplifier and the 4th amplifier；The input of first amplifier and the described first lock phase module Output end is connected, and the input of second amplifier is connected with the output end of the described second lock phase module, the 3rd amplification The input of device is connected with the output end of the described 3rd lock phase module, the input of the 4th amplifier and the described 4th lock phase The output end of module is connected, the output end of first amplifier, the output end of second amplifier, the 3rd amplifier Output end and input of the output end with the filtration module of the 4th amplifier be connected.
- 9. Phase Continuation frequency source as claimed in claim 1, it is characterised in that it is single that the filtration module includes the first filtering Member, the second filter unit, the 3rd filter unit and the 4th filter unit；The input of first filter unit, described second The input of the input of filter unit, the input of the 3rd filter unit and the 4th filter unit is put with described The output end of big module is connected, the output end of first filter unit, the output end of second filter unit, the described 3rd The input of the output end of filter unit and the output end of the 4th filter unit with the handover module is connected.
- 10. Phase Continuation frequency source as claimed in claim 9, it is characterised in that first filter unit, second filter Ripple unit, the 3rd filter unit and the 4th filter unit include wave filter；First filter unit, described Wave filter in two filter units, the 3rd filter unit and the 4th filter unit is low pass filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721073052.7U CN207184457U (en) | 2017-08-25 | 2017-08-25 | Phase continuation frequency source |
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| CN201721073052.7U CN207184457U (en) | 2017-08-25 | 2017-08-25 | Phase continuation frequency source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100689A (en) * | 2018-07-24 | 2018-12-28 | 北京无线电测量研究所 | A kind of thin step frequency source of Phase Continuation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100689A (en) * | 2018-07-24 | 2018-12-28 | 北京无线电测量研究所 | A kind of thin step frequency source of Phase Continuation |
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