CN208015708U - A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band - Google Patents
A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band Download PDFInfo
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- CN208015708U CN208015708U CN201820850260.1U CN201820850260U CN208015708U CN 208015708 U CN208015708 U CN 208015708U CN 201820850260 U CN201820850260 U CN 201820850260U CN 208015708 U CN208015708 U CN 208015708U
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Abstract
The utility model is related to a kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band, including three road power splitters, three road output ends of three road power splitters are separately connected the input terminal of phase-locked loop circuit I, phase-locked loop circuit II, phase-locked loop circuit III；The input terminal of the output end connection low-pass filter I of phase-locked loop circuit I, the input terminal of the output end connection either-or switch I of low-pass filter I；The input terminal of the output end connection low-pass filter II of phase-locked loop circuit II, the input terminal of the output end connection either-or switch II of low-pass filter II；The input terminal of the output end connection low-pass filter III of phase-locked loop circuit III, the input terminal of the output end connection either-or switch III of low-pass filter III；Either-or switch I, either-or switch II, either-or switch III output end be all connected with the input terminal of three elections switch.The frequency hopping source circuit of the utility model improves frequency hopping rate and performance of mutually making an uproar, and increases isolation, meets the performance requirement of frequency synthesizer.
Description
Technical field
The utility model belongs to radar communication field, in particular relates to a kind of polycyclic road high isolation bandwidth locking phase of L-band
Frequency hopping source circuit.
Background technology
Frequency synthesizer is one of the key device that radar and communication system realize high performance index.Frequency synthesizer includes
Four kinds of direct-type frequency synthesis, the frequency synthesis of locking phase (indirect) formula, direct digital signal synthesizing and hybrid frequency synthesis.With thunder
Up to the continuous development of the field technologies such as communication, requirements at the higher level, low noise, high isolation are proposed to the comprehensive performance of frequency synthesizer
And high frequency hopping rate becomes the important trend of frequency synthesizer.
Utility model content
According to problems of the prior art, the utility model provides a kind of polycyclic road high isolation bandwidth lock of L-band
Phase frequency hopping source circuit, which raises frequency hopping rates and performance of mutually making an uproar, and increase isolation, and the performance for meeting frequency synthesizer is wanted
It asks.
The utility model uses following technical scheme：
A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band, including three road power splitters, three road power splitter
Input terminal external reference clock input, three road output ends of three road power splitters are separately connected phase-locked loop circuit I, phase-locked loop circuit
II, the input terminal of phase-locked loop circuit III；The input terminal of the output end connection low-pass filter I of the phase-locked loop circuit I, low pass filtered
The input terminal of the output end connection either-or switch I of wave device I；The output end of the phase-locked loop circuit II connects low-pass filter II
Input terminal, low-pass filter II output end connection either-or switch II input terminal；The output of the phase-locked loop circuit III
The input terminal of end connection low-pass filter III, the input terminal of the output end connection either-or switch III of low-pass filter III；It is described
Either-or switch I, either-or switch II, either-or switch III output end be all connected with the input terminal of three elections switch, one-out-three
The output end of switch exports L-band frequency signal.
Preferably, the phase-locked loop circuit I include digital circuit I, phase discriminator I, loop filter I, voltage controlled oscillator I,
Droop amplifier I, low-pass filter IV；The input terminal of the phase discriminator I is separately connected the defeated of three road power splitters and digital circuit I
The output end of outlet, the input terminal of the output end linkloop filter I of phase discriminator I, loop filter I connects voltage controlled oscillator
I input terminal, the output end of voltage controlled oscillator I are separately connected the input terminal of droop amplifier I and low-pass filter I, and decaying is put
The input terminal of the output end connection low-pass filter IV of big device I, the input of the output end connection phase discriminator I of low-pass filter IV
End.
It is further preferred that the phase-locked loop circuit II includes digital circuit II, phase discriminator II, loop filter II, pressure
Control oscillator II, droop amplifier II, low-pass filter V；The input terminal of the phase discriminator II be separately connected three road power splitters and
The output end of digital circuit II, the input terminal of the output end linkloop filter II of phase discriminator II, loop filter II it is defeated
Outlet connects the input terminal of voltage controlled oscillator II, and the output end of voltage controlled oscillator II is separately connected droop amplifier II and low pass filtered
The input terminal of wave device II, droop amplifier II output end connection low-pass filter V input terminal, low-pass filter V it is defeated
Outlet connects the input terminal of phase discriminator II.
Still more preferably, the phase-locked loop circuit III include digital circuit III, phase discriminator III, loop filter III,
Voltage controlled oscillator III, droop amplifier III, low-pass filter VI；The input terminal of the phase discriminator III is separately connected three road power splitters
With the output end of digital circuit III, the input terminal of the output end linkloop filter III of phase discriminator III, loop filter III
Output end connects the input terminal of voltage controlled oscillator III, and the output end of voltage controlled oscillator III is separately connected droop amplifier III and low pass
The input terminal of filter III, the input terminal of the output end connection low-pass filter VI of droop amplifier III, low-pass filter VI
Output end connects the input terminal of phase discriminator III.
Still more preferably, the phase discriminator I, phase discriminator II, phase discriminator III are using HITTITE companies
HMC440QS16G models；The voltage controlled oscillator I, voltage controlled oscillator II, voltage controlled oscillator III are public using Mini-Circuits
The ROS-1480-219+ models of department；The either-or switch I, either-or switch II, either-or switch III are public using HITTITE
The HMC492LP3 models of department；The three elections switch uses the HMC245QS16 models of HITTITE companies；The digital circuit
I, digital circuit II, digital circuit III use the EPM570T100I5 models of AELTERA companies.
The beneficial effects of the utility model are：
1) the frequency hopping source circuit of the utility model adds the side of either-or switch combination using the phase-locked loop circuit on polycyclic road
Formula, by locking phase synthesis improve performance of mutually making an uproar, reduce it is spuious；Switched by the combination of either-or switch and three elections switch
Frequency hopping rate is improved, isolation is increased, improves the comprehensive performance of frequency hopping source circuit.
2) phase discriminator I of the utility model, phase discriminator II, phase discriminator III are using HITTITE companies
HMC440QS16G models, improve performance of mutually making an uproar.
Description of the drawings
Fig. 1 is the circuit diagram of the frequency hopping source circuit of the utility model.
Fig. 2 is the circuit diagram of the phase-locked loop circuit I of the utility model.
Fig. 3 is the circuit diagram of the phase-locked loop circuit II of the utility model.
Fig. 4 is the circuit diagram of the phase-locked loop circuit III of the utility model.
Reference numeral：Tri- road power splitters of 1-, 2- phase-locked loop circuits I, 3- phase-locked loop circuits II, 4- phase-locked loop circuits III, 5-
Low-pass filter I, 6- either-or switch I, 7- low-pass filters II, 8- either-or switch II, 9- low-pass filters III, 10- bis-
Select a switch III, 11- three elections switches, 21- digital circuits I, 22- phase discriminators I, 23- loop filters I, 24- voltage controlled oscillators
I, 25- droop amplifier I, 26- low-pass filters IV, 31- digital circuits II, 32- phase discriminators II, 33- loop filters II,
34- voltage controlled oscillators II, 35- droop amplifiers II, 36- low-pass filters V, 41- digital circuits III, 42- phase discriminators III, 43-
Loop filter III, 44- voltage controlled oscillators III, 45- droop amplifiers III, 46- low-pass filters VI.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band, including three road power splitters 1, institute
The external reference clock input of input terminal of three road power splitters 1 is stated, three road output ends of three road power splitters 1 are separately connected phaselocked loop electricity
Road I 2, phase-locked loop circuit II 3, phase-locked loop circuit III 4 input terminal；The output end of the phase-locked loop circuit I 2 connects low-pass filtering
The input terminal of device I 5, the input terminal of the output end connection either-or switch I 6 of low-pass filter I 5；The phase-locked loop circuit II 3
Output end connects the input terminal of low-pass filter II 7, the input of the output end connection either-or switch II 8 of low-pass filter II 7
End；The input terminal of the output end connection low-pass filter III 9 of the phase-locked loop circuit III 4, the output end of low-pass filter III 9 connect
Connect the input terminal of either-or switch III 10；The output of the either-or switch I 6, either-or switch II 8, either-or switch III 10
End is all connected with the input terminal of three elections switch 11, and the output end of three elections switch 11 exports L-band frequency signal.
As shown in Fig. 2, the phase-locked loop circuit I 2 includes digital circuit I 21, phase discriminator I 22, loop filter I 23, pressure
Control oscillator I 24, droop amplifier I 25, low-pass filter IV 26；The input terminal of the phase discriminator I 22 is separately connected three road work(
Divide the output end of device 1 and digital circuit I 21, the input terminal of the output end linkloop filter I 23 of phase discriminator I 22, loop filter
The input terminal of the output end connection voltage controlled oscillator I 24 of wave device I 23, the output end of voltage controlled oscillator I 24 are separately connected decaying and put
The input terminal of big device I 25 and low-pass filter I 5, the input of the output end connection low-pass filter IV 26 of droop amplifier I 25
End, the input terminal of the output end connection phase discriminator I 22 of low-pass filter IV 26.
As shown in figure 3, the phase-locked loop circuit II 3 includes digital circuit II 31, phase discriminator II 32, loop filter II
33, voltage controlled oscillator II 34, droop amplifier II 35, low-pass filter V 36；The input terminal of the phase discriminator II 32 connects respectively
Connect the output end of three road power splitters 1 and digital circuit II 31, the output end linkloop filter II 33 of phase discriminator II 32 it is defeated
Enter end, the input terminal of the output end connection voltage controlled oscillator II 34 of loop filter II 33, the output end of voltage controlled oscillator II 34
It is separately connected the input terminal of droop amplifier II 35 and low-pass filter II 7, the output end of droop amplifier II 35 connects low pass
The input terminal of filter V 36, the input terminal of the output end connection phase discriminator II 32 of low-pass filter V 36.
As shown in figure 4, the phase-locked loop circuit III 4 includes digital circuit III 41, phase discriminator III 42, loop filter III
43, voltage controlled oscillator III 44, droop amplifier III 45, low-pass filter VI 46；The input terminal of the phase discriminator III 42 connects respectively
Connect the output end of three road power splitters 1 and digital circuit III 41, the output end linkloop filter III 43 of phase discriminator III 42 it is defeated
Enter end, the input terminal of the output end connection voltage controlled oscillator III 44 of loop filter III 43, the output end of voltage controlled oscillator III 44
It is separately connected the input terminal of droop amplifier III 45 and low-pass filter III 9, the output end of droop amplifier III 45 connects low pass
The input terminal of filter VI 46, the input terminal of the output end connection phase discriminator III 42 of low-pass filter VI 46.
The phase discriminator I 22, phase discriminator II 32, phase discriminator III 42 use the HMC440QS16G models of HITTITE companies；
The voltage controlled oscillator I 24, voltage controlled oscillator II 34, voltage controlled oscillator III 44 use the ROS- of Mini-Circuits companies
1480-219+ models；The either-or switch I 6, either-or switch II 8, either-or switch III 10 are using HITTITE companies
HMC492LP3 models；The three elections switch 11 uses the HMC245QS16 models of HITTITE companies；The digital circuit I
21, digital circuit II 31, digital circuit III 41 use the EPM570T100I5 models of AELTERA companies.
When the utility model is used, can coordinate with software in the prior art to be used.With reference to existing
The operation principle of the utility model is described in software in technology, it must be noted that be：Match with the utility model
The software of conjunction is not the innovative part of the utility model, nor the component part of the utility model.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the external 100MHz crystal oscillators of the input terminal of three road power splitter 1, crystal oscillator generate
100MHz signals by five frequency dividing take second harmonic to respectively obtain 40MHz signals, 40MHz signals divide by three road power splitters 1
Not Song Ru phase discriminator I 22, phase discriminator II 32, phase discriminator III 42, using phase discriminator I 22, phase discriminator II 32, phase discriminator III 42
Reference signal is obtained after built-in reference divider, reference signal carries out phase demodulation with loop feedback signal.
As shown in Fig. 2, the calibration voltage generated by phase discriminator I 22 is sent into voltage controlled oscillator I after loop filter I 23
24 generate output frequencies, then after droop amplifier I 25, low-pass filter IV 26 generate loop feedback signal, loop successively
Feedback signal is sent to phase discriminator I 22 and carries out phase demodulation with reference signal；After loop-locking, the control of the generation of digital circuit I 21
Signal, which is sent to phase discriminator I 22, changes frequency dividing ratio, finally obtains 800~1240MHz of signal of 40MHz stepped-frequency intervals, obtained letter
Number pass through either-or switch 6 and three elections switch 11 combination output.
Similarly, as shown in Figure 3, Figure 4,800~1240MHz of signal of 40MHz stepped-frequency intervals, obtained signal are finally obtained
Pass through either-or switch 6 and the combination output of three elections switch 11.
In conclusion the utility model provides a kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band, carry
High frequency hopping rate and performance of mutually making an uproar, increase isolation, meet the performance requirement of frequency synthesizer.
Claims (5)
1. a kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band, it is characterised in that：Including three road power splitters (1), institute
The external reference clock input of input terminal of three road power splitters (1) is stated, three road output ends of three road power splitters (1) are separately connected locking phase
The input terminal of loop circuit I (2), phase-locked loop circuit II (3), phase-locked loop circuit III (4)；The output end of the phase-locked loop circuit I (2)
Connect the input terminal of low-pass filter I (5), the input terminal of the output end connection either-or switch I (6) of low-pass filter I (5)；
The input terminal of the output end connection low-pass filter II (7) of the phase-locked loop circuit II (3), the output of low-pass filter II (7)
The input terminal of end connection either-or switch II (8)；The output end connection low-pass filter III (9) of the phase-locked loop circuit III (4)
Input terminal, low-pass filter III (9) output end connection either-or switch III (10) input terminal；The either-or switch I
(6), either-or switch II (8), either-or switch III (10) output end be all connected with the input terminal of three elections switch (11), three choosings
The output end of one switch (11) exports L-band frequency signal.
2. the polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of a kind of L-band according to claim 1, it is characterised in that：
The phase-locked loop circuit I (2) includes digital circuit I (21), phase discriminator I (22), loop filter I (23), voltage controlled oscillator I
(24), droop amplifier I (25), low-pass filter IV (26)；The input terminal of the phase discriminator I (22) is separately connected three road work(point
The output end of device (1) and digital circuit I (21), the input terminal of the output end linkloop filter I (23) of phase discriminator I (22),
The input terminal of the output end connection voltage controlled oscillator I (24) of loop filter I (23), the output end point of voltage controlled oscillator I (24)
Not Lian Jie droop amplifier I (25) and low-pass filter I (5) input terminal, the output end of droop amplifier I (25) connects low pass
The input terminal of filter IV (26), the input terminal of the output end connection phase discriminator I (22) of low-pass filter IV (26).
3. the polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of a kind of L-band according to claim 2, it is characterised in that：
The phase-locked loop circuit II (3) includes digital circuit II (31), phase discriminator II (32), loop filter II (33), voltage controlled oscillation
Device II (34), droop amplifier II (35), low-pass filter V (36)；The input terminal of the phase discriminator II (32) is separately connected three
The output end of road power splitter (1) and digital circuit II (31), the output end linkloop filter II (33) of phase discriminator II (32)
Input terminal, loop filter II (33) output end connection voltage controlled oscillator II (34) input terminal, voltage controlled oscillator II
(34) output end is separately connected the input terminal of droop amplifier II (35) and low-pass filter II (7), droop amplifier II
(35) output end of the input terminal of output end connection low-pass filter V (36), low-pass filter V (36) connects phase discriminator II
(32) input terminal.
4. the polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of a kind of L-band according to claim 3, it is characterised in that：
The phase-locked loop circuit III (4) includes digital circuit III (41), phase discriminator III (42), loop filter III (43), voltage controlled oscillation
Device III (44), droop amplifier III (45), low-pass filter VI (46)；The input terminal of the phase discriminator III (42) is separately connected three
The output end of road power splitter (1) and digital circuit III (41), the output end linkloop filter III (43) of phase discriminator III (42)
Input terminal, loop filter III (43) output end connection voltage controlled oscillator III (44) input terminal, voltage controlled oscillator III
(44) output end is separately connected the input terminal of droop amplifier III (45) and low-pass filter III (9), droop amplifier III
(45) output end of the input terminal of output end connection low-pass filter VI (46), low-pass filter VI (46) connects phase discriminator III
(42) input terminal.
5. the polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of a kind of L-band according to claim 4, it is characterised in that：
The phase discriminator I (22), phase discriminator II (32), phase discriminator III (42) use the HMC440QS16G models of HITTITE companies；Institute
Voltage controlled oscillator I (24), voltage controlled oscillator II (34), voltage controlled oscillator III (44) are stated using Mini-Circuits companies
ROS-1480-219+ models；The either-or switch I (6), either-or switch II (8), either-or switch III (10) use
The HMC492LP3 models of HITTITE companies；The three elections switch (11) uses the HMC245QS16 models of HITTITE companies；
The digital circuit I (21), digital circuit II (31), digital circuit III (41) use the EPM570T100I5 of AELTERA companies
Model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820850260.1U CN208015708U (en) | 2018-05-31 | 2018-05-31 | A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820850260.1U CN208015708U (en) | 2018-05-31 | 2018-05-31 | A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band |
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| Publication Number | Publication Date |
|---|---|
| CN208015708U true CN208015708U (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820850260.1U Active CN208015708U (en) | 2018-05-31 | 2018-05-31 | A kind of polycyclic road high isolation bandwidth locking phase frequency hopping source circuit of L-band |
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| Country | Link |
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| CN (1) | CN208015708U (en) |
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2018
- 2018-05-31 CN CN201820850260.1U patent/CN208015708U/en active Active
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