CN208316703U - A kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit - Google Patents
A kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit Download PDFInfo
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- CN208316703U CN208316703U CN201820850258.4U CN201820850258U CN208316703U CN 208316703 U CN208316703 U CN 208316703U CN 201820850258 U CN201820850258 U CN 201820850258U CN 208316703 U CN208316703 U CN 208316703U
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- local oscillator
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Abstract
The utility model relates to a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuits, including four road power splitters, the external reference clock input of the input terminal of four road power splitter, four road power splitter Zhong, tri- road output end connects local oscillation signal generation circuit, and another output end connects clock signal generating circuit；The local oscillation signal generation circuit includes a local oscillator output circuit and two local oscillator output circuits, and a local oscillator output circuit is connect with three road output end two-way output end therein, and two local oscillator output circuits are connect with the another output end in the output end of three road.The local oscillator source circuit of the utility model can generate the clock signal and local oscillation signal of multichannel high stable, meet the performance requirement of frequency synthesizer.
Description
Technical field
The utility model belongs to radar communication field, and it is high steady in particular relate to a kind of X-band scene surveillance radar multichannel
Determine local oscillator source circuit.
Background technique
Frequency synthesizer is one of the key device that radar and communication system realize high performance index.Frequency synthesizer includes
Direct-type frequency synthesis, the frequency synthesis of locking phase (indirect) formula, direct digital signal synthesizing and four kinds of hybrid frequency synthesis.With thunder
Up to the continuous development of the fields technologies such as communication, requirements at the higher level are proposed to the comprehensive performance of frequency synthesizer, high stable, multichannel are defeated
Become the important trend of frequency synthesizer out.
Utility model content
According to problems of the prior art, it is high that the utility model provides a kind of X-band scene surveillance radar multichannel
Stablize local oscillator source circuit, the clock signal and local oscillation signal of multichannel high stable can be generated, meet the property of frequency synthesizer
It can require.
The utility model uses following technical scheme:
A kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit, including four road power splitters, four road function point
The external reference clock input of the input terminal of device, four road power splitter Zhong, tri- road output end connects local oscillation signal generation circuit, another
Road output end connects clock signal generating circuit；The local oscillation signal generation circuit includes that a local oscillator output circuit and two local oscillators are defeated
Circuit out, a local oscillator output circuit are connect with three road output end two-way output end therein, two local oscillator output circuits and institute
State the another output end connection in three road output ends.
Preferably, the local oscillator output circuit includes five frequency divider, phase lock dielectric oscillator, and five frequency divider and locking phase are situated between
The input terminal of matter oscillator respectively connects the output end all the way of four road power splitters；The output end of five frequency divider connects amplifilter I
Input terminal, the input terminal of the output end connection phaselocked loop I of amplifilter I, the input terminal of phaselocked loop I and digital circuit connect
It connects, the input terminal of the output end connection frequency mixer of phase lock dielectric oscillator, the input of the output end connection frequency mixer of phaselocked loop I
End, the output end connection filtering function of frequency mixer divide the input terminal of amplifier, and filtering function divides the output end of amplifier to be 2 tunnel, one local oscillator
Output end.
It is further preferred that the two local oscillators output circuit includes phaselocked loop II and function divides amplifier I, phaselocked loop II it is defeated
Enter the output end all the way of four road power splitters of end connection, the output end connection function of phaselocked loop II divides the input terminal of amplifier I, and function point is put
The output end of big device I is 2 tunnel, two local oscillator output end.
Still more preferably, the clock signal generating circuit includes amplifilter II, the amplifilter II
Output end connection function divide the input terminal of amplifier II, function divides the output end of amplifier II to be separately connected filter amplifier and five points
The input terminal of frequency amplifilter, the input terminal of the output end connection amplifilter III of five frequency dividing amplifilters；The filter
The output end of twt amplifier is 1 road 400M output end, and the output end of amplifilter III is 1 road 160M output end, and five frequency dividings are put
The output end of big filter is 1 road 80M output end.
Still more preferably, the phaselocked loop I includes phase discriminator I and voltage controlled oscillator I；The input of the phase discriminator I
The output end of end connection amplifilter I, the input terminal of the output end connection voltage controlled oscillator I of phase discriminator I, voltage controlled oscillator I
Output end connect frequency mixer；The input terminal of the output end connection phase discriminator I of the digital circuit.
Still more preferably, the phaselocked loop II includes phase discriminator II and voltage controlled oscillator II；The phase discriminator II
Input terminal connects the output end of four road power splitters, the input terminal of the output end connection voltage controlled oscillator II of phase discriminator II, voltage-controlled vibration
The output end connection function for swinging device II divides the input terminal of amplifier I.
Still more preferably, the phase discriminator I, phase discriminator II are all made of the HMC440QS16GE type of HITTITE company
Number；The voltage controlled oscillator I, voltage controlled oscillator II are all made of the JTOS-1300 model of Mini-Circuits company；Described five
Frequency divider uses the HMC438MS8G model of HITTITE company；The digital circuit is using AELTERA company
EP1C3T100I7 model.
The utility model has the beneficial effects that:
1) the local oscillator source circuit of the utility model adds the mode of frequency mixer by using phase discriminator, optimizes phase noise；
The isolation between each road is improved by increasing amplifier, and then improves the comprehensive performance of local oscillator source circuit, meets frequency
The performance requirement of rate synthesizer.
2) phase discriminator I of the utility model, phase discriminator II are all made of the HMC440QS16GE type of HITTITE company
Number, so that the better performances of mutually making an uproar of local oscillator source circuit.
Detailed description of the invention
Fig. 1 is the circuit diagram of the local oscillator source circuit of the utility model.
Fig. 2, Fig. 3 are respectively the circuit composition schematic diagram of phaselocked loop I, phaselocked loop II.
Appended drawing reference: tetra- road power splitter of 1-, 2- local oscillation signal generation circuit, 3- clock signal generating circuit, mono- local oscillator of 4-
Output circuit, bis- local oscillator output circuit of 5-, 31- amplifilter II, 32- function divide amplifier II, 33- filter amplifier, 34- five
Divide amplifilter, 35- amplifilter III, 41- five frequency divider, 42- amplifilter I, 43- phaselocked loop I, 44- number
Circuit, 45- phase lock dielectric oscillator, 46- frequency mixer, 47- filtering function divide amplifier, 51- phaselocked loop II, and 52- function divides amplifier
I, 431- phase discriminator I, 432- voltage controlled oscillator I, 511- phase discriminator II, 512- voltage controlled oscillator II.
Specific embodiment
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
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit, including four road power splitters 1,
The external reference clock input of the input terminal of four road power splitter 1, four road power splitters, 1 Zhong, tri- road output end connect local oscillation signal
Generation circuit 2, another output end connect clock signal generating circuit 3；The local oscillation signal generation circuit 2 includes that a local oscillator is defeated
Circuit 4 and two local oscillator output circuits 5, a local oscillator output circuit 4 are connect with three road output end two-way output end therein out,
Two local oscillator output circuits 5 are connect with the another output end in the output end of three road.
The one local oscillator output circuit 4 includes five frequency divider 41, phase lock dielectric oscillator 45, and five frequency divider 41 and locking phase are situated between
The input terminal of matter oscillator 45 respectively connects the output end all the way of four road power splitters 1；The output end connection amplification filter of five frequency divider 41
The input terminal of wave device I 42, the input terminal of the output end connection phaselocked loop I 43 of amplifilter I 42, the input terminal of phaselocked loop I 43
It is connect with digital circuit 44, the input terminal of the output end connection frequency mixer 46 of phase lock dielectric oscillator 45, the output of phaselocked loop I 43
The input terminal of end connection frequency mixer 46, the output end connection filtering function of frequency mixer 46 divide the input terminal of amplifier 47, filtering function point
The output end of amplifier 47 is 2 tunnel, one local oscillator output end.
The two local oscillators output circuit 5 includes phaselocked loop II 51 and function divides amplifier I 52, and the input terminal of phaselocked loop II 51 connects
The output end all the way of four road power splitters 1 is connect, the output end connection function of phaselocked loop II 51 divides the input terminal of amplifier I 52, and function point is put
The output end of big device I 52 is 2 tunnel, two local oscillator output end.
The clock signal generating circuit 3 includes amplifilter II 31, and the output end of the amplifilter II 31 connects
Connect the input terminal that function divides amplifier II 32, function divides that the output end of amplifier II 32 is separately connected filter amplifier 33 and five frequency dividings are put
The input terminal of big filter 34, the input terminal of the output end connection amplifilter III 35 of five frequency dividing amplifilters 34；It is described
The output end of filter amplifier 33 is 1 road 400M output end, and the output end of amplifilter III 35 is 1 road 160M output end, five
The output end for dividing amplifilter 34 is 1 road 80M output end.
As shown in Fig. 2, the phaselocked loop I 43 includes phase discriminator I 431 and voltage controlled oscillator I 432；The phase discriminator I 431
Input terminal connection amplifilter I 42 output end, phase discriminator I 431 output end connection voltage controlled oscillator I 432 input
The output end at end, voltage controlled oscillator I 432 connects frequency mixer 46；The output end connection phase discriminator I 431 of the digital circuit 44
Input terminal.
As shown in figure 3, the phaselocked loop II 51 includes phase discriminator II 511 and voltage controlled oscillator II 512；The phase discriminator II
511 input terminal connects the output end of four road power splitters 1, and the output end of phase discriminator II 511 connects the defeated of voltage controlled oscillator II 512
Enter end, the output end connection function of voltage controlled oscillator II 512 divides the input terminal of amplifier I 52.
The phase discriminator I 431, phase discriminator II 511 are all made of the HMC440QS16GE model of HITTITE company；The pressure
Control oscillator I 432, voltage controlled oscillator II 512 are all made of the JTOS-1300 model of Mini-Circuits company；Five frequency dividing
Device 41 uses the HMC438MS8G model of HITTITE company；The digital circuit 44 is using AELTERA company
EP1C3T100I7 model.
When the utility model is used, can with software in the prior art cooperate carry out using.Below with reference to existing
The working principle of the utility model is described in software in technology, it must be noted that: 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 and Figure 2, a local oscillation signal is generated by way of locking additive mixing, and 100MHz crystal oscillation signal is logical
The HMC438MS8G for crossing five frequency divider 41 generates 20MHz signal, takes second harmonic 40MHz signal to make by amplifilter I 42
For the reference signal of phaselocked loop I 43；Normal voltage is generated by the HMC440QS16GE of phase discriminator I 431 and passes through voltage controlled oscillator I
432 JTOS-1300 generates 800~1240MHz signal, then and by the 7GHz signal that phase lock dielectric oscillator 45 generates carries out
After mixing, divides amplifier 47 to export by filtering function, generate a local oscillation signal of 2 7.8~8.24GHz of tunnel.
As shown in Figure 1, Figure 3, the signal that the HMC438MS8G of five frequency divider 41 is generated is believed as the input of phaselocked loop II 51
Number；The voltage generated by the HMC440QS16GE of phase discriminator II 511 is generated by the JTOS-1300 of voltage controlled oscillator II 512
1.1GMHz signal divides amplifier I 52 to export, generates two local oscillation signals of 2 road 1.1GHz by function.
As shown in Figure 1, clock signal generating circuit 3 is sent into 100MHz reference clock by outside, by amplifilter II
31 take four-time harmonic to generate 400MHz signal, and 400MHz signal divides II 32 function of amplifier to divide two-way by function, and signal is direct all the way
Filtering output 400MHz clock signal, another way signal generate 80MHz clock signal by five frequency dividing amplifilters 34,
80MHz clock signal function divides two-way, wherein clock signal directly filters output 80MHz clock signal all the way, is left clock all the way
Signal exports 160MHz clock signal after the amplification of amplifilter III 35 takes second harmonic.
In conclusion the utility model provides a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit,
The clock signal and local oscillation signal that multichannel high stable can be generated, meet the performance requirement of frequency synthesizer.
Claims (7)
1. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit, it is characterised in that: including four road power splitters (1),
The external reference clock input of the input terminal of four road power splitter (1), four road power splitter (1) Zhong, tri- road output end connect local oscillator
Signal generating circuit (2), another output end connect clock signal generating circuit (3)；Local oscillation signal generation circuit (2) packet
A local oscillator output circuit (4) and two local oscillator output circuits (5) are included, a local oscillator output circuit (4) and three road output end are wherein
The connection of two-way output end, two local oscillator output circuits (5) connect with the another output end in the output end of three road.
2. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 1, feature exist
In: the local oscillator output circuit (4) include five frequency divider (41), phase lock dielectric oscillator (45), five frequency divider (41) and lock
The input terminal of phase medium oscillator (45) respectively connects the output end all the way of four road power splitters (1)；The output end of five frequency divider (41)
Connect the input terminal of amplifilter I (42), the input terminal of output end connection phaselocked loop I (43) of amplifilter I (42), lock
The input terminal of phase ring I (43) is connect with digital circuit (44), and the output end of phase lock dielectric oscillator (45) connects frequency mixer (46)
Input terminal, the input terminal of output end connection frequency mixer (46) of phaselocked loop I (43), the output end of frequency mixer (46) connects filtering
Function divides the input terminal of amplifier (47), and filtering function divides the output end of amplifier (47) to be 2 tunnel, one local oscillator output end.
3. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 2, feature exist
In: the two local oscillators output circuit (5) includes that phaselocked loop II (51) and function divide amplifier I (52), the input of phaselocked loop II (51)
The output end all the way of four road power splitters (1) of end connection, the output end connection function of phaselocked loop II (51) divide the input of amplifier I (52)
End, function divide the output end of amplifier I (52) to be 2 tunnel, two local oscillator output end.
4. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 3, feature exist
In: the clock signal generating circuit (3) includes amplifilter II (31), and the output end of the amplifilter II (31) connects
The input terminal that function divides amplifier II (32) is connect, function divides the output end of amplifier II (32) to be separately connected filter amplifier (33) and five
The input terminal of amplifilter (34) is divided, output end connection amplifilter III (35) of five frequency dividings amplifilter (34)
Input terminal；The output end of the filter amplifier (33) is 1 road 400M output end, and the output end of amplifilter III (35) is 1
Road 160M output end, the output end of five frequency dividings amplifilter (34) are 1 road 80M output end.
5. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 3, feature exist
In: the phaselocked loop I (43) includes phase discriminator I (431) and voltage controlled oscillator I (432)；The input terminal of the phase discriminator I (431)
The output end of amplifilter I (42) is connected, the output end of phase discriminator I (431) connects the input terminal of voltage controlled oscillator I (432),
The output end of voltage controlled oscillator I (432) connects frequency mixer (46)；The output end of the digital circuit (44) connects phase discriminator I
(431) input terminal.
6. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 5, feature exist
In: the phaselocked loop II (51) includes phase discriminator II (511) and voltage controlled oscillator II (512)；The phase discriminator II (511) it is defeated
Enter the output end of four road power splitters (1) of end connection, the output end of phase discriminator II (511) connects the defeated of voltage controlled oscillator II (512)
Enter end, the output end connection function of voltage controlled oscillator II (512) divides the input terminal of amplifier I (52).
7. a kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit according to claim 6, feature exist
In: the phase discriminator I (431), phase discriminator II (511) are all made of the HMC440QS16GE model of HITTITE company；It is described voltage-controlled
Oscillator I (432), voltage controlled oscillator II (512) are all made of the JTOS-1300 model of Mini-Circuits company；Described five points
Frequency device (41) uses the HMC438MS8G model of HITTITE company；The digital circuit (44) is using AELTERA company
EP1C3T100I7 model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820850258.4U CN208316703U (en) | 2018-05-31 | 2018-05-31 | A kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit |
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| CN201820850258.4U CN208316703U (en) | 2018-05-31 | 2018-05-31 | A kind of X-band scene surveillance radar multichannel high stable local oscillator source circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510140A (en) * | 2020-04-29 | 2020-08-07 | 北京航天广通科技有限公司分公司 | Clock local oscillator assembly |
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2018
- 2018-05-31 CN CN201820850258.4U patent/CN208316703U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510140A (en) * | 2020-04-29 | 2020-08-07 | 北京航天广通科技有限公司分公司 | Clock local oscillator assembly |
| CN111510140B (en) * | 2020-04-29 | 2023-09-22 | 北京航天广通科技有限公司分公司 | Clock local oscillator assembly |
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