CN109004933A - A kind of broadband frequency source - Google Patents
A kind of broadband frequency source Download PDFInfo
- Publication number
- CN109004933A CN109004933A CN201810819326.5A CN201810819326A CN109004933A CN 109004933 A CN109004933 A CN 109004933A CN 201810819326 A CN201810819326 A CN 201810819326A CN 109004933 A CN109004933 A CN 109004933A
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- signal
- circuit
- frequency source
- local oscillation
- phase
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- 230000010355 oscillation Effects 0.000 claims abstract description 36
- 230000005611 electricity Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
A kind of broadband frequency source is provided in the embodiment of the present application, which includes: power splitter, and the reference signal of input is divided into the first signal and the second signal；The reference signal of input is divided into the first signal and the second signal by power splitter；Power-devided circuit is cascaded, for carrying out constant amplitude distribution to the first signal, obtains multichannel constant-amplitude signal；Phase-locked loop circuit obtains the output signal of PGC demodulation, and using second signal as the second reference signal using multichannel constant-amplitude signal as the first reference signal based on control instruction, obtains third local oscillation signal；Wideband switch is based on control instruction, selects the output frequency of local oscillation signal, and export the first local oscillation signal and the second local oscillation signal.Herein described technical solution overcomes the design difficulties such as the easy crosstalk of broadband frequency source, phase noise be big, be capable of providing broadband, more local oscillators, high-isolation, low phase noise local oscillation signal.
Description
Technical field
This application involves microwave and radio circuit field, in particular to a kind of broadband frequency source.
Background technique
Current microwave and radio frequency system, either radar or the communications field, the most widely used is superhet knot
Structure.Either launch channel still receives channel, requires the local oscillation signal of different frequency for being mixed, these are generally integrated in
Same frequency source component provides.Meanwhile to meet system to the requirements at the higher level of the parameters such as signal-to-noise ratio, dynamic range, frequency
Source component suffers from strict requirements to the parameters such as the power of local oscillation signal, phase noise, spuious, frequency accuracy.With skill
The development of art and continuous innovation, frequency source technology propose the requirement of higher frequency, more high bandwidth, more Low phase noise.However, at present
Existing frequency source is unable to satisfy the requirement of the signals such as broadband, more local oscillators output.
Summary of the invention
One of in order to solve the above problem, this application provides a kind of broadband frequency sources.
According to the first aspect of the embodiment of the present application, provide
The reference signal of input is divided into the first signal and the second signal by power splitter；
Power-devided circuit is cascaded, for carrying out constant amplitude distribution to the first signal, obtains multichannel constant-amplitude signal；
Phase-locked loop circuit obtains PGC demodulation using multichannel constant-amplitude signal as the first reference signal based on control instruction
Output signal, and using second signal as the second reference signal, obtain third local oscillation signal；
Wideband switch is based on control instruction, selects the output frequency of local oscillation signal, and export the first local oscillation signal and second
Local oscillation signal.
Herein described technical solution is not only able to generate the broadband local oscillator signal of multiple and different frequencies as needed, and
It can guarantee lower phase noise, to meet the use demand of application environment.
Herein described technical solution can guarantee that the high-isolation between each circuit prevents the cross-interference issue of wideband frequency.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 shows the schematic diagram of herein described broadband frequency source.
Specific embodiment
In order to which technical solution in the embodiment of the present application and advantage is more clearly understood, below in conjunction with attached drawing to the application
Exemplary embodiment be described in more detail, it is clear that described embodiment be only the application a part implement
Example, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can be combined with each other.
The core ideas of this programme is the signal for generating out of phase using multiple phaselocked loops according to demand, is opened by broadband
The selection of pass exports the local oscillation signal met the requirements；Meanwhile box body being isolated by partition wall, each circuit is placed respectively,
To avoid the crosstalk of wideband frequency.
Embodiment one
As shown in Figure 1, present embodiments providing a kind of broadband frequency source, comprising: power splitter, wideband switch, amplifying circuit,
Phase-locked loop circuit, cascade power-devided circuit and voltage-stabilized power supply circuit.Wherein, wideband switch is used to control output local oscillation signal frequency
Selection, i.e., realization X-band and Ku wave band in six select one local oscillator export and C-band and X-band in alternative local oscillation signal
Output；Amplifying circuit is made of at least one amplifier, is capable of providing enough power output cascade power-devided circuits；Cascade function
The amplified reference signal constant amplitude of amplifying circuit is distributed to each phase-locked loop circuit by parallel circuit, the reference letter as locking phase
Number；Voltage-stabilized power supply circuit provides required low ripple supply voltage for amplifier and phaselocked loop.
When the broadband frequency source works, the reference signal of input is divided into the first signal and the second signal using power splitter；
Second signal is directly entered in the phaselocked loop 9 in phase-locked loop circuit, and phaselocked loop 9 is defeated using second signal as the second reference signal
Third local oscillation signal out；First signal enters amplifying circuit, using amplifying circuit by the power amplification of the first signal to cascading function
Cascade power-devided circuit is given in output after power needed for parallel circuit；It cascades power-devided circuit and constant amplitude is carried out to the reference signal after improving power
Distribution obtains eight road constant-amplitude signals, and exports give each phaselocked loop (phaselocked loop 1 to 8) respectively；Each phaselocked loop (phaselocked loop 1 to
8) according to different control signals, using eight road constant-amplitude signals as the second reference signal, the locking of eight tunnel phase and frequency is obtained
Signal；Wideband switch is based on control instruction, selects one local oscillator to export in X-band and Ku wave band six, and with C-band and X-band
The local oscillation signal of interior alternative exports, and selects the output frequency of local oscillation signal；Finally export the first of fixed frequency and phase
Shake signal and the second local oscillation signal.During the work time, voltage-stabilized power supply circuit is continuously amplifying circuit and phase-locked loop circuit provides
Low ripple supply voltage.In the present embodiment, since the power of the first local oscillation signal and the second local oscillation signal is greater than third local oscillator
Signal, therefore, it is necessary to amplify the first signal to be supplied to phaselocked loop 1 to 8 after constant amplitude distribution, to improve final first
The output power of local oscillation signal and the second local oscillation signal thus can export a variety of different frequencies and phase by a frequency source
The local oscillation signal of position.
The broadband frequency source, which is placed in a box body, forms wideband frequency source component, wherein the amplifying circuit and locking phase
The same face of box body is arranged in loop circuit, and the another side of box body is arranged in voltage-stabilized power supply circuit, and the circuit on two sides passes through insulator
It is attached.The wideband switch is connect with phase-locked loop circuit.The connector being arranged on box body connects needed for capable of providing for component
It connects and is supported with part-structure.
It is that each phaselocked loop (phaselocked loop 1 to 9) provides single electricity by low noise voltage-stabilized power supply circuit in the present embodiment
Source ensure that output local oscillation frequency signal has good phase noise characteristic.It, can by placing partition wall on box body structure
Believe to physically completely isolated between high-frequency local oscillation signal path, and in high-frequency local oscillation signal path and adjacent high-frequency local oscillation
Physically completely isolated between number access, to be able to achieve good clutter reduction.The signal path being arranged on box body, energy
Between enough circuits and with external signal transmission and.
In the present embodiment, the phaselocked loop device in the phase-locked loop circuit uses identical outline packages structure.The lock
Phase loop circuit uses identical printed board and peripheral circuit device, wherein the shape of printed board is rectangular.
In the present embodiment, the connection of signal is using exhausted between the voltage-stabilized power supply circuit and amplifying circuit, phase-locked loop circuit
The connection of edge sintering structure.Use SMP to slotting between phaselocked loop (phaselocked loop 1 to 8) in the wideband switch and phase-locked loop circuit
The mode of connection, both ends are transferred among slotting SMP connector with the connector of corresponding K-K form, and what it is close to wideband switch module is half
The SMP connector of escapement, another side close to phase-locked loop circuit be no escapement SMP connector.
In the present embodiment, input/output signal connector uses sub-miniature A connector, SSMA connector or K connector, and power supply, control connect
Device is connect using J30J type plug-in unit.
Embodiment two
A kind of broadband frequency source is provided in the present embodiment, it should be by wideband switch, amplifying circuit, phase-locked loop circuit, cascade
Power-devided circuit, voltage-stabilized power supply circuit, box body and connector composition.
By ready circuit printing plate and box body；All devices are welded on by corresponding printed board using reflow soldering process
On；Corresponding insulator and connector are sintered on box body；Each printed board is mounted on box body later, then solid with screw
Surely it tightens；The lead of connector and insulator pad solder corresponding with printed board are connected later；Finally cover tightly the box of box body
Lid, screws down fixation.
In the present embodiment, the box body structure is aluminum metallic material, and the box body fixed screw is M2 type.
In the present embodiment, the printed board of the cascade power-devided circuit and voltage-stabilized power supply circuit is six layers of mixed-compression board, remaining electricity
The printed board on road is four floor mixed-compression board.
The local oscillation signal of required frequency is generated using above-mentioned wideband frequency source component.Phaselocked loop electricity in broadband frequency source
There are identical encapsulating structure, consistent output power and consistent reference input power in road, thus cascade function point electricity convenient to use
Road provides reference-input signal, matched with its simplify circuit design using consistent peripheral circuit.Specifically, with reference to letter
Number enter circuit after, first pass through a power splitter, obtain two paths of signals, all the way enter phaselocked loop 9 be used as the second reference signal.Separately
It is filtered all the way by amplification, then obtains the first reference signal of consistent power magnitude by cascade power splitter, it is another for supplying
The reference input of outer eight phaselocked loops (phaselocked loop 1 to 8).Amplifying circuit and each phase-locked loop circuit are separated by partition wall, it will
Power-devided circuit design is cascaded at the phase-locked loop circuit back side, while overleaf placing voltage-stabilized power supply circuit.Finally, phase-locked loop circuit
Output enters a kind of wideband switch, realize in X-band and Ku wave band six select one local oscillator export and C-band and X-band in two
Select one output.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of broadband frequency source characterized by comprising
The reference signal of input is divided into the first signal and the second signal by power splitter；
Power-devided circuit is cascaded, for carrying out constant amplitude distribution to the first signal, obtains multichannel constant-amplitude signal；
Phase-locked loop circuit obtains the output of PGC demodulation using multichannel constant-amplitude signal as the first reference signal based on control instruction
Signal, and using second signal as the second reference signal, obtain third local oscillation signal；
Wideband switch is based on control instruction, selects the output frequency of local oscillation signal, and export the first local oscillation signal and the second local oscillator
Signal.
2. broadband frequency source according to claim 1, which is characterized in that the broadband frequency source further include: amplifying circuit,
For power needed for the power amplification of reference signal is extremely cascaded power-devided circuit.
3. broadband frequency source according to claim 1 or 2, which is characterized in that the broadband frequency source further include: pressure stabilizing electricity
Source circuit, for providing low-ripple voltage for amplifying circuit and phase-locked loop circuit.
4. broadband frequency source according to claim 1, which is characterized in that the wideband switch is with X-band and Ku wave band
Interior six select one local oscillation signal to export and in the form of the local oscillation signal output of alternative in C-band and X-band, export first
Shake signal and the second local oscillation signal.
5. broadband frequency source according to claim 1, which is characterized in that the phase-locked loop circuit includes: multiple phaselocked loops
And its matched peripheral circuit；Wherein, a phaselocked loop in the phase-locked loop circuit and its matched peripheral circuit are based on the
Binary signal obtains third local oscillation signal；Other phaselocked loops and its matched peripheral circuit are based on the first signal, obtain the first local oscillator
Signal and the second local oscillation signal.
6. broadband frequency source according to claim 1, which is characterized in that the frequency source further include: box body；
The side of the box body is equipped at least one amplifying circuit and multiple phase-locked loop circuits；The upside of the box body is equipped with broadband
Switch；
Using the input terminal of the power splitter as the input terminal of reference signal, believed using the output end of the wideband switch as local oscillator
Number output end；
The amplifying circuit, cascade power-devided circuit, phase-locked loop circuit and wideband switch are sequentially connected electrically.
7. broadband frequency source according to claim 6, which is characterized in that the other side of the box body is equipped with regulated power supply electricity
Road；The voltage-stabilized power supply circuit is connect by insulator with the amplifier and phase-locked loop circuit.
8. broadband frequency source according to claim 6, which is characterized in that the wideband switch and phase-locked loop circuit use
SMP connector connects slotting mode.
9. broadband frequency source according to claim 6, which is characterized in that the box body be equipped with multiple partition walls, for pair
The intracorporal circuit of box is physically separated.
10. broadband frequency source according to claim 6, which is characterized in that the box body is equipped with power connector and control
Connector processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819326.5A CN109004933A (en) | 2018-07-24 | 2018-07-24 | A kind of broadband frequency source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819326.5A CN109004933A (en) | 2018-07-24 | 2018-07-24 | A kind of broadband frequency source |
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| Publication Number | Publication Date |
|---|---|
| CN109004933A true CN109004933A (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810819326.5A Pending CN109004933A (en) | 2018-07-24 | 2018-07-24 | A kind of broadband frequency source |
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| Country | Link |
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| CN (1) | CN109004933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552421A (en) * | 2021-09-23 | 2021-10-26 | 深圳飞骧科技股份有限公司 | Broadband dielectric constant measuring system and method based on pulse technology |
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| CN205232194U (en) * | 2015-12-24 | 2016-05-11 | 成都仁健微波技术有限公司 | Frequency source |
| CN205670764U (en) * | 2016-06-14 | 2016-11-02 | 南京国睿安泰信科技股份有限公司 | A kind of reference source system utilizing phase-locked loop pll and frequency multiplication |
| CN106849944A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业集团公司雷华电子技术研究所 | A kind of intermediate-freuqncy signal source module |
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2018
- 2018-07-24 CN CN201810819326.5A patent/CN109004933A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100156472A1 (en) * | 2008-12-22 | 2010-06-24 | Lockheed Martin Corporation | Transversal Agile Local Oscillator Synthesizer |
| CN102025422A (en) * | 2010-12-04 | 2011-04-20 | 电子科技大学 | Method and system for generating Ka band multi-path millimeter wave signals |
| CN102820510A (en) * | 2012-08-21 | 2012-12-12 | 北京琨奇电子***有限公司 | Active multi-path power splitter |
| CN104202045A (en) * | 2014-08-07 | 2014-12-10 | 南京誉葆科技有限公司 | Wideband self-checking signal source |
| CN204967794U (en) * | 2015-09-29 | 2016-01-13 | 安徽四创电子股份有限公司 | Hypophase make an uproar high X of isolation and general frequency synthesizer of KU wave band |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552421A (en) * | 2021-09-23 | 2021-10-26 | 深圳飞骧科技股份有限公司 | Broadband dielectric constant measuring system and method based on pulse technology |
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| WO2023045538A1 (en) * | 2021-09-23 | 2023-03-30 | 深圳飞骧科技股份有限公司 | Broadband dielectric constant measurement system and method based on pulse technology |
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