CN107769773A - A kind of clock distribution circuit - Google Patents
A kind of clock distribution circuit Download PDFInfo
- Publication number
- CN107769773A CN107769773A CN201711299364.4A CN201711299364A CN107769773A CN 107769773 A CN107769773 A CN 107769773A CN 201711299364 A CN201711299364 A CN 201711299364A CN 107769773 A CN107769773 A CN 107769773A
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- Prior art keywords
- inductance
- circuit
- resistance
- filter
- electric capacity
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- 230000003321 amplification Effects 0.000 claims abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 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
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The present invention relates to electronic measuring instrument field, more particularly to a kind of clock distribution circuit.Constant-temperature crystal oscillator including producing fundamental clock frequency, and first amplifier, first amplifier exports signal to power splitter by the second filter circuit, and the power splitter exports after signal is divided into four tunnels, wherein the 4th tunnel output signal is exported by the 3rd filter circuit；Also include the 4th filter amplification circuit, the 4th filter amplification circuit is by the 6th filter circuit by signal output；Clock distribution circuit provided by the invention, using digital stepping controlled attenuator, and pass through specific signal processing flow so that circuit work is more stable, while exports the radiofrequency signal in target zone.
Description
Technical field
The present invention relates to electronic measuring instrument field, more particularly to a kind of clock distribution circuit.
Background technology
In radiofrequency signal field, electronic gauge is essential tester, and the signal source in electronic gauge
The even more core devices of electronic gauge, it is mainly responsible for producing with specific frequency, the radio signal of amplitude, if letter
If number source is the core devices of electronic gauge, then clock distribution circuit is exactly the core circuit of signal source, clock distribution
The characteristic of circuit directly determines that can signal source produce qualified signal.
The content of the invention
It is an object of the invention to the technical need of stable clock distribution circuit is needed in face of good signal source, there is provided one
Clock distribution circuit of the kind for electronic gauge signal source.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of clock distribution circuit, including,
Constant-temperature crystal oscillator, for producing fundamental clock frequency according to control signal, the first electric capacity, first resistor by concatenation, the
Two resistance are exported to the first amplifier, and, exported by the first electric capacity, first resistor, 3rd resistor to the 4th filter and amplification
Circuit；
First amplifier exports signal to power splitter by the second filter circuit, and signal is divided into four tunnels by the power splitter
After export, wherein the 4th tunnel output signal is exported by the 3rd filter circuit；The output end of first amplifier also passes through
One filter circuit is connected with power supply；
4th filter amplification circuit is by the 6th filter circuit by signal output；The output of 4th filter amplification circuit
End is also connected by the 5th filter circuit with power supply.
Further, first filter circuit include be sequentially connected the first inductance, the 9th inductance, the 5th resistance and
Second inductance；
The free end of first inductance is connected with power supply, while the free end of the first inductance also passes through the second capacity earth；The
One end of one inductance and the 9th inductance connection passes through the 3rd capacity earth.
Further, second filter circuit include be sequentially connected the 5th electric capacity, the 3rd inductance, the 4th inductance and
6th electric capacity；The free end of 5th electric capacity is connected with the output end of first amplifier；5th electric capacity and the 3rd
One end of inductance connection also passes through the 7th capacity earth；3rd inductance and one end of the 4th inductance connection are also connect by the 8th electric capacity
Ground；One end of 4th inductance and the 6th capacitance connection also passes through the 9th capacity earth.
Further, the 3rd filter circuit includes the tenth electric capacity, and the first π shapes electricity with the tenth capacitance series
Road；The first π shapes circuit is made up of the 6th resistance, the 7th resistance and the 8th resistance for forming π shapes.
Further, the 4th filter amplification circuit includes being sequentially connected in series the 11st electric capacity, the 2nd π shapes circuit, the
12 electric capacity and the second amplifier；
The 2nd π shapes circuit is made up of the 9th resistance, the tenth resistance and the 11st resistance for forming π shapes.
Further, the 5th filter circuit include be sequentially connected the 5th inductance, the tenth inductance, the 13rd resistance with
And the 6th inductance；
The free end of 5th inductance is connected with power supply, while the free end of the 5th inductance also passes through the 13rd capacity earth；
One end of 5th inductance and the tenth inductance connection passes through the 14th capacity earth.
Further, the 6th filter circuit includes the 15th electric capacity, the 7th inductance, the 8th inductance and the 3rd being sequentially connected
π shape circuits；
One end of 7th inductance and the 15th capacitance connection passes through the 16th capacity earth；7th inductance and the 8th electricity
One end of sense connection passes through the 17th capacitance connection；One end that 8th inductance is connected with the 3rd π shape circuits is by the 18th
Capacity earth；Meanwhile the both ends of the 7th inductance pass through the 19th capacitance connection；The both ends of 8th inductance pass through the 20th electricity
Hold connection；
The 3rd π shapes circuit is made up of the 14th resistance, the 15th resistance and the 16th resistance for forming π shapes.
Compared with prior art, beneficial effects of the present invention：The present invention provides a kind of for electronic gauge signal source
Clock distribution circuit, using digital stepping controlled attenuator, and pass through specific signal processing flow so that circuit work is more steady
It is fixed, while export the radiofrequency signal in target zone.
Brief description of the drawings：
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is constant-temperature crystal oscillator circuit diagram in the present invention.
Fig. 3 is the circuit connection of the first amplifier in the present invention, the first filter circuit, the second filter circuit and power splitter
Figure.
Fig. 4 is the circuit diagram of the 3rd filter circuit in the present invention.
Fig. 5 is the 4th filter amplification circuit, the circuit connection diagram of the 5th filter circuit in the present invention.
Fig. 6 is the circuit diagram of the 6th filter circuit in the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.But this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, all to belong to the present invention based on the technology that present invention is realized
Scope.
Embodiment 1：As shown in Figures 1 to 6, the present embodiment provides a kind of clock distribution circuit, including,
Constant-temperature crystal oscillator 1, for producing fundamental clock frequency according to control signal, the first electric capacity C215, the first electricity by concatenation
Resistance R91, second resistance R89 are exported to the first amplifier 2 (N13 in Fig. 3), and, by the first electric capacity C215, first resistor
R91,3rd resistor R94 are exported to the 4th filter amplification circuit 7.
First amplifier 2 exports signal to power splitter 5 (N11 in Fig. 3), this implementation by the second filter circuit 4
In example, power splitter 5 exports after signal is divided into four tunnels, wherein the 4th tunnel output signal is exported by the 3rd filter circuit 6；It is described
The output end of first amplifier 2 is also connected by the first filter circuit 3 with+5Vam power supplys；First filter circuit 3 includes connecting successively
The first inductance L8, the 9th inductance L9, the 5th resistance R88 and the second inductance L10 connect；First inductance L8 free end and power supply
Connection, while the first inductance L8 free end is also grounded by the second electric capacity C117；First inductance L8 is connected with the 9th inductance L9
One end be grounded by the 3rd electric capacity C119.
Second filter circuit 4 includes the 5th electric capacity C141, the 3rd inductance L52, the 4th inductance L53 and the being sequentially connected
Six electric capacity C213；The free end of the 5th electric capacity C141 is connected with the output end of the first amplifier N13；5th electricity
Hold one end that C141 is connected with the 3rd inductance L52 to be also grounded by the 7th electric capacity C222；3rd inductance L52 and the 4th inductance L53
One end of connection is also grounded by the 8th electric capacity C223；One end that 4th inductance L53 is connected with the 6th electric capacity C213 also passes through
Nine electric capacity C224 are grounded.In the present embodiment, the first amplifier N13 uses ERA-4SM；3rd filter circuit includes the tenth electric capacity
C221, and the first π shape circuits concatenated with the tenth electric capacity C221；The first π shapes circuit is by forming the 6th resistance of π shapes
R90, the 7th resistance R92 and the 8th resistance R93 compositions.
4th filter amplification circuit 7 is by the 6th filter circuit 9 by signal output；4th filter amplification circuit 7
Output end is also connected by the 5th filter circuit 8 with power supply.It includes the 11st electric capacity C107, the 2nd π shapes electricity being sequentially connected in series
Road, the 12nd electric capacity C152 and the second amplifier N10；2nd π shapes circuit is by forming the 9th resistance R96, the tenth resistance of π shapes
R95 and the 11st resistance R107 compositions.
5th filter circuit 8 include be sequentially connected the 5th inductance L57, the tenth inductance L80, the 13rd resistance R79 and
6th inductance L19；5th inductance L57 free end is connected with power supply, while the 5th inductance L57 free end also passes through the 13rd
Electric capacity C83 is grounded；5th inductance L57 is grounded with the tenth inductance L80 one end being connected by the 14th electric capacity C108.
6th filter circuit 9 includes the 15th electric capacity C153, the 7th inductance L34, the 8th inductance L35 and the being sequentially connected
Three π shape circuits；7th inductance L34 is grounded with the 15th electric capacity C153 one end being connected by the 16th electric capacity C334；Described
Seven inductance L34 pass through the 17th electric capacity C336 connections with one end that the 8th inductance L35 is connected；The 8th inductance L35 and the 3rd π
One end of shape circuit connection is grounded by the 18th electric capacity C335；Meanwhile the 7th inductance L34 both ends pass through the 19th electric capacity
C332 connections；8th inductance L35 both ends pass through the 20th electric capacity C333 connections；3rd π shapes circuit is by forming the 14th of π shapes
Resistance R61, the 15th resistance R62 and the 16th resistance R63 compositions.
Claims (7)
- A kind of 1. clock distribution circuit, it is characterised in that including,Constant-temperature crystal oscillator, for producing fundamental clock frequency according to control signal, the first electric capacity, first resistor by concatenation, the Two resistance are exported to the first amplifier, and, exported by the first electric capacity, first resistor, 3rd resistor to the 4th filter and amplification Circuit；First amplifier exports signal to power splitter by the second filter circuit, and signal is divided into four tunnels by the power splitter After export, wherein the 4th tunnel output signal is exported by the 3rd filter circuit；The output end of first amplifier also passes through One filter circuit is connected with power supply；4th filter amplification circuit is by the 6th filter circuit by signal output；The output of 4th filter amplification circuit End is also connected by the 5th filter circuit with power supply.
- 2. circuit as claimed in claim 1, it is characterised in that first filter circuit includes the first electricity being sequentially connected Sense, the 9th inductance, the 5th resistance and the second inductance；The free end of first inductance is connected with power supply, while the free end of the first inductance also passes through the second capacity earth；The One end of one inductance and the 9th inductance connection passes through the 3rd capacity earth.
- 3. circuit as claimed in claim 1, it is characterised in that second filter circuit includes the 5th electricity being sequentially connected Appearance, the 3rd inductance, the 4th inductance and the 6th electric capacity；The free end of 5th electric capacity and the output end of first amplifier Connection；One end of 5th electric capacity and the 3rd inductance connection also passes through the 7th capacity earth；3rd inductance and the 4th inductance connect The one end connect also passes through the 8th capacity earth；One end of 4th inductance and the 6th capacitance connection also passes through the 9th capacity earth.
- 4. circuit as claimed in claim 1, it is characterised in that the 3rd filter circuit includes the tenth electric capacity, and with First π shape circuits of ten capacitance series；The first π shapes circuit is by forming the 6th resistance, the 7th resistance and the 8th resistance of π shapes Composition.
- 5. circuit as claimed in claim 1, it is characterised in that the 4th filter amplification circuit includes the tenth be sequentially connected in series One electric capacity, the 2nd π shapes circuit, the 12nd electric capacity and the second amplifier；The 2nd π shapes circuit is made up of the 9th resistance, the tenth resistance and the 11st resistance for forming π shapes.
- 6. circuit as claimed in claim 1, it is characterised in that the 5th filter circuit includes the 5th electricity being sequentially connected Sense, the tenth inductance, the 13rd resistance and the 6th inductance；The free end of 5th inductance is connected with power supply, while the free end of the 5th inductance also passes through the 13rd capacity earth； One end of 5th inductance and the tenth inductance connection passes through the 14th capacity earth.
- 7. circuit as claimed in claim 1, it is characterised in that the 6th filter circuit include be sequentially connected the 15th electric capacity, 7th inductance, the 8th inductance and the 3rd π shape circuits；One end of 7th inductance and the 15th capacitance connection passes through the 16th capacity earth；7th inductance and the 8th electricity One end of sense connection passes through the 17th capacitance connection；One end that 8th inductance is connected with the 3rd π shape circuits is by the 18th Capacity earth；Meanwhile the both ends of the 7th inductance pass through the 19th capacitance connection；The both ends of 8th inductance pass through the 20th electricity Hold connection；The 3rd π shapes circuit is made up of the 14th resistance, the 15th resistance and the 16th resistance for forming π shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299364.4A CN107769773B (en) | 2017-12-08 | 2017-12-08 | Clock distribution circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299364.4A CN107769773B (en) | 2017-12-08 | 2017-12-08 | Clock distribution circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107769773A true CN107769773A (en) | 2018-03-06 |
| CN107769773B CN107769773B (en) | 2024-01-30 |
Family
ID=61277816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711299364.4A Active CN107769773B (en) | 2017-12-08 | 2017-12-08 | Clock distribution circuit |
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| Country | Link |
|---|---|
| CN (1) | CN107769773B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391334A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Room temperature for radio integration test module calibrates circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980077382A (en) * | 1997-04-18 | 1998-11-16 | 김영환 | System Clock Generator of Electronic Switching System |
| US6538499B1 (en) * | 2002-01-09 | 2003-03-25 | Xilinx, Inc. | Low jitter transmitter architecture with post PLL filter |
| RU2233457C1 (en) * | 2003-03-31 | 2004-07-27 | Шишков Виктор Александрович | Wide-band scanning wide-band gating complex altimeter-goniometer |
| CN103888876A (en) * | 2014-03-31 | 2014-06-25 | 深圳市冠旭电子有限公司 | Earphone noise processing circuit and earphones |
| CN204741441U (en) * | 2015-06-09 | 2015-11-04 | 柳州师范高等专科学校 | A signal filtering circuit for unmanned aerial vehicle |
| CN206135884U (en) * | 2016-09-23 | 2017-04-26 | 安徽四创电子股份有限公司 | Filter module is divided to 60MHz switch merit |
| CN207369017U (en) * | 2017-12-08 | 2018-05-15 | 成都前锋电子仪器有限责任公司 | A kind of clock distribution circuit |
-
2017
- 2017-12-08 CN CN201711299364.4A patent/CN107769773B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980077382A (en) * | 1997-04-18 | 1998-11-16 | 김영환 | System Clock Generator of Electronic Switching System |
| US6538499B1 (en) * | 2002-01-09 | 2003-03-25 | Xilinx, Inc. | Low jitter transmitter architecture with post PLL filter |
| RU2233457C1 (en) * | 2003-03-31 | 2004-07-27 | Шишков Виктор Александрович | Wide-band scanning wide-band gating complex altimeter-goniometer |
| CN103888876A (en) * | 2014-03-31 | 2014-06-25 | 深圳市冠旭电子有限公司 | Earphone noise processing circuit and earphones |
| CN204741441U (en) * | 2015-06-09 | 2015-11-04 | 柳州师范高等专科学校 | A signal filtering circuit for unmanned aerial vehicle |
| CN206135884U (en) * | 2016-09-23 | 2017-04-26 | 安徽四创电子股份有限公司 | Filter module is divided to 60MHz switch merit |
| CN207369017U (en) * | 2017-12-08 | 2018-05-15 | 成都前锋电子仪器有限责任公司 | A kind of clock distribution circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391334A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Room temperature for radio integration test module calibrates circuit |
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| Publication number | Publication date |
|---|---|
| CN107769773B (en) | 2024-01-30 |
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