CN207369017U - A kind of clock distribution circuit - Google Patents
A kind of clock distribution circuit Download PDFInfo
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- CN207369017U CN207369017U CN201721705653.5U CN201721705653U CN207369017U CN 207369017 U CN207369017 U CN 207369017U CN 201721705653 U CN201721705653 U CN 201721705653U CN 207369017 U CN207369017 U CN 207369017U
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- inductance
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Abstract
Electronic measuring instrument field is the utility model is related to, 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；Further 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 utility model, using digital stepping controlled attenuator, and passes through specific signal processing flow so that circuit work is more stablized, while exports the radiofrequency signal in target zone.
Description
Technical field
Electronic measuring instrument field is the utility model is related to, more particularly to a kind of clock distribution circuit.
Background technology
In radiofrequency signal field, electronic gauge is essential test equipment, and the signal source in electronic gauge
The even more core devices of electronic gauge, it is mainly responsible for generation 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 the signal of qualification.
Utility model content
The purpose of this utility model is that needing the technical need of stable clock distribution circuit in face of good signal source, carry
For a kind of clock distribution circuit for electronic gauge signal source.
In order to realize above-mentioned purpose of utility model, the utility model 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 capacitance, the first electricity by concatenation
Resistance, second resistance are exported to the first amplifier, and, exported by the first capacitance, first resistor, 3rd resistor to the 4th filtering
Amplifying circuit；
First amplifier exports signal to power splitter by the second filter circuit, and signal is divided into by the power splitter
Exported behind four tunnels, wherein the 4th tunnel output signal is exported by the 3rd filter circuit；The output terminal of first amplifier is also logical
The first filter circuit is crossed to be connected with power supply；
4th filter amplification circuit is by the 6th filter circuit by signal output；4th filter amplification circuit
Output terminal is also connected by the 5th filter circuit with power supply.
Further, first filter circuit include sequentially connected 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 is also connect by the second capacitance
Ground；One end of first inductance and the 9th inductance connection passes through the 3rd capacity earth.
Further, second filter circuit include sequentially connected 5th capacitance, the 3rd inductance, the 4th inductance and
6th capacitance；The free end of 5th capacitance is connected with the output terminal of first amplifier；5th capacitance 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 capacitance
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 capacitance, and the first π shapes electricity with the tenth capacitance series
Road；The first π shapes circuit is made 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 capacitance, the 2nd π shapes circuit, the
12 capacitances and the second amplifier；
The 2nd π shapes circuit is made of the 9th resistance, the tenth resistance and the 11st resistance for forming π shapes.
Further, the 5th filter circuit include sequentially connected 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 is also connect by the 13rd capacitance
Ground；One end of 5th inductance and the tenth inductance connection passes through the 14th capacity earth.
Further, the 6th filter circuit includes sequentially connected 15th capacitance, the 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
One end of eight inductance connections passes through the 17th capacitance connection；8th inductance passes through with one end that the 3rd π shape circuits are connected
18 capacity earths；Meanwhile the both ends of the 7th inductance pass through the 19th capacitance connection；The both ends of 8th inductance pass through second
Ten capacitance connections；
The 3rd π shapes circuit is made of the 14th resistance, the 15th resistance and the 16th resistance for forming π shapes.
Compared with prior art, the beneficial effects of the utility model：The utility model provides one kind and is used for electronic gauge
The clock distribution circuit of signal source, using digital stepping controlled attenuator, and passes through specific signal processing flow so that circuit work
Make more to stablize, while export the radiofrequency signal in target zone.
Brief description of the drawings：
Fig. 1 is the functional block diagram of the utility model.
Fig. 2 is constant-temperature crystal oscillator circuit diagram in the utility model.
Fig. 3 is that the circuit of the first amplifier in the utility model, the first filter circuit, the second filter circuit and power splitter connects
Map interlinking.
Fig. 4 is the circuit diagram of the 3rd filter circuit in the utility model.
Fig. 5 is the 4th filter amplification circuit, the circuit connection diagram of the 5th filter circuit in the utility model.
Fig. 6 is the circuit diagram of the 6th filter circuit in the utility model.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail the utility model.But this should not be understood
Following embodiment, all technologies realized based on the utility model content are only limitted to for the scope of the above-mentioned theme of the utility model
Belong to the scope of the utility model.
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 capacitance C215 by concatenation, the
One resistance R91, second resistance R89 are exported to the first amplifier 2 (N13 in Fig. 3), and, by the first capacitance C215, the first electricity
Resistance 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 terminal 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；The free end of first inductance L8 and power supply
Connection, while the free end of the first inductance L8 is also grounded by the second capacitance C117；First inductance L8 is connected with the 9th inductance L9
One end be grounded by the 3rd capacitance C119.
Second filter circuit 4 includes sequentially connected 5th capacitance C141, the 3rd inductance L52, the 4th inductance L53 and the
Six capacitance C213；The free end of the 5th capacitance C141 is connected with the output terminal 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 capacitance C222；3rd inductance L52 and the 4th inductance L53
One end of connection is also grounded by the 8th capacitance C223；One end that 4th inductance L53 is connected with the 6th capacitance C213 also passes through
Nine capacitance C224 are grounded.In the present embodiment, the first amplifier N13 uses ERA-4SM；3rd filter circuit includes the tenth capacitance
C221, and the first π shape circuits concatenated with the tenth capacitance 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 terminal is also connected by the 5th filter circuit 8 with power supply.It includes the 11st capacitance C107, the 2nd π shapes electricity being sequentially connected in series
Road, the 12nd capacitance 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 sequentially connected 5th inductance L57, the tenth inductance L80, the 13rd resistance R79 and
6th inductance L19；The free end of 5th inductance L57 is connected with power supply, while the free end of the 5th inductance L57 also passes through the 13rd
Capacitance C83 is grounded；5th inductance L57 is grounded with the tenth inductance L80 one end being connected by the 14th capacitance C108.
6th filter circuit 9 includes sequentially connected 15th capacitance C153, the 7th inductance L34, the 8th inductance L35 and the
Three π shape circuits；7th inductance L34 is grounded with the 15th capacitance C153 one end being connected by the 16th capacitance C334；Described
Seven inductance L34 pass through the 17th capacitance 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 capacitance C335；Meanwhile the 7th the both ends of inductance L34 pass through the 19th capacitance
C332 connections；The both ends of 8th inductance L35 pass through the 20th capacitance 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 capacitance, first resistor by concatenation, the Two resistance are exported to the first amplifier, and, exported by the first capacitance, 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 exported by the 3rd filter circuit；The output terminal 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 sequentially connected first electricity 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 sequentially connected 5th electricity Appearance, the 3rd inductance, the 4th inductance and the 6th capacitance；The free end of 5th capacitance and the output terminal of first amplifier Connection；One end of 5th capacitance 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 capacitance, 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 capacitance, the 2nd π shapes circuit, the 12nd capacitance and the second amplifier；The 2nd π shapes circuit is made 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 sequentially connected 5th electricity 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 sequentially connected 15th capacitance, 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 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 |
|---|---|---|---|
| CN201721705653.5U CN207369017U (en) | 2017-12-08 | 2017-12-08 | A kind of clock distribution circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721705653.5U CN207369017U (en) | 2017-12-08 | 2017-12-08 | A kind of clock distribution circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207369017U true CN207369017U (en) | 2018-05-15 |
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ID=62344141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721705653.5U Active CN207369017U (en) | 2017-12-08 | 2017-12-08 | A kind of clock distribution circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207369017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769773A (en) * | 2017-12-08 | 2018-03-06 | 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 CN201721705653.5U patent/CN207369017U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769773A (en) * | 2017-12-08 | 2018-03-06 | 成都前锋电子仪器有限责任公司 | A kind of clock distribution circuit |
| CN107769773B (en) * | 2017-12-08 | 2024-01-30 | 成都前锋电子仪器有限责任公司 | Clock distribution circuit |
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