CN203968069U - The VHF frequency band signals amplifying circuit of a kind of pair of filtering - Google Patents
The VHF frequency band signals amplifying circuit of a kind of pair of filtering Download PDFInfo
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- CN203968069U CN203968069U CN201420241640.7U CN201420241640U CN203968069U CN 203968069 U CN203968069 U CN 203968069U CN 201420241640 U CN201420241640 U CN 201420241640U CN 203968069 U CN203968069 U CN 203968069U
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- capacitor
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- inductance
- power amplifier
- vhf
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Abstract
The utility model provides the VHF frequency band signals amplifying circuit of a kind of pair of filtering, comprise power amplifier T1, the input of power amplifier T1 is connected with VHF input signal, the output of power amplifier T1 is connected with one end of capacitor C 1, one end of the other end of capacitor C 1 and resistance R 1, one end of resistance R 2 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with one end of resistance R 4 with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 3 with one end of inductance L 2, the other end of inductance L 3 is connected with one end of capacitor C 4, the other end of capacitor C 4 is connected with the input of power amplifier T2, the utility model circuit is simple, can realize VHF signal is amplified and filter effect preferably.
Description
Technical field
The utility model relates to the VHF frequency band signals amplifying circuit of a kind of pair of filtering.
Background technology
Existing VHF frequency band signals is amplified is all to use chip to realize, and high cost, be not so high field to VHF signal quality demand especially, needs a kind of frequency band signals of VHF cheaply amplifying circuit.
Summary of the invention
The technical problems to be solved in the utility model, being to provide needs a kind of frequency band signals of VHF cheaply amplifying circuit, solves the problem that existing VHF frequency band signals amplifies electric high cost.
The utility model is achieved in that
The VHF frequency band signals amplifying circuit of a kind of pair of filtering, it is characterized in that: comprise power amplifier T1, the input of power amplifier T1 is connected with VHF input signal, the output of power amplifier T1 is connected with one end of capacitor C 1, one end of the other end of capacitor C 1 and resistance R 1, one end of resistance R 2 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with one end of resistance R 4 with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 3 with one end of inductance L 2, the other end of inductance L 3 is connected with one end of capacitor C 4, the other end of capacitor C 4 is connected with the input of power amplifier T2, the output of power amplifier T2 is connected with VHF output signal, the other end of resistance R 1 is connected with one end of capacitor C 5 with one end of resistance R 3, the other end of resistance R 3 is connected with one end of capacitor C 2 with the emitter of triode Q1, the other end of inductance L 2 is connected with one end of capacitor C 3 with one end of resistance R 5, the other end of resistance R 4, the other end of resistance R 2, the other end of capacitor C 2, the other end of resistance R 5, the other end ground connection of capacitor C 3 and capacitor C 5.
The utility model has the advantage of: the utility model is simple in structure, realize easy cost low, effective.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Refer to shown in Fig. 1, the VHF frequency band signals amplifying circuit of a kind of pair of filtering, comprise power amplifier T1, the input of power amplifier T1 is connected with VHF input signal, the output of power amplifier T1 is connected with one end of capacitor C 1, one end of the other end of capacitor C 1 and resistance R 1, one end of resistance R 2 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with one end of resistance R 4 with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 3 with one end of inductance L 2, the other end of inductance L 3 is connected with one end of capacitor C 4, the other end of capacitor C 4 is connected with the input of power amplifier T2, the output of power amplifier T2 is connected with VHF output signal, the other end of resistance R 1 is connected with one end of capacitor C 5 with one end of resistance R 3, the other end of resistance R 3 is connected with one end of capacitor C 2 with the emitter of triode Q1, the other end of inductance L 2 is connected with one end of capacitor C 3 with one end of resistance R 5, the other end of resistance R 4, the other end of resistance R 2, the other end of capacitor C 2, the other end of resistance R 5, the other end ground connection of capacitor C 3 and capacitor C 5.
In use, two power amplifiers have been realized again the amplification to signal to the utility model, and VHF input signal is coupled to the base stage of triode Q1 through capacitor C 1, form amplifying return circuit.The resonant tank that the emitter of inductance L 1, inductance L 2, triode Q1 forms; While inductance L 2, capacitor C 2, capacitor C 3 forms a filter circuit V1, and inductance L 3 is filter circuit V2 with capacitor C 4.Specifically in use, by above-mentioned two filter circuits, signal is carried out to filtering, output signal is had compared with good quality.
The above execution mode, it is better embodiment of the present utility model, be not to limit the utility model practical range, the equivalence of doing according to structure, feature and principle described in the utility model claim therefore all changes or modifies, and all should comprise in the utility model patent claim.
Claims (1)
1. the VHF frequency band signals amplifying circuit of two filtering, it is characterized in that: comprise power amplifier T1, the input of power amplifier T1 is connected with VHF input signal, the output of power amplifier T1 is connected with one end of capacitor C 1, one end of the other end of capacitor C 1 and resistance R 1, one end of resistance R 2 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with one end of resistance R 4 with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 3 with one end of inductance L 2, the other end of inductance L 3 is connected with one end of capacitor C 4, the other end of capacitor C 4 is connected with the input of power amplifier T2, the output of power amplifier T2 is connected with VHF output signal, the other end of resistance R 1 is connected with one end of capacitor C 5 with one end of resistance R 3, the other end of resistance R 3 is connected with one end of capacitor C 2 with the emitter of triode Q1, the other end of inductance L 2 is connected with one end of capacitor C 3 with one end of resistance R 5, the other end of resistance R 4, the other end of resistance R 2, the other end of capacitor C 2, the other end of resistance R 5, the other end ground connection of capacitor C 3 and capacitor C 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241640.7U CN203968069U (en) | 2014-05-10 | 2014-05-10 | The VHF frequency band signals amplifying circuit of a kind of pair of filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241640.7U CN203968069U (en) | 2014-05-10 | 2014-05-10 | The VHF frequency band signals amplifying circuit of a kind of pair of filtering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203968069U true CN203968069U (en) | 2014-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420241640.7U Expired - Fee Related CN203968069U (en) | 2014-05-10 | 2014-05-10 | The VHF frequency band signals amplifying circuit of a kind of pair of filtering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203968069U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020456A (en) * | 2014-11-25 | 2015-11-04 | 成都雷克尔科技有限公司 | Boosting double-filtering touch type water-saving faucet based on logic amplification circuit |
| CN105023354A (en) * | 2014-11-28 | 2015-11-04 | 成都雷克尔科技有限公司 | Logic-protection emitter-coupled double-filtering automatic alarm system |
| CN113114150A (en) * | 2015-12-24 | 2021-07-13 | 株式会社村田制作所 | Filter circuit and capacitor element |
-
2014
- 2014-05-10 CN CN201420241640.7U patent/CN203968069U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020456A (en) * | 2014-11-25 | 2015-11-04 | 成都雷克尔科技有限公司 | Boosting double-filtering touch type water-saving faucet based on logic amplification circuit |
| CN105023354A (en) * | 2014-11-28 | 2015-11-04 | 成都雷克尔科技有限公司 | Logic-protection emitter-coupled double-filtering automatic alarm system |
| CN113114150A (en) * | 2015-12-24 | 2021-07-13 | 株式会社村田制作所 | Filter circuit and capacitor element |
| CN113114150B (en) * | 2015-12-24 | 2024-01-16 | 株式会社村田制作所 | Filter circuit and capacitive element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20150510 |
|
| EXPY | Termination of patent right or utility model |