CN205407754U - Ultrashort wave modular system - Google Patents
Ultrashort wave modular system Download PDFInfo
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- CN205407754U CN205407754U CN201620210660.7U CN201620210660U CN205407754U CN 205407754 U CN205407754 U CN 205407754U CN 201620210660 U CN201620210660 U CN 201620210660U CN 205407754 U CN205407754 U CN 205407754U
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- modular system
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Abstract
The utility model discloses an ultrashort wave modular system, including pulse amplifier, filtering forming net twine, broadband amplifier and antenna, pulse amplifier includes drive signal source, derivative network and zero bias amplifier circuit, and the drive signal source connects gradually derivative network, zero bias amplifier circuit, filtering forming net twine, broadband amplifier and antenna. The utility model discloses ultrashort wave modular system has advantages such as compact structure, small, with low costs, easy realization, has broken through the bottleneck that traditional switching mode pulse generation ware was subject to the switching element characteristic, and only relevant with produced pulse width, and application range is wide.
Description
Technical field
This utility model relates to a kind of modular system, specifically a kind of ultrashort wave modular system.
Background technology
Ultrashort wave is also known as very high frequency(VHF) ripple, metric wave (wave-length coverage is 1 meter to 10 meters), frequency is from 30 megahertzs to radio wave conspicuous for 300M, disseminate bandwidth, the radiation characteristic relying on electromagnetism is propagated in short distance, transmit audio signal for television broadcasting and wireless microphone, adopt the antenna of sharp directivity to can compensate for the decay of transmitting procedure.Ultrashort wave propagation (ultra-shortwavepropagation), wavelength is that the electric wave of 10～1 meters (corresponding frequencies is 30～300 megahertzs) is through ionospheric propagation.Ultrashort wave ionospheric propagation has beyond-the-horizon communication and transmission to propagate two kinds of principal modes.
For ultrashort wave modular system, the design of its pulse amplifier is particularly important, and traditional switch type pulse amplifier is limited to the bottleneck of switching device characteristics, and the width of its frequency has very big restriction, it is impossible to meet every field for ultrashort demand.
Summary of the invention
The purpose of this utility model is in that to provide a kind of ultrashort wave modular system, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of ultrashort wave modular system, including pulse amplifier, filtering molding network, broadband amplifier and antenna, described pulse amplifier includes exciting signal source, derivative network and zero offset amplifying circuit, and exciting signal source is sequentially connected with derivative network, zero offset amplifying circuit, filtering molding network, broadband amplifier and antenna；
The circuit structure of pulse amplifier includes signal source RS, resistance R1, electric capacity C1 and audion VT1, signal source RS one end connects electric capacity C1, the signal source RS other end connects resistance R1 ground connection, the resistance R1 other end connects the electric capacity C1 other end, resistance R2 and audion VT1 base stage respectively, the resistance R2 other end connects power supply VCC and resistance R3 respectively, the resistance R3 other end is connecting triode VT1 colelctor electrode and electric capacity C2 respectively, and the electric capacity C2 other end connects resistance R4 and audion VT1 emitter stage ground connection.
As further program of the utility model: described power supply VCC voltage is 5V.
As this utility model further scheme: described exciting signal source is the square-wave signal Vin of Transistor-Transistor Logic level, and rising edge and trailing edge are 1ns, and pumping signal width is 400ns.
Compared with prior art, the beneficial effects of the utility model are: the advantages such as this utility model ultrashort wave modular system has compact conformation, volume is little, cost is low, be easily achieved, breach traditional switch type pulse generator and be limited to the bottleneck of switching device characteristics, and only relevant with produced pulse width, use scope wide.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of ultrashort wave modular system；
Fig. 2 is the circuit diagram of pulse amplifier in ultrashort wave modular system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1～2, in this utility model embodiment, a kind of ultrashort wave modular system, including pulse amplifier, filtering molding network, broadband amplifier and antenna, described pulse amplifier includes exciting signal source, derivative network and zero offset amplifying circuit, and exciting signal source is sequentially connected with derivative network, zero offset amplifying circuit, filtering molding network, broadband amplifier and antenna；
The circuit structure of pulse amplifier includes signal source RS, resistance R1, electric capacity C1 and audion VT1, signal source RS one end connects electric capacity C1, the signal source RS other end connects resistance R1 ground connection, the resistance R1 other end connects the electric capacity C1 other end, resistance R2 and audion VT1 base stage respectively, the resistance R2 other end connects power supply VCC and resistance R3 respectively, the resistance R3 other end is connecting triode VT1 colelctor electrode and electric capacity C2 respectively, and the electric capacity C2 other end connects resistance R4 and audion VT1 emitter stage ground connection.
Power supply VCC voltage is 5V.
Exciting signal source is the square-wave signal Vin of Transistor-Transistor Logic level, and rising edge and trailing edge are 1ns, and pumping signal width is 400ns.
Operation principle of the present utility model is: refer to Fig. 1, the square-wave signal Vin of Transistor-Transistor Logic level passes through a derivative network, extract rising edge and the trailing edge of base band pulse, obtain unit impulse pulse, then through zero offset amplifying circuit, filter trailing edge, and amplify rising edge, unit impulse pulse after amplification carries out the broadband signal of shaping pulse formation frequency domain finite by filtering molding network, finally amplifies transmitting.As long as filtering molding network according to Fig. 1 appropriate design, it is possible to reach different designing requirements.The advantages such as this utility model ultrashort wave modular system has compact conformation, volume is little, cost is low, be easily achieved, breach traditional switch type pulse generator and are limited to the bottleneck of switching device characteristics, and only relevant with produced pulse width, use scope wide.
Referring to Fig. 2, derivative network is made up of electric capacity and resistance, is actually the high pass circuit that a time constant is very short, and its effect is the rising edge and the trailing edge that take out square-wave signal, to reduce the dutycycle of signal.Zero offset amplifying circuit filters the reverse differential signal that trailing edge is formed while amplifying forward differential signal, signal after differential amplification is carried out shaping to produce required waveform shape and frequency spectrum by filtering molding network, and final pulse exports antenna through broadband amplifier.Derivative network is made up of time constant a lot of high pass circuit fewer than the input pulse persistent period R1, C1, this circuit is used for the square-wave voltage being added on input becomes positive and negative peak voltage output, because output voltage has represented the rate of change of input voltage, so this change procedure is called differential.Zero offset amplifying circuit adopts single stage transistor total radio amplifier, that VT1 adopts is BFP450, because to make amplifying circuit elimination negative pulse, so transistor VT1 must be made to be operated in the critical point of cut-off region and amplification region, the step of design single stage transistor amplifying circuit is first static state, afterwards dynamically.By ADS, BFP450 is carried out DC point test, find suitable quiescent point.In zero offset amplifying circuit, R2 and the R1 in peaker together constitutes partial pressure type DC channel.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a ultrashort wave modular system, including pulse amplifier, filtering molding network, broadband amplifier and antenna, it is characterized in that, described pulse amplifier includes exciting signal source, derivative network and zero offset amplifying circuit, and exciting signal source is sequentially connected with derivative network, zero offset amplifying circuit, filtering molding network, broadband amplifier and antenna；
The circuit structure of pulse amplifier includes signal source RS, resistance R1, electric capacity C1 and audion VT1, signal source RS one end connects electric capacity C1, the signal source RS other end connects resistance R1 ground connection, the resistance R1 other end connects the electric capacity C1 other end, resistance R2 and audion VT1 base stage respectively, the resistance R2 other end connects power supply VCC and resistance R3 respectively, the resistance R3 other end is connecting triode VT1 colelctor electrode and electric capacity C2 respectively, and the electric capacity C2 other end connects resistance R4 and audion VT1 emitter stage ground connection.
2. ultrashort wave modular system according to claim 1, it is characterised in that described power supply VCC voltage is 5V.
3. ultrashort wave modular system according to claim 1, it is characterised in that described exciting signal source is the square-wave signal Vin of Transistor-Transistor Logic level, and rising edge and trailing edge are 1ns, and pumping signal width is 400ns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210660.7U CN205407754U (en) | 2016-03-18 | 2016-03-18 | Ultrashort wave modular system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210660.7U CN205407754U (en) | 2016-03-18 | 2016-03-18 | Ultrashort wave modular system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205407754U true CN205407754U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620210660.7U Expired - Fee Related CN205407754U (en) | 2016-03-18 | 2016-03-18 | Ultrashort wave modular system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007938A (en) * | 2017-04-14 | 2017-08-04 | 深圳市博实医疗科技有限公司 | System and the ultrashort wave generating device of pulsed occur for pulsed ultrashort wave |
| CN109765434A (en) * | 2019-02-22 | 2019-05-17 | 北京遥感设备研究所 | A kind of pulse signal pulse width measure device using ratio threshold judgement |
-
2016
- 2016-03-18 CN CN201620210660.7U patent/CN205407754U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007938A (en) * | 2017-04-14 | 2017-08-04 | 深圳市博实医疗科技有限公司 | System and the ultrashort wave generating device of pulsed occur for pulsed ultrashort wave |
| CN109765434A (en) * | 2019-02-22 | 2019-05-17 | 北京遥感设备研究所 | A kind of pulse signal pulse width measure device using ratio threshold judgement |
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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: 20160727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |