CN204425295U - A kind of novel UWB impulse signal generator - Google Patents
A kind of novel UWB impulse signal generator Download PDFInfo
- Publication number
- CN204425295U CN204425295U CN201420844062.6U CN201420844062U CN204425295U CN 204425295 U CN204425295 U CN 204425295U CN 201420844062 U CN201420844062 U CN 201420844062U CN 204425295 U CN204425295 U CN 204425295U
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- pulse
- circuit
- signal generator
- impulse signal
- high speed
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Abstract
The utility model discloses a kind of novel UWB impulse signal generator, it comprises level Four series circuit, and every grade of circuit is by 8 high speed switching transistors and electric capacity composition, and described circuit externally has three interfaces, trigger interface, output interface and power interfaces.It utilizes the avalanche characteristic of high speed switching transistors, in snowslide conducting moment, electric current increases rapidly in " snowslide " formula, in conjunction with the principle of Marx circuit parallel charging serial electric discharge, add the waveform that reflected ray obtains needs simultaneously, have the following advantages: pulse duration is adjustable: the minimum hundreds of psec that reaches of output pulse width is to a few nanosecond; Pulse amplitude is adjustable: output pulse amplitude can reach tens volts to a few hectovolt; Pulse signal is optional: pulse or positive and negative dipulse signal; Volume is little, lightweight, cost performance is high, have a extensive future.
Description
Technical field
The utility model relates to electron trade technical field of electronic components, particularly one novel UWB impulse signal generator.
Background technology
Ultra broadband (Uitra-Wideband, UWB) technology be with duration be nanosecond even picosecond pulse carry out the New Wireless Technologies of data communication as transport vehicle.Have insensitive to channel fading, low, the low interception capability of transmit signal power spectrum density, system load degree are low, the feature that can provide the positioning precision of several centimetres, make it at numerous areas important roles such as accurately location, ground penetrating radar, Non-Destructive Testing, radio communications.
One of key technology that UWB technology realizes how to design and to produce UWB impulse.Current generation nanosecond impulse method have two kinds: (1) photoelectric method, general principle utilizes the precipitous rising edge of photoconductive switch conducting moment to obtain pulse signal, the pulse amplitude of this type of signal and the stability of width not high (2) electronic method: general principle is the nonlinear switching characteristic utilizing semiconductor device.As the device such as high speed device tunnel diode, step recovery diode, avalanche transistor of nanosecond, picosecond burst pulse can be produced.The wherein pulse that produces of tunnel diode, step recovery diode, the rise time can reach tens to hundreds of psec, but amplitude is only the magnitude of hundreds of millivolt.
Utility model content
For the deficiency that prior art exists, technical problem to be solved in the utility model is to provide a kind of impulse sources producing high stability, wide bandwidth, high-amplitude double polarity pulse signal.
For solving the problems of the technologies described above, a kind of novel UWB impulse signal generator of the utility model comprises level Four series circuit, and every grade of circuit is by 8 high speed switching transistors and electric capacity composition, and described circuit externally has three interfaces, trigger interface, output interface and power interface.
When powering on, power supply charges to level Four circuit the critical avalanche condition that supply voltage reaches circuit simultaneously simultaneously, and when trigger voltage arrives, first discharges successively to fourth stage circuit, obtains the narrow pulse signal of high-amplitude, ultra broadband, i.e. single pulse signal.Then in printed board, add reflected ray can obtain double polarity pulse signal, on the capacitance of control capacittance and reflected ray, the position of short-circuit line can change pulsewidth and the amplitude of output signal.
The utility model utilizes the avalanche characteristic of high speed switching transistors, and in snowslide conducting moment, electric current increases rapidly in " snowslide " formula, in conjunction with the principle of Marx circuit parallel charging serial electric discharge, adds the waveform that reflected ray obtains needs simultaneously, has the following advantages:
(1) pulse duration is adjustable: the minimum hundreds of psec that reaches of output pulse width is to a few nanosecond;
(2) pulse amplitude is adjustable: output pulse amplitude can reach tens volts to a few hectovolt;
(3) pulse signal is optional: pulse or positive and negative dipulse signal;
(4) volume is little, lightweight, cost performance is high, have a extensive future.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model UWB impulse signal generator;
Fig. 2 is that the utility model UWB shock pulse signal generator exports double polarity pulse signal figure.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
Embodiment 1
As shown in Figure 1, the utility model novel UWB impulse signal generator, comprises level Four series circuit, every grade of circuit is by 8 high speed switching transistors and electric capacity composition, described circuit externally has three interfaces, trigger interface 1, power interface 2 and output interface 3.
When powering on, power supply charges to level Four circuit the critical avalanche condition that supply voltage reaches circuit simultaneously simultaneously, and when trigger voltage arrives, first discharges successively to fourth stage circuit, obtains the narrow pulse signal of high-amplitude, ultra broadband, i.e. single pulse signal.Then in printed board, add reflected ray can obtain double polarity pulse signal.As shown in Figure 2, be the double polarity pulse signal waveform be presented at after 27db attenuator on oscilloscope.On the capacitance of control capacittance and reflected ray, the position of short-circuit line can change pulsewidth and the amplitude of output signal.
Claims (2)
1. a novel UWB impulse signal generator, is characterized in that, comprise level Four series circuit, and every grade of circuit is by 8 high speed switching transistors and electric capacity composition, and described circuit externally has three interfaces, trigger interface, output interface and power interfaces.
2. novel UWB impulse signal generator according to claim 1, is characterized in that, printed board arranges reflected ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844062.6U CN204425295U (en) | 2014-12-27 | 2014-12-27 | A kind of novel UWB impulse signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844062.6U CN204425295U (en) | 2014-12-27 | 2014-12-27 | A kind of novel UWB impulse signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425295U true CN204425295U (en) | 2015-06-24 |
Family
ID=53475623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420844062.6U Expired - Fee Related CN204425295U (en) | 2014-12-27 | 2014-12-27 | A kind of novel UWB impulse signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425295U (en) |
-
2014
- 2014-12-27 CN CN201420844062.6U patent/CN204425295U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20211227 |