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Tunable trigger-type ultra wide band narrow pulse generation device and method

An ultra-wideband narrow pulse generation device technology, applied in the field of ultra-wideband detection, to achieve the effects of reducing noise interference, improving flexibility and portability, and increasing amplitude

Active Publication Date: 2016-11-16
SHANDONG ACAD OF SCI INST OF AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although there are quite a lot of similar works, it is possible to design a tunable avalanche pulse trigger signal by combining analog and digital hardware, taking advantage of the tunable characteristics of high-speed digital circuit signals, so as to give full play to the avalanche characteristics of avalanche transistors , a method and apparatus for generating narrower pulses in a simple manner is extremely rare

Method used

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  • Tunable trigger-type ultra wide band narrow pulse generation device and method
  • Tunable trigger-type ultra wide band narrow pulse generation device and method
  • Tunable trigger-type ultra wide band narrow pulse generation device and method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, a tunable trigger type ultra-wideband narrow pulse generating device includes a high-speed signal generating unit; a bipolar trigger unit; a tuner; a differentiator; an avalanche unit; a pulse shaping unit; an edge detection unit and a control unit. The connection control relationship is as follows: the high-speed signal generation unit is controlled by the control unit; the output end of the high-speed signal generation unit is sequentially connected with the bipolar trigger unit, differentiator, avalanche unit and pulse shaping unit;

[0037] The pulse shaping unit is also connected to the edge detection unit, the output of the edge detection unit is connected to the control unit, the output of the control unit is also connected to a tuner, and the tuner is connected to the bipolar trigger unit, A feedback loop is fo...

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Abstract

The invention discloses a tunable trigger-type ultra wide band narrow pulse generation device and method. A control unit controls a high-speed signal generation unit to send a unipolar rectangular wave signal; a bipolar trigger unit converts the unipolar rectangular wave signal into a bipolar rectangular wave signal; a differentiator converts the bipolar rectangular wave signal into a bipolar sharp pulse signal; an avalanche unit is excited by the bipolar sharp pulse signal to generate a positive polarity zero-order Gaussian pulse signal; a pulse shaping unit converts the positive polarity zero-order Gaussian pulse signal into a negative polarity first-order Gaussian pulse signal; an edge detection unit detects a half pulse width of the negative polarity first-order Gaussian pulse signal; the control unit receives pulse width information, controls a tuner to tune high and low level voltages of the bipolar trigger unit and forms a feedback; and when detecting out that the half pulse width is the minimum value, the control unit completes control on the tuner.

Description

technical field [0001] The invention relates to the field of ultra-wideband detection, in particular to a tunable trigger type ultra-wideband narrow pulse generating device and method. Background technique [0002] Ultra-wideband technology is to realize detection, communication, positioning and other functions by processing very short narrow pulses, including generation, transmission and reception. With its advantages of high distance resolution, strong concealment, and strong anti-interference ability, UWB detection system has become a research hotspot in many application fields such as ground penetrating radar, through-wall imaging, and nondestructive testing. [0003] In the ultra-wideband detection system, the narrow pulse source excites the transmitting antenna to radiate ultra-wideband electromagnetic waves. The electromagnetic waves propagate in different media, and the waveform and intensity change with the change of the medium. The electromagnetic waves returned by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/335
CPCH03K3/335Y02D30/70
Inventor 王忠民常天英崔洪亮王丰贵杨秀蔚杨传法张延波张琳
Owner SHANDONG ACAD OF SCI INST OF AUTOMATION