Avalanche transistor based ultra wideband pulse generation circuit

An ultra-broadband pulse and avalanche triode technology, which is applied in the direction of electric pulse generator circuit and semiconductor device with avalanche effect to generate pulses, can solve the problems of limiting the scope of use and requiring picosecond lasers, etc.

Inactive Publication Date: 2016-06-15
徐云鹏
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  • Abstract
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Problems solved by technology

High-voltage picosecond photoconductive switch technology can generate high-quality picoseco

Method used

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  • Avalanche transistor based ultra wideband pulse generation circuit
  • Avalanche transistor based ultra wideband pulse generation circuit
  • Avalanche transistor based ultra wideband pulse generation circuit

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Embodiment Construction

[0022] figure 1 It is a functional block diagram of an ultra-wideband pulse generator. The generation of narrow pulse signals with ultra-wideband characteristics is generally achieved by using an extremely fast switch to discharge the energy storage element. The high-speed switch is controlled by the trigger signal. Whenever the rising edge of the trigger signal arrives, the high-speed switch is quickly opened to discharge the energy storage element to form the rising edge of the narrow pulse signal, and then quickly shut off to form the falling edge of the narrow pulse signal.

[0023] figure 2 It is the schematic diagram of the avalanche circuit. In the figure, the transistor T is cut off when there is no pulse input, and the avalanche critical state is under the action of the bias voltage Vcc. At this time, Vcc charges the capacitor C2 through R2. When the input pulse arrives, the input signal acts on the avalanche state of the trigger transistor T through the capacitor C...

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Abstract

The present invention discloses an avalanche transistor based ultra wideband pulse generation circuit. The system comprises an oscillation source, an energy storage element and a high-speed switch. With reference to a principle of an MARX circuit, a method of increasing an output pulse amplitude by means of cascading is provided; in addition, the improved circuit adopts a synchronous trigger manner, so that inter-stage delay of the MARX circuit is overcome; and the system adopts a logic circuit solution or a CPLD solution so as to generate a demanded trigger signal for a pulse generator. The UWB pulse generation circuit with one-order Gaussian pulse as the target has the characteristics of high data transmission rate, lower power consumption, high perspective capability and so on, and can be widely applied to multiple fields like military, rescue, medical care, measurement and so on.

Description

technical field [0001] The invention belongs to the field of ultra-wideband short-distance wireless communication, and in particular relates to an ultra-wideband pulse generation circuit based on an avalanche triode. The system is a UWB pulse generation circuit targeting first-order Gaussian pulses, and has high data transmission rate and low power consumption. , perspective ability and other characteristics, it can be widely used in military, rescue, medical treatment, measurement and many other fields. Background technique [0002] UWB (UltraWideband, UWB) is a technology that uses nanosecond-level extremely narrow pulses to send information. The relative bandwidth of the signal, that is, the ratio of the signal bandwidth to the center frequency is greater than 25%. It has high research value. Ultra-wideband radar has strong penetration and high range resolution, as well as low spectral density and high anti-interference ability. Ultra-wideband technology has high applica...

Claims

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Application Information

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IPC IPC(8): H03K3/335
Inventor 徐云鹏
Owner 徐云鹏
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