Ultra-wide band impulsator

Abstract

The invention discloses an ultra-wide band impulsator which comprises a nanosecond level driving positive impulse generating circuit, a speed-sensitive switch circuit, a subnanosecond impulse generating and shaping circuit, a voltage source circuit and a current source circuit. The nanosecond level driving positive impulse generating circuit converts impulse signals with random widths into nanosecond level narrow impulses with relatively fixed widths. The speed-sensitive switch circuit is switched into an on status from an off status under the driving of the narrow impulses, and the static power voltage of the input end of the subnanosecond impulse generating and shaping circuit is made to be reduced to be approach to zero rapidly. No signal is input in the input end of the subnanosecond impulse generating and shaping circuit in a static state, the shaping circuit is in a positive breakover status, and an output end has no signal output. When the speed-sensitive switch circuit is switched into the on status form the off status, the input end of the subnanosecond impulse generating and shaping circuit output currents, and the step recovery diode of the shaping circuit is changed into reversed breakover from positive breakover. After a period of time, the diode is changed into reversed cut-off from the reversed breakover, and the output end output currents. When the output end is connected with a load, the output end generates negative-polarity voltage impulses.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an ultra-wideband pulse generator. Background technique [0002] Pulse ultra-wideband technology has many advantages such as large bandwidth, high capacity, low power consumption, precise positioning, simple structure, anti-interference, anti-multipath, small size, light weight, etc. It is very suitable for high-speed data transmission, precise positioning, etc. [0003] In the pulse UWB system, the pulse generator is not only the core unit of the transmitter, but also an important part of the receiver. The parameters of the pulse signal are directly related to the performance indicators of the system. Therefore, the development of a pulse generator that meets the requirements has always been is one of the hotspots of research. [0004] Pulse width is the determining factor of bandwidth and resolution. In order to meet certain application requirements, various sub-nanosecond pulse ge...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defect that the pulse generator in the prior art cannot simultaneously obtain ultra-wideband pulse signals with high repetition frequency and low ringing, thereby providing a kind of ultra-wideband pulse signal that can generate high repetition frequency and low ringing at the same time. Pulse generator for pulsed signals

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