Narrow pulse signal generator based on clock drive

Abstract

An SRD narrow pulse signal generator basing on the clock drive belongs to the electronic technical field, which relates to the technique of super wide-band communication, pulse radar and pulse source. The generator comprises a clock source, a coupling capacitance, a resonance matching circuit, a pulse forming circuit and a pulse shaping circuit. The generator has simple circuit and convenient modulation. Complexity and power consumption of the circuit are reduced with the help of an automatic bias circuit of SRD which is formed by the matching network and the load resistance, extended power consumption and thermal noise of the circuit are further reduced since all the resonance matching circuits adopt reactive element, particularly a lumped inductance L3 and a Schottky diode are introduced to be a shaping circuit, pulse stretching is effectively inhibited, and pulse delay fall time is greatly compressed, and simultaneously the problem of pulse side lobe and overshoot can be effectively solved. Narrow pulse signals which are generated by the generator have good wave shaping symmetrical characteristic, which can be used as triggering source of Gaussian pulse of higher order differential with high quality and the signal source of super broadband wireless communication and the impacting radar.

Description

technical field [0001] The invention belongs to the field of electronic technology, and relates to ultra-wideband communication, pulse radar and pulse source technology. Background technique [0002] In ultra-wideband wireless communication and impact radar systems, narrow pulse generation has always been one of the key technologies that have attracted much attention. At present, there are two main types of methods for obtaining narrow pulses using electronic semiconductor devices: one uses semiconductor integrated circuits, which are small in size and low in cost, but has small power capacity and narrow frequency response; the other uses discrete semiconductor devices, such as step Recovery diode (Step Recovery Diode, SRD for short), FET, Schottky diode, PIN tube, etc. Among them, SRD is the most commonly used semiconductor diode in the design of electronic narrow pulse generators. It has the advantages of fast response speed, narrow pulse width and high repetition rate. ...

AI Technical Summary

Problems solved by technology

However, the SRD performance parameters can only determine the shortest pulse width of the pulse, and there is no ideal technical solution for the symmetry of the pulse waveform, the overshoot effect and the tailing phenomenon.

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