Ultra-wideband low-loss full-waveguide double-balanced terahertz frequency multiplier

Abstract

The invention belongs to the technical field of terahertz frequency multiplication, and relates to a terahertz frequency multiplier. An ultra-wideband low-loss full-waveguide double-balanced terahertzfrequency multiplier comprises an input waveguide used for inputting signals in a TEM mode; a frequency multiplier circuit used for carrying out frequency multiplication processing on an input signal to generate a frequency multiplication signal; and an output waveguide for outputting a signal in a TE10 mode, wherein the frequency multiplier circuit is connected between the input waveguide and the output waveguide, the input waveguide is a coplanar waveguide, and the output waveguide is a ridge waveguide. According to the terahertz frequency multiplier, the coplanar waveguide and the ridge waveguide are adopted, so that the working bandwidth of several octaves can be realized, and the problem that the working bandwidth of the frequency multiplier is limited by the rectangular waveguide of the traditional terahertz frequency multiplier is effectively solved; a Schottky diode pair adopts a double-balance four-tube-core structure form based on field symmetrical distribution, so that thebalance is better, the harmonic recovery capability is strong, the harmonic component is small, more energy is distributed to main signals, and the frequency conversion loss is small.

Description

technical field [0001] The invention belongs to the technical field of terahertz frequency multiplication, and relates to a terahertz frequency multiplier. Background technique [0002] Terahertz waves have the advantages of low molecular energy, strong transmittance to composite materials, and wide spectrum. They have broad application prospects in the fields of biomedicine, nondestructive testing, and space detection, and have become a research hotspot. Terahertz frequency multiplier is a key component of terahertz instruments and engineering applications, and plays a decisive role in its performance. Traditional terahertz measurement instrument broadband transmitters mostly use single-balanced double-tube frequency multipliers based on rectangular waveguides and microstrip transmission lines, which have narrow bandwidths, limited ability to recover harmonic signals, many harmonic components, and large frequency conversion losses. The market demands ultra-wideband and hig...

AI Technical Summary

Problems solved by technology

Traditional terahertz measurement instrument broadband transmitters mostly use single-balanced double-tube frequency multipliers based on rectangular waveguides and microstrip transmission lines, which have narrow bandwidths, limited ability to recover harmonic signals, many harmonic components, and large frequency conversion losses. The market demands ultra-wideband and high harmonic suppression, and the performance of traditional frequency multipliers can no longer meet the performance requirements of terahertz test instruments.

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