Shielding G-line terahertz surface wave filter

Abstract

The invention discloses a shielding G-line terahertz surface wave filter. The invention aims to realize a terahertz filter which has the advantages of high quality factor, low loss, selectable frequencies and strong anti-electromagnetic interference capability. According to technical schemes of the invention, two grounding planar waveguide metal strip G lines (4) which are parallel to each other and are symmetrical with each other relative to a center line are arranged on a dielectric substrate (2) which is fixedly suspended in a metal shielding cavity (1) along the box body length direction of the metal shielding cavity (1) and is separated by air layers (3); metal ridge filtering sheets (5) which are symmetrical with each other in opposite directions, face the center line and are arranged at intervals are manufactured on the inner sides of the grounding planar waveguide metal strip G lines (4) along the length direction of the grounding planar waveguide metal strip G lines (4); and therefore, the passband frequency of the shielding G-line terahertz surface wave filter can be adjusted through using the metal ridge filtering sheets (5), and terahertz radio frequency signals can beinputted to the shielding G-line terahertz surface wave filter from one end and are outputted from the other end of the shielding G-line terahertz surface wave filter; and the shielding G-line terahertz surface wave filter can perform filtering and frequency selection on the terahertz radio frequency signals.

Description

technical field [0001] The invention relates to a terahertz surface wave filter structure based on shielding plane G lines. Background technique [0002] Filters are key passive components in microwave communication systems and are widely used. Their size and performance directly affect the size and performance of the entire communication system. Miniaturized and high-performance passive components can reduce system volume, improve system performance, and reduce circuit size while improving filter passband edge selectivity. Filters are often used in systems to separate frequencies, to filter out as many unwanted signals as possible, and to allow useful signals to pass through with as little attenuation as possible. Filters can reduce the interference of signals outside the operating frequency band, and are key components in wireless communication systems. In many microwave devices such as frequency multipliers and mixers, filters are essential frequency-selective component...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that effective interconnection between current terahertz planar circuits cannot be realized, and to provide a shielding-based Novel Terahertz Surface Wave Filter Structure Based on Planar G Lines

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