Electric control conversion terahertz band-pass/band-stop filter

Abstract

The invention relates to an electric control conversion terahertz band-pass / band-stop filter. The filter comprises a high-resistance silicon substrate and a two-dimensional array fixed on the surfaceof an insulating layer positioned on the high-resistance silicon substrate. Each array unit comprises an n-shaped metal structure, two T-shaped metal structures, two I-shaped metal structures and a lead. The inner phase change gaskets are located below the opposite ends of the two I-shaped structures in each unit, and the middle phase change gaskets are located below the transverse strips of the T-shaped structures opposite between the rows. Two electrodes are respectively fixed on two sides of the two-dimensional array and are respectively connected with the positive electrode and the negative electrode of the direct-current power supply, and when not powered on, the phase change gasket is low in conductivity, when the filter is electrified and heated, the phase change gasket is high in conductivity, and the filter works in a band-pass filtering state. Conversion of the band-pass filtering state and the band-stop filtering state of the terahertz filter is achieved through electric control, the terahertz filter with different functions does not need to be replaced complexly, the electric control conversion terahertz band-pass / band-stop filter is suitable for different occasions andeasy to operate, and the application range of the terahertz filter is remarkably expanded.

Description

technical field [0001] The invention relates to the field of terahertz technology, in particular to an electrically controlled conversion terahertz bandpass / bandstop filter. Background technique [0002] The sixth-generation mobile communication system will use ultra-high spectrum resources in the terahertz band, so it is necessary to accelerate the research and development of terahertz sources, detectors and related functional devices. At present, due to the direct application of microwave and optical theory research methods in the terahertz field, there are still many problems, and terahertz devices are very scarce. Therefore, the development of high-performance terahertz devices is the key to the rapid development of terahertz technology. Terahertz filters can be used to extract or filter terahertz signals to eliminate environmental noise and meet the needs of many practical applications. They are an indispensable functional device in the terahertz field. At present, ter...

AI Technical Summary

Problems solved by technology

At present, terahertz filters are divided into two types: band-stop filters and band-pass filters. These two types of filters cannot realize the conversion of band-pass-band-stop functions, which greatly limits the practical application of these two types of terahertz filters. scope

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