Fano resonance microwave sensor based on metal spiral structure

Abstract

The invention relates to a Fano resonance microwave sensor based on a metal spiral structure, the microwave sensor comprises a two-layer structure, the upper layer is a metal layer, and the lower layer is a dielectric layer; wherein the metal layer adopts a quadruple rotationally symmetrical metal spiral structure. Compared with the prior art, the device has the advantages of being compact in size, easy to integrate, easy to conform and the like.

Description

technical field [0001] The invention relates to a microwave sensor, in particular to a Fano resonance (Fano resonance, Fano resonance) microwave sensor based on a metal helical structure. Background technique [0002] With the development and progress of science and technology, microwave technology has been widely used in aerospace, wireless communication and satellite remote sensing. With the continuous development of microwave technology, the research and exploration of microwave sensors has become a hot spot in today's academic circles. As an important property of matter, the refractive index contains a lot of valuable information. In the fields of food agriculture, geological exploration, biomedicine, chemical industry and the development of new materials, the refractive index characteristics of materials are all used. Therefore, an accurate refractive index detection system It has very important academic and application value. Because microwaves are very sensitive to ...

AI Technical Summary

Problems solved by technology

However, due to the wide bandwidth of the Fano resonance in these structures, the figure of merit (FOM) of the sensor is only about 10, which limits its measurement accuracy

There are many ways to optimize the parameter of quality factor, but in actual design, it is not possible to blindly pursue high quality factor and ignore many issues such as whether the device can be miniaturized, integrated, and easy to manufacture.

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