Implementation method of H-type groove fractal UC-EBG (Uniplanar Compact Electromagnetic Band Gap) structure oriented to multifrequency antenna substrate

Abstract

The invention relates to an implementation method of a multi-frequency-band UC-EBG (Uniplanar Compact Electromagnetic Band Gap) structure and belongs to the technical field of electromagnetic propagation and reception. According to the method provided by the invention, an H-type groove is arranged on a unit paster, so as to design a four-frequency-band H-type groove UC-EBG structure within a frequency range of less than 60GHz; the invention also provides a method for realizing the miniaturization of the structure by increasing the groove length w of the H-type groove, decreasing the groove width a and increasing the dielectric constant epsilon of a dielectric substrate and the like. In addition, the method provided by the invention can be used for further realizing the miniaturization of the EBG structure by introducing an H-type groove primary fractal structure, and designing the four-frequency-band H-type groove UC-EBG structure within a frequency range of less than 3 GHz by enlarging the structure through the period unit size SF (Scale Factor). The implementation method provided by the invention can be used for solving the problem that the EBG structure has less possibility of realizing multiple frequency bands in a lower frequency because of the size restriction and providing guidance for the specific design of a multi-frequency-band miniaturized electromagnetic band-gap structure.

Description

technical field [0001] The invention is a realization method of designing a multi-band novel electromagnetic bandgap structure by engraving H-shaped grooves on UC-EBG structural period unit patches and introducing a first-order fractal structure, belonging to the technical field of electromagnetic transmission and reception. Background technique [0002] 1. The concept of EBG structure and its bandgap formation mechanism [0003] Photonic crystals are periodic dielectric materials with frequency band gaps. They were first proposed in the field of optics, and later expanded to microwave and millimeter wave bands. They are called microwave photonic crystals or electromagnetic band gaps, referred to as EBG structures. The EBG structure has unique electromagnetic wave propagation characteristics, and can be formed by periodic arrangement of metal, dielectric, ferromagnetic or ferroelectric materials implanted in dielectric materials, which has aroused great interest. [0004] T...

AI Technical Summary

Problems solved by technology

[0015] At present, there are very few studies on the properties of the electromagnetic bandgap structure AMC and its multi-band characteristics at home and abroad.

Especially for the low frequency band design of multi-band electromagnetic bandgap structure is almost no

Due to the long wavelength corresponding to the low frequency band, the unit size of the general EBG structure is large, which limits its practical application

Therefore, it is a big challenge to design a miniaturized multi-band UC-EBG structure

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