EBG surface-loaded millimeter wave SIW horn antenna

Abstract

The invention discloses an EBG surface-loaded millimeter wave SIW horn antenna and belongs to the technical field of antenna microwaves. The antenna comprises an upper EBG layer metal plate (4), an upper EBG layer dielectric substrate (1), an upper radiation layer metal plate (5), a radiation layer dielectric substrate (2), a lower radiation layer metal plate (6), a lower EBG layer dielectric substrate (3), a lower EBG layer metal plate (7), a feed layer metal plate (8) and feed layer metal ground (9); the upper EBG layer metal plate (4), the upper EBG layer dielectric substrate (1), the upperradiation layer metal plate (5), the radiation layer dielectric substrate (2), the lower radiation layer metal plate (6), the lower EBG layer dielectric substrate (3) and the lower EBG layer metal plate (7) are laminated together in sequence; the feed layer metal plate (8) is in coplanar interconnection with the upper radiation layer metal plate (5); the feed layer metal ground (9) is in coplanarinterconnection with the lower radiation layer metal plate (6); a metal patch array and metalized via holes (10) are distributed on the upper EBG layer metal plate (4); the upper EBG layer metal plate and the lower EBG layer metal plate are consistent in structure; and the upper EBG layer dielectric substrate and the lower EBG layer dielectric substrate are consistent in structure; and a plurality of SIW horn cavity metallized through holes (11) are equivalent to a rectangular metal waveguide. The EBG surface-loaded millimeter wave SIW horn antenna is high in front-to-back ratio, high in gainand small in caliber.

Description

technical field [0001] The invention belongs to the field of antenna microwave technology, in particular to a millimeter-wave SIW (Substrate integrated waveguide, dielectric integrated waveguide) horn antenna loaded with an EBG (Electromagnetic BandGap, electromagnetic bandgap) structure. Background technique [0002] With the increasing tension of the electromagnetic spectrum in the traditional microwave band, wireless applications in the millimeter wave band are becoming more and more extensive. In wireless applications in the millimeter wave band, such as point-to-point high-speed communication, high-resolution radar, etc., the demand for antenna miniaturization, high integration, and low cost is increasing. [0003] The traditional horn antenna has the advantages of high front-to-back ratio (front-to-back ratio = forward energy / backward energy), high gain, etc., but its disadvantages such as high profile and large volume limit its application in millimeter waves, especia...

AI Technical Summary

Problems solved by technology

However, due to factors such as thin dielectric sheet thickness and high dielectric constant, the millimeter-wave H-plane SIW horn antenna also has disadvantages such as difficult matching, high back lobe level, and low gain. It is difficult to reduce the aperture length of the wave H-plane SIW horn antenna to less than 1 wavelength of the central operating frequency, and the application of the millimeter-wave H-plane SIW horn antenna in active arrays is greatly limited

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