SIW-technology-based loaded-dielectric-rod-included broadband high-gain printed horn antenna and array

Abstract

The invention, which belongs to the field of the radio technology, provides a small-aperture broadband high-gain SIW-technology-based loaded-dielectric-rod-included broadband high-gain printed horn antenna unit comprising a microstrip line feeding structure, a substrate integrated waveguide (SIW), a loaded horn, and a loaded-dielectric plate. The loaded-dielectric plate serves as the top of the antenna; the bottom of the loaded-dielectric plate is connected with a large end of the loaded horn; a small end of the loaded horn is connected with the top of the substrate integrated waveguide; and the bottom of the substrate integrated waveguide is connected with the top of the microstrip line feeding structure. The loaded-dielectric plate is formed by integration of upper-lower splicing of a dielectric plate I and a dielectric plate II, wherein the dielectric plate I and the dielectric plate II have trapezoidal longitudinal sections. A plurality of antennas form an array based on needs. Theinvention provides a broadband high-gain printed antenna working a Ka / U waveband.

Description

technical field [0001] The invention relates to a printed horn antenna, in particular to a broadband high-gain printed antenna working in the Ka / U band. Background technique [0002] Substrate Integrated Waveguide (SIW) technology is a technology capable of miniaturizing and integrating waveguides. Since this technology was proposed, it has been widely used in the field of antenna design. The horn antenna made by this technology has a small aperture due to its low profile and cannot obtain high gain. It is necessary to expand the aperture and add a lens to the large aperture to increase the gain. Loading the horn with the same thickness as the substrate-integrated waveguide provides a method for enlarging the aperture area of ​​the waveguide port and enhancing the directivity. Loaded dielectric rods provide an effective means to obtain high-gain radiation at the waveguide port. The dielectric rod loaded on the waveguide port has a small cross-sectional area perpendicular t...

AI Technical Summary

Problems solved by technology

The dielectric rod loaded on the waveguide port has a small cross-sectional area perpendicular to the axial direction, which can greatly improve the antenna gain, but the disadvantage is that it cannot be integrated in the design

In addition, the matching section between the waveguide and the dielectric rod will make the antenna structure more complicated and increase the cost of the antenna, while the substrate-integrated waveguide is easy to integrate and feed, and since the waveguide itself contains a dielectric, it is also easy to achieve matching with the dielectric rod

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