H face sectoral horn antenna including filter function

Abstract

The invention relates to an H-plane sectorial horn antenna with the function of a filter. The existing horn antenna that can not be planar integrated has a large size and a high processing cost. In the invention, a metal layer is plated at two faces of a dielectric substrate, and an upper metal layer is etched with a micro-strip line used for feeding and a micro-strip converter. A plurality of plated-through holes aligned circularly are installed by penetrating the upper metal layer, the dielectric substrate and a lower metal layer, thus forming a substrate integrated waveguide and an H-planesectorial horn. Four perturbation plated-through holes are installed by penetrating the whole substrate on the medial axis inside the opening area of the H-plane sectorial horn, used for regulating the impedance matching and forming the filtering function. The new structure adopts the substrate integrated waveguide technology, so that the function equivalent to traditional metal H-plane sectorialhorn is implemented on the normal dielectric substrate, meanwhile the filtering function of the traditional inductive post waveguide filter is successfully integrated. The dual-function integrated module is very compact in size; the whole structure can be manufactured by low cost PCB technology, and can seamlessly integrate with the system.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to an H-plane fan-shaped horn antenna including a filter function based on a substrate integrated waveguide technology, which can be used as a radio frequency transceiver front-end antenna and applied to wireless communication occasions. As a planar antenna, it is not only a dual-function integrated module of filter and antenna, but also different from most planar antennas, it is an antenna that provides vertical polarization and can be used in some special occasions. Background technique [0002] As a standard antenna widely used in antenna testing and other occasions, the traditional metal horn antenna has the advantages of high gain, good directivity, simple structure, and easy design and manufacture. However, the shortcomings of this antenna are also obvious, such as large volume, complicated connection with subsequent circuits, and inability to integrate with the circuit plane...

AI Technical Summary

Problems solved by technology

This type of antenna can well retain the highly directional and high-gain vertically polarized radiation characteristics of metal horn antennas, but it also has the disadvantage of large volume of traditional metal horn antennas and is not easy to planar integration.

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