Simple and compact wide-stop-band filtering patch antenna

Abstract

The invention discloses a simple and compact wide-stop-band filtering patch antenna. The simple and compact wide-stop-band filtering patch antenna comprises a dielectric substrate and a metal floor which are arranged at an interval up and down and a metal probe; a radiation patch is arranged in the middle of the upper surface of the dielectric substrate; the radiation patch is provided with an open ring-shaped gap; a U-shaped branch is arranged on the lower surface of the dielectric substrate; the open ring-shaped gap and the U-shaped branch are consistent in opening direction and are both ofa symmetrical structure about a y-directional central axis of the dielectric substrate; one end of the metal probe is concentric with a round hole formed on the metal floor to form a coaxial feeding structure; and the other end of the metal probe is connected with the radiation patch after sequentially passing through an intersection of the metal U-shaped branch and the y-directional central axisand the dielectric substrate. The simple and compact wide-stop-band filtering patch antenna is simple in structure; a volume of a radio frequency front end can be greatly reduced and no additional insertion loss is generated; filtering performance can be implemented under a compact high-gain structure; and the simple and compact wide-stop-band filtering patch antenna is easy to machine, low in cost, small in volume and more suitable for planar antenna array design and large-scale production.

Description

technical field [0001] The invention relates to a filter antenna, in particular to a simple and compact wide stopband filter patch antenna. Background technique [0002] With the development of modern wireless communication technology, the communication system tends to be miniaturized, integrated and multifunctional. Due to the mature development of large-scale integrated circuit technology and semiconductor IC technology, the miniaturization design of microwave active circuits can be realized, and single-chip multi-functional integration can be realized by using packaging technology. However, for microwave passive circuits, especially for the design of RF front-end devices, their working mechanism is limited by physical size and environmental factors. Difficulty of transformation. [0003] In wireless communication systems, devices such as filters and antennas are essential, and their functions are mainly to realize signal selection, filter out noise outside the frequency...

AI Technical Summary

Problems solved by technology

The design methods of filter antennas are mainly divided into two categories: one method is the integrated design of the filter and the antenna, and the antenna is used as the last stage of the filter to resonate, but there is still insertion loss in the system

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