Magnetoelectric dipole filter antenna with approximate elliptical filter response

A filter response, approximate ellipse technology, applied to antennas, resonant antennas, antenna grounding devices, etc., can solve problems such as affecting the antenna radiation pattern, increasing the complexity of the feed network, and deteriorating the radiation pattern, achieving stable gain and symmetry pattern, improved out-of-band radiation suppression level, and the effect of good filtering frequency response
CN110401026AActive Publication Date: 2019-11-01XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2019-11-01

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Abstract

The invention belongs to the technical field of wireless communication, and discloses a magnetoelectric dipole filter antenna with an approximate elliptical filter response. A feed structure comprisesa coupling groove printed on the upper layer of a double-sided copper-clad dielectric plate, and a fork-shaped microstrip power divider and a U-shaped short circuit branch printed on the lower layerof a double-sided copper-clad dielectric plate with a thickness of 1 mm; the radiation structure includes a radiation patch, a coupling branch, and a vertical short circuit wall; the radiation patch and the coupling branch are respectively printed on the upper layer and the lower layer of a double-sided copper-clad dielectric plate with a thickness of 1.5 mm; and the vertical short circuit wall isprinted on two one-sided copper-clad dielectric plates with a thickness of 0.5 mm. The magnetoelectric dipole filter antenna with an approximate elliptical filter response is realized, and a good filter frequency response is realized. The magnetoelectric dipole filter antenna with the approximate elliptical filter response disclosed the invention greatly expands the application of the magnetoelectric dipole antenna in the field of filter antennas.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, in particular to a magnetoelectric dipole filter antenna with approximately ellipse filter response. Background technique

[0002] At present, the closest prior art: the methods for implementing filter antennas in the industry mainly include the following: first, an antenna radiator is used to replace the last-order resonator of a bandpass filter to implement a filter antenna. Based on the principle of filter synthesis, the bandpass filter needs to be designed in advance. Although this method can achieve a good filter response, the insertion loss introduced by the multi-order resonator in the bandpass filter reduces the radiation gain of the antenna. In order to solve this problem, a design method of a filter antenna without using an additional filter circuit is proposed. It includes two aspects, on the one hand, introducing a resonant structure in the antenna feed network, and o...

Claims

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