Dual-layer patch dual-frequency disc microstrip antenna

A microstrip antenna and patch technology, which is applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problem of low bandwidth of microstrip antenna
CN105098342AInactive Publication Date: 2015-11-25SYSU CMU SHUNDE INT JOINT RES INST +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
SYSU CMU SHUNDE INT JOINT RES INST
Publication Date
2015-11-25
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a dual-layer patch dual-frequency disc microstrip antenna. The microstrip antenna discloses an upper layer part and a lower layer part, wherein the upper layer part comprises a first dielectric substrate and a metal patch located at the upper surface of the first dielectric substrate; the first dielectric substrate and the metal patch are round and have the same radius; the center of the metal patch is overlapped with the center of the first dielectric substrate; the lower layer part includes a second dielectric substrate, a grooved round patch located at the upper surface of the second dielectric substrate, as well as a metal grounding plate which is located at the lower surface of the second dielectric substrate, and a coaxial line; the second dielectric substrate is round; the center of the second dielectric substrate is overlapped with the center of the grooved round patch; a feed hole of the coaxial line is formed at the center of the second dielectric substrate; and the feeding mode of the antenna is a coaxial feed mode. According to the antenna, two resonant points can be excited, so that the relative bandwidth of the antenna can reach 19% or higher, and therefore, the working bandwidth of the antenna can be improved.
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Description

technical field

[0001] The invention belongs to the field of antenna design, and more specifically relates to a novel dual-frequency disc microstrip antenna with double-layer patches. Background technique

[0002] The development of wireless communication puts forward new requirements for the performance of antennas (especially patch antennas). Microstrip patch antennas are light in weight, small in size, low in profile, have good directivity, and flexible feeding It has the advantages of being easy to integrate with other printed circuits, and has broad application prospects in many fields. However, the bandwidth of ordinary microstrip antennas is low, only 0.6%~3%, which becomes the main obstacle to the widespread application of microstrip antennas. Contents of the invention

[0003] The purpose of the present invention is to overcome the characteristics of the narrow bandwidth of the existing microstrip antenna, and propose a dual-frequency disc microstrip antenna with...

Claims

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