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Single-patch double-frequency broadband patch antenna

A patch antenna and microstrip patch technology, applied to antennas, devices that enable antennas to work in different bands at the same time, electrical components, etc., can solve problems such as poor axial ratio performance, and achieve lower operating frequency, large bandwidth and gain Effect

Active Publication Date: 2017-02-01
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a single-chip dual-band broadband patch antenna, which is used to increase the bandwidth of the antenna and avoid the gain reduction caused by slotting and patch cutting Problems such as poor axial ratio performance caused by angles make the precise navigation and positioning antenna miniaturized

Method used

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  • Single-patch double-frequency broadband patch antenna
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  • Single-patch double-frequency broadband patch antenna

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The core of the present invention is to provide a single-chip dual-frequency broadband patch antenna, which is used to avoid the problem of gain reduction caused by slotting.

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] figure ...

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Abstract

The invention discloses a single-patch double-frequency broadband patch antenna. The antenna comprises a ground plate, a dielectric plate disposed on the ground plate, a cross-shaped microstrip patch disposed on the dielectric plate and an annular microstrip patch surrounding the periphery of the cross-shaped microstrip patch. Capacitors are arranged between the cross-shaped microstrip patch and the ground plate, the cross-shaped microstrip patch is provided with feed through holes, the feed through holes are internally provided with feed probes respectively, metal disks are arranged between the annular microstrip patch and the dielectric plate, and the metal disks are connected with the feed probes via horizontal band-shaped metal lines respectively. Thus, the antenna needs a single layer patch, the cross-shaped microstrip patch and the annular microstrip patch can generate radiation of different frequency ranges respectively, the two radiation frequency ranges have higher bandwidth and gain, L1 and L2 frequency ranges for operation of four satellite navigation systems can be covered, and the antenna is helpful for miniaturization of an accurate navigation positioning terminal.

Description

technical field [0001] The invention relates to the technical field of radio frequency antennas, in particular to a single-chip dual-frequency broadband patch antenna. Background technique [0002] Microstrip antenna, as a widely used antenna form, is easier to realize miniaturization than other forms of antenna. Traditional microstrip antennas can be divided into two basic ways to achieve dual-band operation: single-chip method and multi-chip method. The monolithic method is to use different modes of a patch to work simultaneously or to use perturbation to form two different resonant frequencies. The multi-chip method uses multiple patches with different resonant frequencies to work, feeds power to one layer, and feeds the other layer of patches through slot coupling, thus forming two different resonance peaks. [0003] For the monolithic method, since no capacitive coupling feed is used, the bandwidth is small, the gain is low, and the circular polarization performance i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/328
CPCH01Q5/328
Inventor 刘明建林福民
Owner GUANGDONG UNIV OF TECH
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