Broadband string series-feed circular polarization patch antenna

A patch antenna and circular polarization technology, applied in the direction of antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of complex structure, narrow bandwidth, etc., achieve the reduction of profile, facilitate manufacturing and processing, and broaden the radiation gain bandwidth Effect

Pending Publication Date: 2017-06-27
XIDIAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a broadband serially-fed circularly polarized patch antenna, which aims to solve the problems of narrow bandwidth and complex structure in the existing serially-fed circularly polarized antenna

Method used

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  • Broadband string series-feed circular polarization patch antenna
  • Broadband string series-feed circular polarization patch antenna
  • Broadband string series-feed circular polarization patch antenna

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Such as Figure 1-Figure 4 As shown, the broadband series-fed circularly polarized patch antenna provided by the embodiment of the present invention includes a radiating dielectric substrate, a radiating metal patch, a serial feed network, and an adhesive dielectric substrate. The radiating dielectric substrate is a rectangular radiating dielectric substrate 1, and the The radiation metal patch is a square radiation metal patch 2, and the series feed network is composed of a re...

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Abstract

The invention discloses a broadband string series-feed circular polarization patch antenna. The broadband string series-feed circular polarization patch antenna is provided with a rectangular radiation medium substrate, wherein the rectangular radiation medium substrate comprises a small square radiation metal patch on an upper surface and a large square radiation metal patch on a lower surface, the upper and lower surface of the rectangular radiation medium substrate are respectively printed with a rectangular sheet metal and a series-feed microstrip line, a tail end of the series-feed microstrip line is connected with the rectangular sheet metal through a load resistor, and the rectangular sheet metal is provided with N sets of rectangular metal slits through etching. The broadband string series-feed circular polarization patch antenna is advantaged in that a serial traveling wave feed structure integrating the series-feed microstrip line and the load resistor is employed, an antenna feed network is simplified, and the antenna is convenient for making and processing; the two radiation metal patches with different sizes are employed to widen radiation gain bandwidth of the antenna; the two rectangular metal slits of which directions are perpendicular mutually are arranged below the large square radiation metal patch, phase difference of the two rectangular metal slits is 90 DEG, an antenna array element axial ratio is made to be a relatively small value, and thereby an antenna axial ratio bandwidth is substantially improved.

Description

technical field [0001] The invention belongs to the technical field of circularly polarized antennas, in particular to a broadband series-fed circularly polarized patch antenna. Background technique [0002] Circularly polarized antennas are widely used in various communication systems due to their many advantages. Large-capacity, high-speed wireless communication systems have high requirements for broadband antennas. Commonly used single-feed point or double-feed point circularly polarized microstrip antennas are simple in structure and easy to process, but the axial ratio bandwidth is narrow; the commonly used four-arm helical antenna has excellent circular polarization characteristics, but the antenna profile is high, difficult to process, and high in cost. . There are various types of broadband circularly polarized antennas designed to solve the above problems, among which the series-fed circularly polarized antenna is the representative. The series-fed circularly pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q1/38
CPCH01Q1/38H01Q1/50
Inventor 杨宇航郭景丽孙保华黄友火
Owner XIDIAN UNIV
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