Broad beam navigation antenna adopting electromagnetic bandgap structure and novel installation method thereof

A technology of electromagnetic bandgap structure and installation method, which is applied in the field of navigation antennas, can solve the problems of widening the beam width of antennas, etc., and achieve the effects of improving low elevation gain, facilitating design and processing, and simple structure
CN101521311BActive Publication Date: 2013-04-10BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2013-04-10

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Abstract

The invention relates to a broad beam navigation antenna adopting an electromagnetic band-gap structure and a novel installation method thereof. The method comprises the following steps: firstly, the index parameters of the antenna, such as the working frequency, the standing wave ratio, the gaining, and the like are ensured, a common patch antenna is selected or designed, and the bottom of the common patch antenna is provided with a metal floor with a proper size as a supporting structure; the parameters of the electromagnetic band-gap structure are designed by using HFSS software according to know parameters, and the electromagnetic band-gap structure is made by adopting the prior technology; the center of the electromagnetic band-gap structure is cut into a circular area, and the electromagnetic band-gap structure is pasted on the surface of a metal floor and is solidified by a conductive adhesive so that the surface of the patch antenna is parallel to the surface of the electromagnetic band-gap structure, thereby a board beam navigation antenna which adopts electromagnetic band-gap structure and the novel installation method is completely designed. The antenna made by the invention is a low elevation angle and high gain antenna, the transmission of surface waves is restrained and the low elevation angle gain of the antenna is increased by adopting the electromagnetic bandgap structure and the novel installation method thereof.
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Description

technical field

[0001] The invention relates to a navigation antenna with excellent performance at low elevation angles, in particular to a navigation antenna with high gain at low elevation angles using an electromagnetic bandgap structure and a new installation method thereof. technical background

[0002] The wide-beam navigation antenna is an antenna mainly used for receiving satellite navigation signals. It maintains good coverage in the range of 0° to 360° and elevation angle of 5° to 90°, but obtaining high power gain and circular polarization performance in the entire range of elevation angle of 5° to 90° is a difficult problem in antenna design. The feeding structure of ordinary patch antenna is simple, but affected by the surface wave, the low elevation angle gain is not high, and it is difficult to meet the requirements of satellite navigation. The electromagnetic bandgap structure is an artificial periodic structure with obvious frequency band gap characteristic...

Claims

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