A circularly polarized antenna
A technology of circularly polarized antenna and microstrip line, which is applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., which can solve the problems of poor anti-interference ability of antenna and unacceptable antenna
Active Publication Date: 2019-01-18
BEIJING UNIV OF POSTS & TELECOMM
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[0004] During the transmission of electromagnetic wave signals, the electric field generated by the current always points in one direction. Therefore, the generated electromagnetic waves exhibit linear polarization characteristics, which makes it impossible for the antenna to receive linearly polarized electromagnetic waves perpendicular to the emission direction. Such gradient slot antennas are anti-interference Poor sex
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.
[0036] The invention will be described in detail below through specific embodiments.
[0037] figure 1 A schematic diagram of a three-dimensional structure of a circularly polarized antenna provided by an embodiment of the present invention, as shown in figure 1 As shown, the circularly polarized antenna is composed of a rectangular parallelepiped dielectric substrate, a first metal plating layer on the top layer of the dielectric substrate, and a second meta...
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The embodiment of the invention provides a circularly polarized antenna. The circularly polarized antenna comprises a dielectric substrate, a first metal plating layer positioned at the top of the dielectric substrate, and a second metal plating layer positioned at the bottom, the dielectric substrate is also provided with a first row of metal through holes and a second row of metal through holes penetrating through the dielectric substrate, the first metal plating layer, and the second metal plating layer, the first metal plating layer is provided with a firstly gradually changing slit, the second metal plating layer is provided with a second gradually changing slit, and the two gradually changing slits are symmetrical around a yoz plane and positioned between the two rows of metal through holes. According to the circularly polarized antenna, the current along the gradually changing slits generates an electric filed in the x direction in a far-field area, the current along the metal through holes generates an electric filed in the y direction in the far-field area, the amplitudes of the electric field in the x direction and the electric field in the y direction are equal, and the phase difference is 90 degrees. Therefore, the circularly polarized antenna is advantaged by circular polarization characteristics and high anti-interference capability.
Description
technical field [0001] The invention relates to the technical field of radio communication, in particular to a circularly polarized antenna. Background technique [0002] With the wide application of wireless communication, the antenna, as a key component for transmitting or receiving electromagnetic waves in radio equipment, has received more and more attention. The antenna working in the 60GHz frequency band is a millimeter-wave antenna. When working in an ultra-high-speed indoor wireless communication system environment, the ground, walls, and indoor furniture will reflect electromagnetic waves, and the resulting multipath interference will cause serious delay and distortion of the signal. Thus affecting the transmission of the signal. In the prior art, a tapered slot antenna is usually used to realize high-frequency transmission, and the tapered slot antenna has narrow lobe width and high gain characteristics, which can reduce multipath interference. [0003] A common ...
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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q15/24
CPCH01Q1/36H01Q1/38H01Q1/50H01Q15/24
Inventor 姚远程潇鹤俞俊生
Owner BEIJING UNIV OF POSTS & TELECOMM