A method for optimizing the performance of a four-armed helical antenna
A four-arm helix and antenna technology, which is applied in the field of satellite navigation system antennas, can solve problems such as affecting performance, easy deformation of the helix, and difficulty in ensuring the consistency of the helix, and achieve stable performance, good consistency, and stable structure.
Active Publication Date: 2022-07-15
JIAXING GLEAD ELECTRONICS CO LTD
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Problems solved by technology
[0003] However, in order to achieve the characteristics of dual-frequency operation, the existing four-arm helical antenna generally uses a quarter-wavelength helix, but the overall performance of the quarter-wavelength antenna is slightly worse than that of the half-wavelength antenna. antenna, although there is a Chinese patent with the notification number CN1037302C disclosing a grounded multi-arm helical antenna, which realizes the characteristics of dual-frequency operation through two sets of four-arm helical antennas using one-half wavelength, but the technical scheme Among them, the structure of the four-arm helical antenna is simple. Only the support rod in the middle and the connecting seat support two sets of helixes. Easily deformed, affecting performance
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[0019] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0020] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and / or combinations thereof.
[0021] Furthermore, in the description of the present invention, it should be understood that the...
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The invention relates to a method for optimizing the performance of a four-armed helical antenna. The antenna includes a base, a first rotating body and a second rotating body. The first rotating body and the second rotating body each include a top end surface, and a plurality of The lower spiral arm extends in a spiral shape, the first rotating body and the second rotating body are sleeved or integrally formed, and the spiral arms of the first rotating body and the second rotating body are alternately arranged in turn, and the surface of the spiral arm is set. There is a downward spiral metal wire, and the metal wire extends to the top end face to intersect, the lower part of the spiral arm is arranged on the base, the base is provided with a grounding metal surface, and the lower part of the metal wire is connected with the grounding metal surface. In the present invention, the metal wires are arranged on the rotating body, so that the consistency of each metal wire, that is, the helical wire during production is better, and because the helical wire is supported by the rotating body, the structure is more stable in the later use process, and the performance is better. Stablize.
Description
technical field [0001] The present invention relates to the technical field of satellite navigation system antennas, in particular to a method for optimizing the performance of a four-armed helical antenna. Background technique [0002] In mobile satellite communication earth stations and satellite navigation equipment, the antenna is required to have wide beam characteristics in order to keep the satellite within the coverage of the antenna beam while in motion. At the same time, the antenna must have broadband (or dual-band operation) characteristics, so that the receiver and transmitter can share a pair of antennas. At present, people usually use a four-armed helical antenna as a receiving antenna of a satellite positioning system. The current amplitudes of the feeding ends of the four helical arms are equal, and the phases are different by 90°. It has a cardioid pattern, a good front-to-back ratio and an excellent wide-beam circular polarization characteristic, which is...
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IPC IPC(8): H01Q1/12H01Q1/36H01Q1/48H01Q1/50
CPCH01Q1/12H01Q1/362H01Q1/48H01Q1/50
Inventor 徐广成葛伟平王仕文
Owner JIAXING GLEAD ELECTRONICS CO LTD