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High-contact-ratio gain directional diagram circularly polarized antenna

A circularly polarized antenna and coincidence technology, which is applied in the direction of antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of low gain, high gain, asymmetry in the circumferential direction of the projectile antenna gain pattern, etc., and achieve widening Bandwidth, the effect of suppressing distortion

Inactive Publication Date: 2017-02-22
SPACE STAR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a circularly polarized antenna with a high coincidence degree gain pattern, which solves the technical problem that the gain pattern of the projectile antenna is asymmetrical in the circumferential direction, and the gain pattern will have a high gain on one side and a low gain on the other.

Method used

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  • High-contact-ratio gain directional diagram circularly polarized antenna
  • High-contact-ratio gain directional diagram circularly polarized antenna
  • High-contact-ratio gain directional diagram circularly polarized antenna

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Embodiment Construction

[0031] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. The following description includes various specific details to aid in understanding, but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0032] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art tha...

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Abstract

The invention discloses a high-contact-ratio gain directional diagram circularly polarized antenna. The high-contact-ratio gain directional diagram circularly polarized antenna comprises an antenna unit, an antenna feed network and an antenna bottom plate, wherein the antenna unit and the antenna feed network are arranged on the upper surface and the lower surface of the antenna bottom plate respectively. The antenna also comprises a double-square-shaped groove structure piece, wherein the antenna bottom plate is arranged on the double-square-shaped groove structure piece. The antenna adopts the double-square-shaped groove structure to load, the double-square-shaped groove piece adopts a double-square-shaped deep groove structure, the induced current of the antenna enters the double-square-shaped deep groove when being spread along the surface of a carrier, and the induced current cancels out each other or is reduced, so that distortion caused by the fact that the gain directional diagram is influenced by an elastomer after two antennas are combined is effectively inhibited. The problem that the gain directional diagram is asymmetrical in the circumferential direction of the elastomer, that is, the gain on one side is high and the gain on the other side is low, is solved. The antenna provided by the invention feeds by four feed points, and the bandwidth of the antenna is effectively enlarged.

Description

technical field [0001] The invention relates to the technical field of data link communication antennas, in particular to a circularly polarized antenna with a high coincidence degree gain pattern. Background technique [0002] During the flight of the projectile, due to the spin of the projectile, four antennas must be distributed on a circle on the surface of the projectile, and the uninterrupted communication with the ground command equipment can be realized through switch switching. Among the four antennas distributed along the circumference, the first and third quadrant antennas work at the F1 frequency point, and the second and fourth quadrant antennas work at the F2 frequency point. The four-quadrant antenna is connected to the power amplifier 2 after being combined by a power divider. The gain patterns of the 1st and 3rd quadrant antennas and the 2nd and 4th quadrant antennas will be affected by the projectile body, and will be distorted after being combined by a po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50
Inventor 李航朱瑞龙郭萌齐欢欢
Owner SPACE STAR TECH CO LTD
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