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Low-profile omnidirectional circularly-polarized antenna with large-axial-ratio wave beams

A circularly polarized antenna and low-profile technology, applied in the field of low-profile omnidirectional circularly polarized antennas, can solve the problems of narrower 3dB axis than beam, large volume, etc. Cleverly designed effects

Inactive Publication Date: 2017-10-20
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a low-profile omnidirectional circularly polarized antenna with a wide axial ratio beam, and solve the technical problems of the existing circularly polarized antenna with a narrow 3dB axial ratio beam and large volume

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  • Low-profile omnidirectional circularly-polarized antenna with large-axial-ratio wave beams
  • Low-profile omnidirectional circularly-polarized antenna with large-axial-ratio wave beams
  • Low-profile omnidirectional circularly-polarized antenna with large-axial-ratio wave beams

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Embodiment Construction

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0032] Such as figure 1 , 2 Shown in and 3, a kind of low-profile omnidirectional circularly polarized antenna with wide axial ratio beam, wherein: comprise dielectric substrate 1, composite vortex radiator 2 and circular grounding plate 3, described composite vortex radiator 2 and The circular grounding plate 3 is attached to the upper surface and the lower surface of the dielectric substrate 1 respectively, and the centers of the two are located on the same vertical center line; the center of the compound vortex radiator 2 and the circular grounding plate Coaxial feeding probes 4 are arranged through the centers of the floors 3 .

[0033] The composite vortex radiator 2 includes a circular patch 5 and six composite branch patches 6, and the six composite branch patches 6 are evenly arranged on and connected t...

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Abstract

The invention relates to an omnidirectional circularly-polarized antenna, specifically a low-profile omnidirectional circularly-polarized antenna with large-axial-ratio wave beams. The antenna is implemented through the following technology that the antenna comprises a dielectric substrate, a combined vortex radiator, and a circular grounding plate; the combined vortex radiator and the circular grounding plate are respectively pasted on the upper and lower surfaces of the dielectric substrate, and the centers of the combined vortex radiator and the circular grounding plate are located on the same vertical central line; the combined vortex radiator comprises a circular paster and six combined branch metal pasters; each combined branch paster comprises a vortex paster, a fan-shaped paster, and a circuit bonding pad; the central part of a convex arc-shaped edge of the outer edge of each vortex paster is provided with a vortex paster-grounding plate short circuit via hole; the center of each circular bonding pad is provided with a fan-shaped paster-grounding plate short circuit via hole. The antenna is reasonable in structure, is ingenious in design, effectively solves problems that a conventional circularly-polarized antenna is narrow in beams with the axial ratio of 3dB and is large in size, and is suitable for the wireless communication.

Description

technical field [0001] The invention belongs to the technical field of omnidirectional circularly polarized antennas, in particular to a low profile omnidirectional circularly polarized antenna with a wide axial ratio beam. Background technique [0002] Because of its advantages of reducing external interference, suppressing rain and fog, and anti-multipath reflection, circularly polarized antennas are widely used in satellite communication systems, electronic countermeasures, and navigation systems. The omnidirectional circularly polarized antenna further expands the coverage of the antenna on the basis of the former, reduces signal loss, can effectively eliminate the influence of polarization distortion, and enhances the sending and receiving capabilities of mobile devices in different sports environments. , TV broadcasting, mobile communications and other applications are of great significance. [0003] At present, a lot of research has been done on omnidirectional circu...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/24
CPCH01Q1/38H01Q1/48H01Q1/50H01Q21/24
Inventor 张文梅刘江韩丽萍刘宇峰杨荣草李莉
Owner SHANXI UNIV