Four-leaf-clover-shaped broadband circular-polarized planar antenna

A flat antenna and four-leaf clover technology, applied in the direction of antenna, antenna grounding switch structure connection, radiating element structure and other directions, can solve the problems of heavy metal back cavity, high profile, complex structure, etc., and achieve high machining accuracy and mechanical strength. High, low profile effects

Active Publication Date: 2017-02-08
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

[0003] Among them, the cavity-backed helical antenna has the advantage of wide bandwidth, but its profile is high, the structure is complex, and the metal back cavity is heavy.
[0004] Single-point fed microstrip circularly polarized antenna has low profile but extremely narrow bandwidth
[0005] Doubly-fed or quad-fed circularly polarized patch antennas with phase-shifting networks have a low profile, but the mechanical reliability of the feed structure is not high

Method used

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  • Four-leaf-clover-shaped broadband circular-polarized planar antenna
  • Four-leaf-clover-shaped broadband circular-polarized planar antenna
  • Four-leaf-clover-shaped broadband circular-polarized planar antenna

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Embodiment Construction

[0037] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0038] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0039] figure 1 It is a schematic diagram of the overall structure of the present invention. The antenna is formed by bonding and pressing three layers of dielectric sheets, namely: an upper dielectric substrate 1 , a dielectric support plate 2 , and a lower dielectric substrate 3 . The medium support plate 2 is bonded between the upper dielectric substrate 1 and the lower dielectric substrate 3 .

[0040] The phase-shifting feed network 4 is arranged on the lower surface of the lower dielectric su...

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Abstract

The invention discloses a four-leaf-clover-shaped broadband circular-polarized planar antenna, relates to the technical field of wireless communication and aims to provide a broadband circular-polarized planar antenna which is high in mechanical reliability, high in processing precision and low in cost. The four-leaf-clover-shaped broadband circular-polarized planar antenna comprises an upper medium substrate, a medium support plate and a lower medium substrate, wherein the medium support plate is glued between the upper medium substrate and the lower medium substrate. The four-leaf-clover-shaped broadband circular-polarized planar antenna further comprises a phase-shift power feeding network arranged on the lower surface of the lower medium substrate, a four-leaf-clover-shaped radiation paster including four metallic pasters, two coupling arms, a metallic floor positioned between the medium support plate and the lower medium substrate, and six short-circuited through holes, among which four are respectively and electrically communicated with the four metallic pasters and the metallic floor, and the other two are respectively and electrically communicated with the two coupling arms and two output ends of the phase-shift power feeding network.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a Ku-band mobile communication antenna. Background technique [0002] The existing Ku-band mobile communication antennas include cavity-backed helical antennas, single-point fed microstrip circularly polarized antennas, and double-feed or quad-feed circularly polarized patch antennas with phase-shifting networks. [0003] Among them, the cavity-backed helical antenna has the advantage of wide bandwidth, but its profile is high, the structure is complex, and the metal back cavity is heavy. [0004] The single-point fed microstrip circularly polarized antenna has a low profile but an extremely narrow bandwidth. [0005] Doubly-fed or quad-fed circularly polarized patch antennas with phase-shifting networks have a low profile, but the mechanical reliability of the feed structure is not high. Contents of the invention [0006] The technical problem to be solved by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q13/08
CPCH01Q1/38H01Q1/50H01Q13/08
Inventor 李洋陈晋吉冷国俊
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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