Broadband circularly polarized filtering array antenna with sequential rotary feeding

A technology of sequentially rotating and filtering arrays, which is applied to antenna arrays that are energized separately, specific array feeding systems, antennas, etc., can solve problems such as reduced gain and poor matching, and achieve reduced structural complexity and circular polarization characteristics The effect of optimizing and broadening the impedance bandwidth

Active Publication Date: 2020-12-11
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional design methods usually design the antenna and filter as independent parts and then cascade them, or combine t

Method used

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  • Broadband circularly polarized filtering array antenna with sequential rotary feeding
  • Broadband circularly polarized filtering array antenna with sequential rotary feeding
  • Broadband circularly polarized filtering array antenna with sequential rotary feeding

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Embodiment Construction

[0042] The present invention is further analyzed below in conjunction with specific embodiments.

[0043] combine figure 1 and figure 2 , a broadband circularly polarized filter array antenna with sequential rotation feeding, including dielectric substrates S1, S2, S3, S4 and feeding structures of different thicknesses arranged in sequence from top to bottom; There is an air layer with a height h3, and the second-layer dielectric substrate S2, the third-layer dielectric substrate S3 and the fourth-layer dielectric substrate S4 are arranged in contact. A metal layer M1 of the same size is provided between the dielectric substrate S3 and the dielectric substrate S4 as a ground plane.

[0044] The dielectric substrate S1 uses a Rogers5880 dielectric substrate with a thickness of h2, the dielectric substrate S2 uses a Rogers5880 dielectric substrate with a thickness of h1, the dielectric substrate S3 uses a Rogers5880 dielectric substrate with a thickness of h1, and the dielect...

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Abstract

The invention discloses a broadband circularly polarized filtering array antenna with sequential rotary feeding. A circularly polarized antenna unit is realized by cutting opposite angles of a squarepatch and introducing degenerate mode separation; then, opening resonance rings of different sizes are etched on the surface of the patch, and gain zero points are introduced to the two sides of a working frequency band respectively to achieve good out-of-band rejection; and the 2 * 2 circularly polarized antenna array with the relative bandwidth of 43.14%, the axial ratio bandwidth of 1.71% and the highest gain of 14.64 dBi is realized by adding parasitic patches, forming T-shaped grooves and adopting a strip line probe mixed feed structure and a sequential rotary feed technology.

Description

technical field [0001] The invention belongs to the technical field of antenna design of wireless communication technology, and in particular relates to a broadband circularly polarized filter array antenna with sequential rotation feeding, which can be applied to wireless communication systems such as mobile communication, satellite communication and radar, and can be applied to current 5G Communications network. Background technique [0002] With the rapid development of wireless communication technology, circularly polarized antennas have attracted more and more attention. Compared with linearly polarized antennas, the advantages of circularly polarized antennas are that they can receive linearly polarized waves in any polarization direction, and the radiated electromagnetic waves can be Any linearly polarized antenna can receive, besides, the circularly polarized antenna has polarization rotation and handed orthogonality. These advantages make the circularly polarized an...

Claims

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Application Information

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IPC IPC(8): H01Q1/50H01Q1/38H01Q1/48H01Q15/00H01Q15/24H01Q21/00H01Q21/20
CPCH01Q1/38H01Q1/48H01Q1/50H01Q15/0053H01Q15/24H01Q21/0006H01Q21/0075H01Q21/20
Inventor 金华燕聂珊珊罗国清王文磊潘玉剑
Owner HANGZHOU DIANZI UNIV
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