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Broadband circularly polarized planar antenna array applied to millimeter wave communication system

A communication system, planar antenna technology, applied in antenna arrays, antennas, slot antennas, etc., can solve the problems of circularly polarized antennas such as narrow axial ratio bandwidth and impedance matching bandwidth, and achieve easy mass production, compact structure, wide axis than the effect of bandwidth

Pending Publication Date: 2022-04-12
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to propose a circularly polarized planar antenna array with millimeter wave broadband for the application requirements of the current millimeter wave communication system. Impedance matching bandwidth is relatively narrow

Method used

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  • Broadband circularly polarized planar antenna array applied to millimeter wave communication system
  • Broadband circularly polarized planar antenna array applied to millimeter wave communication system
  • Broadband circularly polarized planar antenna array applied to millimeter wave communication system

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with specific embodiments. The following examples are only used to more clearly illustrate the technical solution of the present invention, rather than limitation of the present invention.

[0048] like figure 1 As shown, the ultra-wideband planar antenna array for millimeter wave communication includes the antenna body and the feed network.

[0049] The antenna body is composed of 8×8 antenna elements arranged at equal intervals in the two-dimensional direction, and the interval d=4.8mm.

[0050] like figure 2 As shown, the feed network is a parallel feed network with 1 input and 64 outputs, and the output ports of the feed network have equal amplitudes and phases. The output port of the feed network is connected to the input port of the microstrip feeder 7 .

[0051] In this embodiment, the first and second dielectric substrates are Rogers RO3003, the adhesive layer is Rogers Ro4450F, and the in...

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Abstract

The invention discloses a broadband circularly polarized planar antenna array applied to a millimeter wave communication system, which comprises an antenna body and a feed network, and is characterized in that the antenna body is formed by equidistantly arranging a plurality of antenna units in a two-dimensional direction; the antenna unit sequentially comprises a circularly polarized radiator, a first dielectric substrate, a bonding layer, a metal ground, a second dielectric substrate and a microstrip feeder from top to bottom; the circularly polarized radiator is connected with the metal ground through four metal holes penetrating through the first dielectric substrate and the bonding layer; the circularly polarized radiator comprises two pairs of orthogonal dipoles and is connected with the metal ground through four metal holes penetrating through the first dielectric substrate and the bonding layer; each pair of dipoles comprises two monopoles which are symmetrical around the center; the two pairs of dipoles are different in size, and the design enables the currents of the two pairs of orthogonal dipoles to show a 90-degree phase difference, thereby generating circular polarization radiation. The circular polarization performance is improved by loading a thin strip-shaped branch knot on a long dipole arm.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a broadband circularly polarized planar antenna array applied to a millimeter wave communication system, which can be used as a receiving and transmitting antenna for a medium and long-distance millimeter wave communication system and a satellite communication system. Background technique [0002] As a component for transmitting and receiving electromagnetic wave energy, antennas are widely used in various communication systems. Circularly polarized (CP) antennas are widely demanded due to their advantages in suppressing multipath interference and reducing polarization mismatch. In satellite communications, in order to overcome the effect of Faraday rotation caused by the ionosphere, the antenna must use circular polarization. Due to these characteristics, CP antennas are becoming key to many current and future wireless communication systems. Due to the advantages of the Sub-6GH...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q13/10H01Q21/00
Inventor 范奎奎谭青权罗国清
Owner HANGZHOU DIANZI UNIV
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