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Broadband circularly-polarized panel array antenna

An array antenna and circular polarization technology, which is applied in the field of broadband circularly polarized millimeter-wave panel array antennas, can solve the problems that millimeter-wave circularly polarized antennas are difficult to take into account broadband, high efficiency, and array formation, and achieve low cost and low section effect

Active Publication Date: 2015-09-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing millimeter-wave circularly polarized antennas are difficult to take into account broadband, high efficiency and array formation, and to provide a wide-band circularly polarized panel array antenna

Method used

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  • Broadband circularly-polarized panel array antenna
  • Broadband circularly-polarized panel array antenna
  • Broadband circularly-polarized panel array antenna

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0028] Example: such as Figure 1~4 As shown, a broadband circularly polarized panel array antenna is characterized in that the first metal copper clad layer 1, the first dielectric layer 5, the second metal copper clad layer 2, and the second dielectric layer 6 are sequentially stacked from top to bottom , the third metal copper clad layer 3 , the third dielectric layer 7 , the fourth dielectric layer 8 , and the fourth metal copper clad layer 4 . The microstrip radiating unit 11 and the SIW short circuit block 12 are etched on the first metal copper clad layer 1; the first dielectric layer 5 is distributed through it, and the two ends are respectively connected with the first metal copper clad layer 1 and the second metal copper clad layer 2 connected metallized holes 51 of the first type, which are located directly below the SIW short...

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Abstract

The invention belongs to the technical field of design and manufacture of millimeter-wave circularly-polarized antennas, aims to solve the problem of difficulty in integration of broadband, high efficiency and arraying of existing millimeter-wave circularly-polarized antennas, and provides a broadband circularly-polarized panel array antenna. The broadband circularly-polarized panel array antenna has the advantages that a novel 90-degree phase delay line is used for feed of a cross recess, four parasitic patches added above the cross recess are used for improving antenna unit gain and 3dB axial ratio bandwidth, and the designed 90-degree phase delay line has three independent branches which are used for phase delay, amplitude compensation and matching adjustment respectively; a group of short-circuit metal holes are designed beside a strip line to effectively inhibit spreading of a TEM (transverse electromagnetic) mode outside a feed network area, unit cross coupling is reduced greatly, and arraying performance is guaranteed; the antenna made of a multilayer PCB (printed circuit board) has the advantage of low cost and is applicable to millimeter-wave large-scale circularly-polarized arraying, and the problem of difficulty in integration of circularly-polarized antenna efficiency and the axial ratio bandwidth on millimeter-wave frequency bands is solved.

Description

technical field [0001] The invention belongs to the technical field of design and manufacture of millimeter-wave circularly polarized antennas, and in particular relates to a wide-band circularly polarized millimeter-wave panel array antenna. Background technique [0002] In a wireless communication system, the circular polarization working mode has anti-multipath effect, and compared with the linear polarization, no polarization adjustment device is needed. With the increase of wireless communication frequency, the application requirements of millimeter-wave circularly polarized antennas are becoming increasingly strong. [0003] There are mainly three ways to implement circularly polarized antennas: single-feed, multi-feed, and external circular polarizers. The feeding network of the single-feed antenna is simple, and it is easy to realize a compact and high-efficiency array. The disadvantage is that the 3dB axial ratio bandwidth of the single-feed circularly polarized an...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/06H01Q13/08H01Q21/00
Inventor 程钰间吴杰刘小亮薛飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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