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Low-profile dual-polarization filtering magnetoelectric dipole antenna

A dipole antenna, dual-polarization technology, applied in the field of radio frequency communication, can solve the problems of difficult miniaturization, complex structure, narrow bandwidth, etc., and achieve the effects of good broadband radiation characteristics, low cost and simple structure

Pending Publication Date: 2019-06-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The low-profile dipole antenna in the prior art is realized by using two orthogonal H-shaped feed lines and a laminated patch. The antenna has a lower profile, only 0.09 wavelength, but narrower bandwidth, Only 11%
There is also a low-profile dipole antenna consisting of four square radiating patches etched with U-shaped and square slits, four rectangular metal short walls, two crossed r-shaped feed lines, and a box-shaped reflector. The structure is more complicated and not easy to implement. miniaturization;

Method used

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  • Low-profile dual-polarization filtering magnetoelectric dipole antenna
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Examples

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Embodiment

[0030] Such as figure 1 As shown, a low-profile dual-polarized filter magnetoelectric dipole antenna includes an upper dielectric substrate and a lower dielectric substrate separated by a certain distance between two layers, the upper surface of the upper dielectric substrate is printed with a radiator structure, and the lower dielectric substrate Substrate printed slot-coupled feed network structure, using the slot-coupled feed network with fusion filtering function to excite the radiator structure with low profile and high selective filter response, resulting in good broadband radiation characteristics and high roll-off band-pass filter effect.

[0031] Such as figure 2 As shown, the radiator structure includes four parasitic patches 3 loaded with symmetrical slits 1 and short-circuit probes 2, and the four parasitic patches form a rectangular structure. The symmetrical slits in this embodiment are placed on each parasitic On the patch, there are two symmetrical gaps about...

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PUM

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Abstract

The invention discloses a low-profile dual-polarization filtering magnetoelectric dipole antenna, and the antenna comprises an upper dielectric substrate and a lower dielectric substrate. A radiator structure is printed on the upper surface of the upper dielectric substrate, and a gap coupling feed network structure is printed on the lower dielectric substrate, wherein the radiator structure comprises four parasitic patches loaded with symmetrical gaps, and the parasitic patches are loaded with short-circuit probes. The gap coupling feed network structure comprises two groups of orthogonally arranged Y-shaped feed lines and a cross-shaped gap, and the cross-shaped gap is printed on a metal floor. The novel slot structure parasitic on the radiator increases the bandwidth and introduces a high-roll-off edge filtering effect, and the gap coupling feed network with a filtering function is combined to realize a good band-pass filtering characteristic and hardly introduce additional insertion loss.

Description

technical field [0001] The invention relates to the field of radio frequency communication, in particular to a low-profile dual-polarization filter magnetoelectric dipole antenna. Background technique [0002] In recent years, the rapid development of modern wireless communication systems requires low-profile antennas with high performance. A multi-band base station is a necessity for mobile communication, and the requirements for mobile communication are very high. The strong mutual coupling between antenna elements leads to a sharp degradation of the radiation pattern. To solve this problem, there are many typical methods, such as connecting a duplexer with the full-band antenna array, or using a decoupling network between different array elements to enhance port-to-port isolation. However, the extra units required by these approaches inevitably increase the complexity of the feeding network and introduce additional insertion loss. Recently, filtered antenna elements hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q9/16H01Q15/00
CPCH01Q21/26H01Q1/38H01Q1/50H01Q9/16
Inventor 章秀银杨圣杰张志杰潘咏梅曹云飞张垚
Owner SOUTH CHINA UNIV OF TECH
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