Low-profile dual-polarization filtering magnetoelectric dipole antenna

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...

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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;

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