South China University of Technology

Xiu Yin Zhang

Yong-Mei Pan

Yao Zhang

Wen Duan

Jin-Xu Xu

A filtering antenna element and a dual-band filtering antenna array using filtering antenna elements for mutual coupling suppression have been disclosed. The filtering antenna element comprises a feeding element, a sub-substrate, a sup-substrate and an air gap between the sub-substrate and the sup-substrate. A stacked patch is fabricated on a top surface of the sub-substrate, a driven patch and a ground plane are fabricated on a top surface and a bottom surface of the sub-substrate. An asymmetric E-slot is arranged on the driven patch and a shorting pin is inserted into the sub-substrate for generating radiation nulls in stopbands. The dual-band filtering antenna array is compact and needs no feeding network with an isolation of 35 dB, and is suitable for potential base station applications.

Dual-band filtering antenna array using filtering antenna elements for mutual coupling suppression

A low-profile dual-band filtering patch antenna and its application to LTE MIMO system are disclosed. By using two embedded U-shaped radiating patches and a multi-stub microstrip feed-line, two operating bands and four radiation nulls can been generated and individually controlled, the design is thus very simple and flexible. Based on the proposed low-profile dual-band filtering patch antenna, a MIMO antenna with a very low profile, low mutual coupling and low ECCs has been presented.

Low-profile dual-band filtering patch antenna

A filtering switch based on dielectric resonator is disclosed which comprising a rectangular dielectric resonator, a metal cavity in which the dielectric resonator is located, a switch circuitry and a T-shape feeding line structure. The ON- and OFF-states of the filtering switch based on dielectric resonator are realized by controlling a coupling between the dielectric resonator and the feeding line structure. EM fields of the rectangular dielectric resonator and T-shape feeding line structure have been theoretically analyzed and utilized to guide the coupling control. The results have shown low ON-state loss, high power capability and high OFF-state isolation. Transmission zeros are generated at both sides of the passband by cross coupling between dielectric resonators or between feeding line structures and coupling line structures, resulting in high skirt selectivity.

High-power filtering switch with low loss and high isolation based on dielectric resonator

A dual-polarized filtering antenna comprising a driven patch, a parasitic stacked patch and a feeding network is disclosed. Two orthogonal H-shaped feeding lines are coupled to the driven patch for realizing dual polarization. The H-shaped feeding line provides a sharp roll-off rate at the lower band-edge, whereas the stacked patch offers a radiation null at the upper stopband. As a result, a quasi-elliptic bandpass response can be achieved for both polarizations.

Growing community of inventors

Guangdong, China

Xiu Yin Zhang