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CLC number: TN828.6

On-line Access: 2020-02-27

Received: 2019-09-04

Revision Accepted: 2020-01-14

Crosschecked: 2020-01-27

Cited: 0

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Citations:  Bibtex RefMan EndNote GB/T7714


Yun-fei Cao


Xiu-yin Zhang


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Frontiers of Information Technology & Electronic Engineering  2020 Vol.21 No.1 P.116-127


Filtering antennas: from innovative concepts to industrial applications

Author(s):  Yun-fei Cao, Yao Zhang, Xiu-yin Zhang

Affiliation(s):  School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, China

Corresponding email(s):   zhangxiuyin@scut.edu.cn

Key Words:  Filtering antenna, Dual-band, Antenna array

Yun-fei Cao, Yao Zhang, Xiu-yin Zhang. Filtering antennas: from innovative concepts to industrial applications[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(1): 116-127.

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%A Yao Zhang
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T1 - Filtering antennas: from innovative concepts to industrial applications
A1 - Yun-fei Cao
A1 - Yao Zhang
A1 - Xiu-yin Zhang
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 21
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EP - 127
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.1900474

A filtering antenna is a device with both filtering and radiating capabilities. It can be used to reduce the cross-band mutual coupling between the closely spaced elements operating at different frequency bands. We review the authors’ work on filtering antenna designs and three related dual-band base-station antenna arrays as application examples. The filtering antenna designs include single- and dual-polarized filtering patch antennas, a single-polarized omni-directional filtering dipole antenna, and a dual-polarized filtering dipole antenna for the base station. The filtering antennas in this paper feature an innovative concept of eliminating extra filtering circuits, unlike other available antennas. For each design, the filtering structure is finely integrated with the radiators or feeding lines. As a result, the proposed designs have the advantages of compact size, simple structure, good in-band radiation performance, and low levels of loss, and do not contain complicated filtering circuits. Based on the proposed filtering antennas, single- and dual-polarized dual-band antenna arrays were developed. Separate antenna elements at different frequency bands were used to achieve the dual-band performance. The cross-band mutual couplings between the elements at different bands were reduced substantially using the antenna inherent filtering performance. The dual-band arrays exhibited better performance as compared to typical industrial products. Some of the proposed technologies have been transferred into the industry.





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