Wideband filtering Yagi antenna array

ABSTRACT

A novel wideband high-gain antenna array with filtering response is presented. The proposed array consists of four Yagi antenna elements and one feeding network, which could realize signal filtering, power splitting as well as impedance transforming characteristics simultaneously. The operating mechanism is analyzed and the detailed design procedure is presented. For demonstration, a 2 × 2 array is designed at the center frequency of 3.0 GHz with the measured fractional bandwidth of 73.3%. Measured in-band maximum gain is 13.2 dB, whereas the out-of-band suppression level is better than 23.2 dB. Compared with the conventional array, the proposed filtering array shows high suppression in the stopband, good selectivity at passband edges and flat antenna gain in the passband. Simulated and measured results provide a good verification for the theoretical concepts.

KEYWORDS:

• Wideband antenna array
• Yagi antenna
• filtering power divider
• filtering array

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported in part by National Natural Science Foundations of China [No. 61327806 and No. 61422103], by National Basic Research Program of China (973 Program) under [Grant 2014CB339900, and by 863 Program under Grant 2015AA016801].

Notes on contributors

Gaoya Dong

Gaoya Dong was born in Shanxi, China, in 1993. She received the BS degree in applied physic from Xidian University, Xi'an, China, in 2015. She is currently pursuing the PhD degree of electrical engineering in Beijing University of Posts and Telecommunications, Beijing, China. Her current research interests include planar microwave power dividers, and antennas.

Weimin Wang

Weimin Wang was born in Shandong, China, in 1977. She received the BE degree in telecommunication engineering, MSc degree in electromagnetics and microwave technology and the PhD degree in electronic and information engineering from the Beijing University of Posts and Telecommunications, Beijing, China, in 1999, 2004 and 2014, respectively.

Bo Zhang

Bo Zhang was born in Shanxi, China, in 1991. He received the BS and MS Degrees all in Electronic and Information Engineering from Beijing University of Posts and Telecommunications (BUPT), Beijing, China, in 2012 and 2015, respectively, where he is currently working towards PhD degree in electrical engineering. His current research interests include planar microwave filters, power divider, antennas and power amplifiers.

Yuanan Liu

Yuanan Liu received the BE, ME and PhD degree in electrical engineering from University of Electronic Science and Technology of China, Chengdu, China, in 1984, 1989 and 1992, respectively. In 1984, he joined the 26th institute of Electronic Ministry of China to develop the inertia navigating system. In 1992, he began his first post-doctor position in EMC lab of Beijing University of Posts and Telecommunications (BUPT), Beijing, China. In 1995, he started his second post-doctor in broadband mobile lab of Department of System and Computer Engineering, Carleton University, Ottawa, Canada. From July, 1997, as professor, he is with wireless communication center of College of Telecommunication Engineering, BUPT, Beijing, China, where he is involved in the development of next-generation cellular system, wireless LAN, Bluetooth application for data transmission, EMC design strategies for high speed digital system, and EMI and EMS measuring sites with low cost and high performance.