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Design of reconfigurable filtering ultra-wideband antenna with switchable band-notched functions

Published online by Cambridge University Press:  18 December 2018

Hailong Yang ,
Xiaoli Xi ,
Lili Wang ,
Yuchen Zhao ,
Xiaomin Shi  and
Yanning Yuan
Hailong Yang
Affiliation:
Department of Electric Engineering, Xian University of Technology, Xian 710048, China
Xiaoli Xi*
Affiliation:
Department of Electric Engineering, Xian University of Technology, Xian 710048, China Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024, China
Lili Wang
Affiliation:
Department of Electric Engineering, Xian University of Technology, Xian 710048, China
Yuchen Zhao
Affiliation:
Department of Electric Engineering, Xian University of Technology, Xian 710048, China
Xiaomin Shi
Affiliation:
Communication Engineering Department, Xi'an Shiyou University, Xi'an, People's Republic of China
Yanning Yuan
Affiliation:
Department of Electric Engineering, Xian University of Technology, Xian 710048, China
*
Author for correspondence: Xiaoli Xi, E-mail: xixiaoli@xaut.edu.cn
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Abstract

A compact reconfigurable filtering ultra-wideband (UWB) antenna with switchable band-notched functions is proposed. The basic structure of the proposed design is a filtering slot antenna with good band-edge selectivity using stepped impedance resonator feeding line. The reconfigurability is achieved by using two microstrip lines paralleling to the feeding line and two PIN diodes. The reconfigurable structure and bias circuit of the antenna are relatively simple and are not connected to the radiation structure, so they have little negative influence on the radiation characteristics of the antenna. Total four states could be achieved by using two PIN diodes to short the microstrip lines and ground. To verify the performance of the final design, multiple measured and simulated results in frequency and time domain are studied and analyzed. The measured results agreed very well with simulation. Compared with the traditional UWB antenna, the proposed antenna has advantages in size, filtering function in-band and out-of-band, and tunable states for multiple UWB applications.

Keywords

Filtering functionnotch bandreconfigurable ultra-wideband (UWB) antenna

Information

Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 4 , May 2019 , pp. 368 - 375
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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