Reconfigurable Band-Notched Compact C-shaped Printed Antenna for UWB Applications


TOKTAŞ A., YİĞİT E. , ÜSTÜN D., SABANCI K., YERLİKAYA M.

2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED), Tbilisi, Georgia, Georgia, 24 - 27 September 2018 identifier identifier

Abstract

In this study, a compact C-shaped printed antenna with reconfigurable band-notched characteristic is designed for ultra-wideband (UWB) operation. The basic structure is a C-shaped radiator with a very small size of 8x8 mm(2) fed by a microstrip transmission line (MTL) with a matching line overall on 8x26 mm(2) substrate under which a portion of 8x26 mm(2) ground conductor is used. The capability of reconfigurable band-notched characteristic is gained by inserting a pin diode between the edges of C-shaped radiator. The antenna design is printed on a double sided copper with FR4 substrate. Based on measured result, the antenna provides an impedance bandwidth of 3.1-12.9 GHz (at VSWR=2) when it operates at ON state (full UWB). At OFF state, it passes the band of 3.0-3.5 GHz and 5.6-11.7 GHz, thus stop the band of 3.5-5.6 GHz corresponding to WIMAX and WLAN standard. Therefore, the proposed UWB antenna stands out over the literature in terms of geometry's simplicity, compactness, near omnidirectional pattern, high efficiency as well as band-notched configurability.