Reconfigurable multiband tapered slot antenna

ABSTRACT In this article, a reconfigurable multiband tapered slot antenna is proposed. This antenna is able to support wideband, dual‐band, and triple‐band operations. This is achieved by incorporating T‐ and C‐ shaped resonators that are used to integrate a filtering functionality to the antenna. The behavior of the antenna can be reconfigured by activating/deactivating the different resonators by means of PIN diode switches. By activating only the T‐shaped resonator, a bandstop operation is obtained which results in a dual‐band operation, while by coupling both T‐ and C‐shaped resonators, a triple‐band operation is achieved. By deactivating all of the resonators, a wideband operation is achieved. Results show, the frequency range of the wideband operation spans from 1.04 to 3.76 GHz. In the dual‐band operation mode, the suppressed band is around 2.5 GHz. The operating frequency range of the triple‐band operation is divided into low frequency (0.97–1.24 GHz), midfrequency (1.63–2.08 GHz), and high frequency (2.64–3.71 GHz) bands. To validate the proposed approach both simulated and measured results are given and a good agreement is observed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2182–2186, 2015