Aperture coupled dual ground back FED s‐slot rectangular microstrip antenna for wide band operation

Abstract

relatively wide bandwidths are 360 and 500 MHz, respectively. In addition, the attenuation in both stopbands as well as the passband return loss values are well represented in the measurements and agree well with simulations. Thus, the experimental results verify the simple design approach and give rise to filter designs involving multiple stopbands. CONCLUSIONA dual-stopband SIW filter based on quarter-wavelength Hplane stubs is presented. The initial design uses six shunt LC circuits that are capable of producing three TZs in each stopband. The acceptable accuracy of the prototyped dual-stopband filter's response compared to that of simulations verifies the reliability of the design and demonstrates a viable option for dual-stopband filters in SIW technology. REFERENCES 1. R.J. Cameron, M. Yu, and Y. Wang, Direct-coupled microwave filters with single and dual stopbands, IEEE Trans Microwave Theory Tech 53 (2005), 3288-3297. 2. K.S. Chin, J.H. Yeh, and S.H. Chao, Compact dual-band bandstop filters using stepped-impedance resonators, IEEE Microwave Wireless Compon Lett 17 (2007), 849-851. 3. J. Wang, H. Ning, Q. Xiong, M. Li, and L. Mao, A novel miniaturized dual-band bandstop filter using dual-plane defected structure, Prog Electromagn Res 134 (2013), 397-417. 4. K. Rambabu, M.Y. Chia, K.M. Chan, and J. Bornemann, Design of multiple-stopband filters for interference suppression in UWB applications, IEEE ABSTRACT: This article presents an aperture coupled dual ground back fed rectangular microstrip antenna for wideband operation. The bandwidth is enhanced by varying the width of S-shaped slot placed on the patch and the gap between the feed line on the ground plane of the antenna. The proposed antenna operates between 4 and 16 GHz of frequency range and gives a peak gain of 4.32 dB. The enhancement of bandwidth does not alter the nature of broadside radiation characteristics. The experimental and simulated results are in good agreement with each other. Design concepts of the antenna are given. The experimental results are presented and discussed. The proposed antennas may find applications in WiMax of IEEE802.16d, HIPERLAN/2 and radar communication systems.