A Miniaturized Band-Reject Filter Using Metamaterial Structures on Silicon Substrate for X-Band Application

ABSTRACT

This paper presents a miniature-size band-reject filter on a Coplanar Waveguide (CPW) transmission line using series connected complementary split ring resonators (CSRRs) and series capacitive gaps for X-band applications. The band-reject filter has highly miniaturized dimensions and is capable of solving almost all the basic limitations to which the conventional band-reject filters are mostly susceptible. The series connected CSRRs are etched on the signal planes of the CPW transmission line on silicon substrate enabling CMOS compatibility with planar IC technology. It is a concept resulting in higher bandwidth, low insertion loss of 0.5 dB with high rejection of 40 dB in the stop bands better than similar designs. The optimized design of the proposed device is performed using the parametric study of filter characteristics. The proposed devices RF analysis and circuit model are simulated using Ansoft High-Frequency Structural Simulator (HFSS) v13^® and Agilent Advanced Design System (ADS) 2009. Measured results are in good agreement with their simulated counterparts and the measured performance is encouraging in all respects.

KEYWORDS:

• Complementary split ring resonators (CSRRs)
• coplanar technology
• CMOS technology
• equivalent model
• metamaterial structures
• parametric study

Acknowledgment

The authors would like to acknowledge Tezpur University and IC design and fabrication Centre of the ETCE Department of Jadavpur University for providing the necessary fabrication and design facility of proposed device.

Additional information

Notes on contributors

Buddhadev Pradhan

Buddhadev Pradhan obtained his M.Tech. degree from Department of Electronics & Telecommunication Engineering, Jadavpur University (JU), Kolkata in 2012. He awarded his Ph.D. (Engg.) degree from Jadavpur University in 2017. His research interests include RF MEMS devices like as MEMS Filters, RF MEMS switches & phase shifters etc. He became a Student Member of IEEE. He served as reviewer in different internationally and nationally acclaimed journals. Email: [email protected]

Bhaskar Gupta

Bhaskar Gupta is a Professor in Department of Electronics & Telecommunication Engineering, Jadavpur University, Kolkata, India, Where he has been teaching from 1985.He was born in Kolkata in 1960 and obtained his B.E.Tel.E., M.E.Tel.E. and Ph.D. (Engg.) degrees all from Jadavpur University in the years 1982, 1984 and1996 respectively. He has published about 200 research articles in refereed journals and conferences and co-authored two books on advanced research topics, published internationally. He is a Senior Member of IEEE, Fellow of IETE, Fellow of Institution of Engineers (India) and Life Member of SEMCE(I). Email: [email protected]