Design and Development of Cavity-Backed Reconfigurable Square Spiral Antenna

ABSTRACT

The paper presents design, simulation and experimental results for the reconfigurable square spiral antenna. This antenna is reconfigurable for two bands: band-I is 0.4–3 GHz which covers GSM, CDMA, Wi-Fi, multipoint communication system and band-II is 4.4–5.9 GHz which covers Wi-Max, 802.11Y, WLAN and 802.11a/h/j/n/ac standards. The antenna can be tuned to other aerospace and electronic warfare applications. This antenna structure offers a good radiation efficiency as the cavity is filled with low dielectric constant material and has high gain and directivity. PIN diodes have been used to achieve the reconfigurability.

KEYWORDS:

• Cavity-backed
• PIN diode
• Reconfigurable
• Spiral antenna

Acknowledgements

The authors wish to gratefully acknowledge The Centre for Excellence in Microwave Engineering (CEME) of Osmania University and Astra Microwave Products Limited (AMPL), Hyderabad, India for providing the facilities.

Additional information

Notes on contributors

D. Rama Krishna

D. Rama Krishna received his Bachelor of Technology (B.Tech) in Electronics and Communications Engineering from Sri Krishna Devaraya University, Ananthapur, Andhra Pradesh, India and obtained his Master of Engineering (M.E) and Doctor of Philosophy (Ph.D) in Electronics and Communication Engineering from Osmania University, Hyderabad, Telangana, India. He joined as an Assistant Professor in the department of ECE, University College of Engineering, Osmania University in the year 2007, presently he is working as Associate Professor and serving as Chairperson Board of Studies (Autonomous) for the Department of ECE, University College of Engineering, Osmania University, he has taught several undergraduate and graduate courses in Communication Engineering area and supervised nearly 20 UG and 50 PG student projects in the area of RF and Microwave communication systems. He successfully completed 03 sponsored research projects in the area of RF and Microwave Engineering and published 30 research papers in International Journals/ Conference Proceedings. His research areas of interest include Multifunction Antennas & Antenna Systems and Microwave & millimeter Wave Integrated Circuits. He Worked as Summer Faculty Research Fellow at Indian Institute of Technology (IIT) Delhi under Continuing Education Programme from May 2012 to July 2012.

He is a Life Member of Institution of Engineers (IE), Institution of Electronics and Telecommunication Engineers (IETE), Indian Society for Technical Education (ISTE), Indian Society of Systems for Science and Engineering (ISSE), Institute of Smart Structures and Systems (ISSS) and Member of Institute of Electrical and Electronics Engineers (IEEE), USA. He served as Secretary/Treasurer for the MTT/AP/EMC Society Joint Chapter of IEEE Hyderabad Section from January 2013 to December 2016.

V. M. Pandharipande

V.M. Pandharipande obtained his B.E. Degree from Visvesvaraya National Institute of Technology, India in 1970 and M.Tech., Ph.D. (Electronics & Communication Engineering) from Indian Institute of Technology Kharagpur, India in 1972 and 1979 respectively He worked as Scientific Officer in Tata Institute of Fundamental Research, Mumbai (1972–1974), faculty in Radar and Communication Centre, I.I.T. Kharagpur (1974–1983). He joined Department of Electronics & Communication Engineering of Osmania University, Hyderabad as Professor in 1983 and served as Head of the Department, Chairman Board of Studies, Dean Faculty of Engineering, Coordinator of two World Bank Projects, Director Curriculum Development and Accreditation Audit Cell. He established the Centre of Excellence in Microwave Engineering with collaboration from Industry-Astra Microwave Products Limited and served as the Director of the Centre. He retired as Professor Emeritus from Osmania University in January 2011 and served as Vice-Chancellor of Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India from January 2011 to March 2014, at present he is serving as Honorary Director of CEME and Adjunct Professor at Department of ECE, Osmania University, Hyderabad, India.

He has completed many sponsored projects in the area of phased Array Antennas, Electronically Scanned Radar System, Printed Antennas for Satellite and Airborne Applications, Digital Beam forming in phased Arrays, Strip, Micro strip passive components. He has nearly 160 research papers published in National and International Journals/ Conference Proceedings. He has received Best Teacher Award, Life Time Achievement Award, Sir Visvesvaraya Award, IETE Award, ISTE National Award and Dewang Mehta Business School Award for Contribution in Research & Teaching in Microwave Engineering in particular and Electronics & Communication Engineering in general. He is Fellow of Institution of Electronics & Telecommunication Engineering, AP Academic of Sciences & Life Member of ISTE, Fellow of Institute of Engineers. E-mail: [email protected]