Reconfigurable Corner Truncated Square Microstrip Patch Antennas for Wireless Communication Applications

ABSTRACT

Reconfigurability of the radiation characteristic is one of the recent significant developments associated with the characterization of microstrip patch antennas for wireless communication systems. This paper presents, in an exhaustive and comprehensive form, the recent results for various novel reconfigurable microstrip antenna topologies involving corner truncations and ring slot loading, coupled with PIN diode switching mechanism. These designs exhibit the functions of polarization reconfiguration, polarization, and frequency reconfiguration with an attractive single layer patch and easily realizable practical structure. Emphasis is placed on design, simulation, and experimental results of each of the proposed geometries illustrating the antenna versatility in several applications.

KEYWORDS:

• Circular polarization
• CPW-to-Slotline feed
• PIN diode switch
• Polarization reconfigurable
• Reconfigurable antenna

Acknowledgment

The authors wish to thank Dr. D.R. Jahagirdar, Sc-G, DRFS, RCI, DRDO, Hyderabad, for providing the Antenna Test Facility for measuring the characteristics of proposed antenna.

Additional information

Notes on contributors

Anantha Bharathi

Anantha Bharathi was born in Telangana, India, in 1978. She completed BTech degree with distinction in electronics & communication engineering (ECE) from Jawaharlal Nehru Technological University Hyderabad (JNTUH) in 2001 and ME in microwave and radar engineer from University College of Engineering, Osmania University, Hyderabad, Telangana, India, in 2004. She is pursuing PhD in the Dept. of ECE, JNTUH, Hyderabad. She is presently working as an Assistant Professor in ECE Dept., University College of Engineering, Osmania University, Hyderabad, India. She has 13 years of teaching experience. Her research interests include antenna theory, reconfigurable antennas, radar systems, microwave and RF circuits, and Ultra wideband (UWB) antennas. She is a Member of IEEE and IETE.

Lakshminarayana Merugu

Dr Merugu Lakshminarayana did BTech in electronics and communication engineering (ECE) from JNTU, Hyderabad, in 1978, and MTech in microwave and radar engineering from IIT Kharagpur in 1980. While in service in DRDO, he did PhD from Queen’s University of Belfast, United Kingdom, on Commonwealth Fellowship during 1988–1991. He joined Defence Electronics Research Laboratory, DLRL, DRDO, as Scientist “B” in Jan 1981 and retired as Scientist “H” in Apr 2015. Over 34 years in DRDO, he was responsible for design and development of antennas and subsystems and systems for electronic warfare. Dr. Merugu is a Senior Member of IEEE, Fellow of IETE (India), Fellow of Institute of Engineers (IE), Member of AOC, and a Member of ACM. His research interest includes antennas, microwave components, and advanced electronic warfare systems. Email: [email protected]

P. V. D. Somasekhar Rao

P V D Somasekhar Rao obtained his BE degree in electronics & communication engg., from Sri Venkateswara University College of Engg., Tirupati (1977), and MTech degree in microwave and radar engg., from I.I.T., Kharagpur, India (1979). He earned his PhD degree in electronics and communication engg., from I.I.T. Kharagpur. Dr Rao worked at Radar Centre, I.I.T. Kharagpur, and Tata Institute of Fundamental Research (TIFR/ RAC Group), Ooty. Later, he joined as the Faculty of ECE Dept. of Jawaharlal Nehru Technological University Colleges of Engineering, at Anantapur and Hyderabad. He has recently retired as Professor from Dept. of ECE, JNTUH College of Engg., Hyderabad. Presently, he is with G Narayanamma Institute of Technology & Science, Hyderabad, as Professor of ECE and Dean of Academics. He is a Sr. Member of IEEE, Life Member of ISTE (India), and Fellow of IETE (India). Email: [email protected]