Electromagnetically Coupled Circularly Polarized Modified Triangular Microstrip Antenna

ABSTRACT

Modified design of triangular-shaped microstrip antenna is proposed for circular polarized response which yields an axial ratio bandwidth of 68 MHz (∼5%) in the L-band. Furthermore, its electromagnetically coupled stacked design is presented, which yields enhanced impedance and axial ratio bandwidth of more than 1100 (∼70%) and 90 MHz (>7%), respectively. A single and stacked antenna offers a broadside pattern with a peak gain of 9 dBi. As a part of the design procedure, resonant length formulation at patch modes is presented. This serves as a guideline in the re-designing of similar antenna in a given frequency spectrum. Theoretical results have been verified experimentally with a good agreement.

Keywords:

• Circularly polarized microstrip antenna
• Electromagnetic coupling
• Modified triangular microstrip antenna
• Wide band response

Additional information

Notes on contributors

Amit A. Deshmukh

Amit A Deshmukh obtained his BE (electronics) from VIT, Pune University in 1997. He obtained his MTech degree in 2000 and PhD in 2004, from the Department of Electrical Engineering, IIT Bombay. He is working as professor and head of the Department of EXTC at D J Sanghvi College of Engineering, Vile – Parle (W), Mumbai, India.

Akshay V. Doshi

Akshay V Doshi completed his BE and ME in electronics and telecommunication engineering from the University of Mumbai. His thesis work during master's program was on modified shapes' circularly polarized microstrip antennas. Email: [email protected]

K. P. Ray

K P Ray obtained his MTech in microwave electronics from the University of Delhi and PhD from the Department of Electrical Engineering, IIT Bombay. He joined SAMEER (TIFR) in 1985 and have been working in the areas of RF and microwave systems/components and developed expertise in the design of antenna elements/arrays and high-power RF/microwave sources for RADAR and industrial applications. He has successfully executed over 40 projects sponsored by government agencies/ industries in the capacity of a designer, a chief investigator and a project manager. He was guest/invited/adjunct Faculty in the Electrical Department at IIT Bombay, University of Mumbai and CEERI (CSIR), Pilani, for post graduate courses. Since November 2016, he has been working as professor and head of the Department of Electronics Engineering at DIAT, Pune. He has co-authored a book with Prof G Kumar for Artech House, USA, and published over 300 research papers in international/national journals and conference proceedings. He holds three patents and filed three patents. He has been in an advisory capacity for many international/ national conferences, engineering colleges, chaired many sessions and delivered several invited talks. He has been on the Editorial Board of International Journal on RF and Microwave Computer-Aided Engineering, John Wiley and a Reviewer of many international journals. He is a senior member of IEEE (USA), a fellow of IETE and a life member of Instrument Society of India and Engineers of EMI/EMC Society of India. Email: [email protected]