Gain and Bandwidth Enhancement of Microstrip Patch Antenna for WiMAX and WLAN Applications

Abstract

A high-gain broadband microstrip patch antenna using a PTFE substrate of dielectric constant 2.4 with a modified radiating patch is proposed. Two different shapes of ground planes (rectangular and circular) have been used under the proposed radiating patch to enhance the antenna gain. The lateral dimensions of the proposed patch are 0.52λ₀× 0.51λ₀, where λ₀ is the free space wavelength at f₀ = 5.65 GHz. Here a total of five slits and a slot are embedded at the optimum position on the proposed patch. The effects of each slits on bandwidth and gain are demonstrated. The covered frequency band is 2 GHz (5.5–7.5 GHz). The achieved peak gains are 7 dBi at 5.65 GHz and 9 dBi at 7.5 GHz. The percentage bandwidth of 30.77 is achieved. It may be used in industrial, scientific and medical band, WLAN (5.8 GHz), WiMAX, and satellite communication applications.

KEYWORDS:

• Broadband and high gain
• Microstrip patch
• WiMAX
• WLAN

Additional information

Notes on contributors

K. Mondal

Kalyan Mondal received his PhD degree from Kalyani University in 2018. He obtained his ME and BTech degrees in electronics and communication engineering from the Indian Institute of Engineering Science and Technology, Shibpur, former BESUS, Howrah, India in 2011 and Kalyani Govt. Engineering College, West Bengal, India in 2008, respectively. His research interests are microstrip patch antennas and FSS. He has contributed more than 30 research articles in different reputed journals and conferences.

P. P. Sarkar

Partha Pratim Sarkar obtained his PhD in engineering from Jadavpur University in the year 2002. He obtained his ME from Jadavpur University in the year 1994. He earned his BE in electronics and telecommunication engineering from Bengal Engineering College (presently known as IIEST, Shibpur) in the year 1991. He is presently working as a professor in the Department of Engineering and Technological Studies, University of Kalyani. His area of research includes microstrip antenna, microstrip filter, frequency selective surfaces, and artificial neural network. He has contributed numerous (more than 250 publications) research articles in various journals and conferences of repute. He is a life fellow of IETE, and IE (India). Email: [email protected]