Triple Band Microstrip Patch Antenna Useful for Wi-Fi and WiMAX

Abstract

In this paper, a compact microstrip patch antenna is designed having a partial ground plane with symmetrical parasitical elements, an extended microstrip line and an I-shaped patch having a rectangular slot. The size of the proposed antenna is 15 × 20 × 1.6  mm³ having a substrate of FR4 material having a relative permittivity of 4.3 and a loss tangent of 0.025. The combined effect of an extended microstrip line and a rectangular slot in I-shaped patch produces bandwidth enhancement in the design. Simulated results show that the impedance bandwidths (S11 < −10 dB) of the proposed antenna are 2.34–2.46 GHz, 4.61–5.92 GHz and 9–9.9 GHz. The peak gain of the proposed antenna is 3.0209 dB which is coming in the high-frequency band. Although the gain of the antenna is very low in the low-frequency band as the size is very small, the gain in the middle frequency band is 2.17 dB. The antenna is most suitable for Wi-Fi (2.4 GHz), WiMAX (5.8 GHz) and X band (9–10 GHz). Measured results show good agreement with the simulated result of the proposed antenna.

KEYWORDS:

• Extended microstrip
• Impedance matching
• Multiple applications
• Patch antenna
• Parasitic element
• Rectangular slot

Additional information

Notes on contributors

Vishal Asnani

Vishal Asnani is an undergraduate student pursuing BE (Hons) in electronics and instrumentation engineering from BITS Pilani, K K Birla Goa Campus, India. His major field of interest are microstrip antennas, wideband antennas, Signal and audio processing, etc. Email: [email protected]

Sudeep Baudha

Sudeep Baudha is an assistant professor in the Department of Electrical and Electronics Engineering, BITS Pilani, K K Birla Goa Campus, India. He received his MTech degree in radio frequency and microwave engineering from Indian Institute of Technology, Kharagpur (India) in 2009 and PhD degree from Indian Institute of Information Technology Design and Manufacturing (IIITDM), Jabalpur (India), in 2016. His fields of interest are microstrip antenna, planar antenna, microwave communication, etc. Corresponding author. Email: [email protected]