Triple Band Compact Monopole Antenna for Applications Like Bluetooth, WiMAX and WLAN

Abstract

In this work, a novel triband antenna is developed for wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), and Bluetooth application. The proposed antenna is printed on a low-cost FR-4 substrate and has an overall size of 25 mm × 40 mm × 1.6 mm. Coplanar waveguide (CPW) line with characteristic impedance of 50 Ω is used as feed for the designed antenna. A prototype of this antenna is fabricated and tested to validate the simulation results. The measured result shows that the antenna has the triple-band response with frequency bands that correspond to S₁₁<−10 dB 2.36 − 3.17, 3.8 − 4.35, and 5.69 − 6.02 GHz. The measured gains of the antenna at resonant frequencies of 2.61, 4.115 and 5.85 GHz are 0.756, 0.925 and 1.589 dBi, respectively. Maximum decrement in measured gain is only 0.671 dB which is attributed to losses from connectors and cables. A novel approach, based on a combination of a cap-shaped ground plane and gap coupling technique in the form of an interdigital capacitor (IDC), is used to achieve the characteristic of triple frequency bands. Finally, the utility of the proposed antenna is checked with a four-element MIMO antenna.

Keywords:

• Bluetooth
• Monopole
• Tripleband
• Wireless local area network (WLAN)
• Worldwide interoperability for microwave access (WiMAX)

Additional information

Notes on contributors

Kailash Chandra

Kailash Chandra received his Bachelor of Engineering in electronics and communication engineering from GLA Mathura, India in 2002. He obtained MTech in VLSI design from UPTU Lucknow, 2011 and he is pursuing his Phd from Dr A K T U, Lucknow, UP.

Mahendra Kumar

Mahendra Kumar is presently working as associate professor in Electronics & Communication Engineering Department, Bundelkhand Institute of Engineering and Technology (BIET), Jhansi (UP), India. His interests are in multiple access schemes in the design of microstrip antennas for various applications. He published many research papers in different international journals and conferences.Email: [email protected]

Madhur Deo Upadhayay

Madhur Deo Upadhayay was born in India in 1979. He received bachelor of engineering (Electronics & Communication) and Master of Engineering (Microwave Communication and Radar Engineering) from Dr Bhimrao Ambedkar University Agra, India in 2002 and 2004, respectively. He earned his PhD (Microwave Engineering) degree from CARE, Indian Institute of Technology, Delhi, India in 2014. He has worked as lecturer from 2004 to 2006. He joined Electrical Engineering Department, Shiv Nadar University, India as assistant professor in 2013 and he continues as associate professor from 2019. He published 19 articles in journals, 62 papers in conferences (majorly IEEE). He has one patent. He has supervised two PhD thesis scholars. He is the recipient of CSIR International Travel Grant (2009), DST International Travel Support (2014) and MHRD Govt. of India- Institute Assistantship (2006–2010).Email: [email protected]