Analysis of Different Feeding Techniques of Butterfly-Shaped Patch Antenna with Defected Ground for UWB Application

Abstract

A miniaturized butterfly-shaped microstrip patch antenna is proposed for unlicensed millimeter wave band applications. The overall dimensions of the proposed antenna are (20 × 18 × 1.6) mm³ or (3.93 × 3.54 × 0.314)λ₀³ with rectangular defected ground structure, which is etched on the ground plane to improve its performances. This configuration achieved an ultra-wide bandwidth (UWB) of 7 GHz (26%) and 22 GHz (37.9%) with radiation efficiencies of 92% and 61%, covering the frequency range from 19.3–25.2 GHz to 48–70 GHz, respectively. The reflection coefficient of the antenna is −41.2 dB with a peak gain of 12.4 dBi at the 56.6 GHz and 10 dBi at 61.4 GHz resonating frequency. Further, the analysis of the proposed antenna is done by different feeding techniques like coaxial, inset feed, gap coupled, aperture coupled and proximity coupled. Considering the size, bandwidth and gain, the microstrip antenna is applicable for unlicensed 57–64 GHz wireless applications for the short-range and high-speed communications like WPAN, WLAN, Intelligent Transport System, Smart Automobiles and Gi-fi. All the simulation results have been performed on Ansys HFSS v.13.1. Proposed antenna has been fabricated on the PCB board.

KEYWORDS:

• Aperture coupled feed
• Defected ground structure
• Feeding techniques
• Gain
• Gap coupled feed
• Inset feed
• Microstrip feedline
• Proximity coupled feed
• Unlicensed area
• UWB

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

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Notes on contributors

Komal Jaiswal

Komal Jaiswal is currently pursuing her PhD in the field of microwaves from the Department of Electronics and Communication, University of Allahabad, Allahabad, India. She obtained her MTech in communication system engineering from Sam Higginsbottom Institute of Agriculture Technology and Science Allahabad in 2014 and BE degree in electronics and communication from Jai Naraian College of Technology Engineering, Bhopal in 2010. She is working in the area of microwaves, biomedical, feeding techniques, millimeter wave antenna, ultra wide band, MIMO antenna, 5G antenna, RFID and microstrip patch antenna. E-mail: [email protected]

Shekhar Yadav

Shekhar Yadav was born in Prayagraj (UP), India in 1992. He received his BTech degree from UP Technical University in 2011. MTech degree from Department of Electronics and Communication Central University of Allahabad (UP) India in 2013. He is pursuing PhD in the field of microstrip patch antenna from Department of Electronics and Communication, Central University of Allahabad (UP) India. His area of interest includes designing and modeling of UWB antenna, MIMO antenna, and mm wave antennas. E-mail: [email protected]

Nagendra Yadav

N P Yadav was born in Varanasi (UP), India in 1984. He received his PhD degree from Department of Electronics and Communication Central University of Allahabad (UP) India in 2011. From January 2012 to November 2013 worked as an assistant professor in the Department of Physics, JSS Academy of Technical Education Noida, India. From December 2013 to December 2015 worked as postdoctoral in the field of multiband microstrip patch antenna, School of Optoelectronics Nanjing University of Science and Technology, China. From December 2015 to August 218 worked as an associate professor in Nanjing University of Science and Technology China. His professional interests include the area of microwave and millimeter wave propagation, radar, scattering, ferrite devices, electronic scanning antennas, microstrip antennas, piezoelectric effects in bone, electromagnetic interaction (both energetic and informational) with biographical media, optical imaging high resolution image by PIMI (Parameter of Indirect Microscopic Imaging). He has published over 75 research papers in international refereed journals and proceedings. He is also a research supervisor in Uttar Pradesh Technical University, India. He has awarded many times best paper award in international and national conferences. He is in active member of IEEE and OSA He is principal investigator of two national projects running in China and Co-P I of more than 5 international projects. Currently, he is working as a professor and director of electrical branch year-4 in School of Electrical and Electronics Information Engineering, Hubei Polytechnic University, Huangshi China. E-mail: [email protected]

Ram Suchit Yadav

Ram Suchit Yadav was born in Allahabad / Prayagraj, Uttar Pradesh, India in 1957. He is working as professor in the Department of Electronics and Communication, Central University of Allahabad, Uttar Pradesh, India. Earlier worked in UPTRON India Limited, Indian Civil Aviation Department, Indian Telephone Industries Limited Naini, Allahabad and Indian Telephone Industries Limited Mankapur, Uttar Pradesh. He is secretary of IETE Allahabad, Uttar Pradesh, India. He is working in the field of mesopheric dynamics in mesosphere region and microstrip antenna. He had worked at National Atmospheric Research Laboratory, Gandki, Andhra Pradesh. Supervised MTech and PhD research scholars in the field of mesopheric dynamics & microstrip patch antenna.