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Abstract
This paper presents frequency- and time-domain characterization of a new hexagonal-shaped monopole antenna with small slots for ultra-wideband (UWB) applications. The antenna was simulated using commercial software tools (CST) microwave studio and Agilent ADS. Neltec make a soft substrate having a dielectric constant of 2.2 and a board thickness of 0.254 mm (10 mil) was used to fabricate the proposed antenna. Frequency-domain characterization using an automatic network analyzer showed return loss less than -10 dB over the entire UWB frequency band. To study the effect of various parameters on the antenna performance, the detailed parametric study was carried out. The radiation patterns and group delay characteristics were measured in an anechoic chamber. Using an Agilent DSO9000A oscilloscope, time-domain characterization of the antenna was carried out. The simulated and measured results in the time domain showed good agreement. It was observed that the proposed antenna shows reasonably good frequency characteristics and time-domain pulse distortion is small indicating usefulness of the antenna for UWB communication applications.
Additional information
Notes on contributors
Mithilesh Kumar
Mithilesh Kumar (b.1969) received the B.E. (1992) degree in Electronics and Communication Engineering from the Govt. Engineering College, KOTA, University of Rajasthan, M. Tech. (1998–99) Degree in Communication and Radar Engineering, and Ph. D. (2011) Degree in RF Communication Engineering from the Indian Institute of Technology, Delhi. India. His current research interests include RF Communication, UWB Active Antenna, Microstrip Antenna and Microwave Device Designing Technology.
Dr. Mithilesh Kumar served as a Lecturer (1993–2000) and Sr. Assistant Professor (2000–2008) at Rajasthan Technical University Kota, Rajasthan. Currently, he is an Associate Professor (2008-till date) at the same university.
He is the author/co-author of 45 Research Papers in refereed Journals, International and National Conferences. He received “First prize best student paper platinum award” in 2009 at the IEEE International conference on Antennas, Propagation and Systems (INAS-2009) held at Johor Bahru, Malaysia from December 3–5, 2009. He is a Member of the IEEE-Microwave Theory and Techniques Society. E-mail: [email protected]
Ananjan Basu
Ananjan Basu received the B.Tech degree in electrical engineering and M.Tech degree in communication and radar engineering from the Indian Institute of Technology Delhi (I.I.T.Delhi), in 1991 and 1993, respectively, and the Ph.D. degree in electrical engineering from University of California at Los Angeles (UCLA), in 1998. He has been with the Centre for Applied Research in Electronics, I.I.T. Delhi since 1999. His specialization is in microwave and millimeter-wave component design and characterization, active and reconfigurable antennas and microwave imaging. He is the present Vice-chairman of the IEEE MTT-S Chapter under Delhi section, and Advisor for IEEE-MTTS Student Branch at IIT Delhi. E-mail: [email protected]
Shiban K. Koul
Shiban K. Koul is a Professor at the Centre for Applied Research in Electronics, Indian Institute of Technology Delhi. His research interests include: RF MEMS, Device modeling, Millimeter wave IC design and Reconfigurable microwave circuits including antennas. He is the Chairman of M/s Astra Microwave Pvt. Ltd, a major private company involved in the Development of RF and Microwave systems in India. He is author/co-author of 195 Research Papers and 7 state-of-the art books. He has successfully completed 25 major sponsored projects, 50 consultancy projects and 33 Technology Development Projects. He holds 7 patents and 4 copyrights.
Dr. Koul is a Fellow of the IEEE, USA, Fellow of the Indian National Academy of Engineering (INAE) India and Fellow of the Institution of Electronics and Telecommunication Engineers (IETE) India, He has received Gold Medal by the Institution of Electrical and Electronics Engineers Calcutta (1977); S.K.Mitra Research Award (1986) from the IETE for the best research paper; Indian National Science Academy (INSA) Young Scientist Award (1986); International Union of Radio Science (URSI) Young Scientist Award (1987); the top Invention Award (1991) of the National Research Development Council for his contributions to the indigenous development of ferrite phase shifter technology; VASVIK Award (1994) for the development of Ka- band components and phase shifters; Ram Lal Wadhwa Gold Medal (1995) from the Institution of Electronics and Communication Engineers (IETE); Academic Excellence award (1998) from Indian Government for his pioneering contributions to phase control modules for Rajendra Radar; and Shri Om Prakash Bhasin Award (2009) in the field of Electronics and Information Technology.
Dr. Koul has recently been appointed as a Distinguished Microwave Lecturer by the IEEE Microwave Theory and Techniques (MTT) Society, USA for the period 2012–2014. He is also a serving AdCom member of the MTT-society. E-mail: [email protected]