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ABSTRACT
A novel miniaturized dipole antenna design incorporating triple sleeves and shorting load leading to enhanced bandwidth is proposed in the present work. The Triple Sleeve Dipole Antenna with Shorting Loads is designed from 500 to 3000 MHz with no tuning mechanism. The concept of triple sleeve and distributed shorting loads reduced the length of the antenna by 51.5% compared to a half wave dipole antenna at the lowest frequency. The equivalent circuit of the antenna in terms of lumped elements is determined by using a Genetic algorithm. The proposed antenna is simulated in CST Microwave Studio, fabricated, evaluated and the results are presented. The antenna can be used for trans-receive applications of wireless communications in military systems.
ACKNOWLEDGEMENTS
The authors would like to thank Dr. A.K. Singh, OS and Director, DLRL for constant encouragement and support in carrying out the research work.
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Notes on contributors
Chandana Sairam
Chandana Sairam graduated in ECE from Osmania University, India in 1993. He has designed and developed a wide variety of broadband antennas for electronic warfare applications at DLRL, India. He has published over 50 papers in international conferences and journals. His areas of interest are in broadband HF/VHF/UHF antennas, wireless communication systems and computational electromagnetics. He is a member of IEEE, member of AOC and Fellow of IETE, New Delhi, India. He is also pursuing part-time PhD from the National Institute of Technology, Warangal, Telangana, India.
Damera Vakula
Damera Vakula received her bachelor's degree in electronics and communication engineering from Nagarjuna University, AP, India and master’s degree Tech. from Birla Institute of Technology, Mesra, India, with microwave specialization in the year 1992 and 1994, respectively. She obtained PhD on fault diagnostics of antenna arrays from the National Institute of Technology, Warangal, in the year 2010. She is working as associate professor in National Institute of Technology, Warangal, India since 2006. Her areas of interest include phase array antennas, ultra wideband antennas, multiband antennas, fault diagnostics, and neural networks. Email: [email protected]
Mada Chakravarthy
Mada Chakravarthy obtained BTech (ECE) from JNTU College of Engineering, Kakinada, India in 1986 and M.E. (MRE) from University College of Engineering, Osmania University, Hyderabad in 1996 and PhD from University College of Engineering, Andhra University, Visakhapatnam in 2012. He has designed and developed multioctave band microwave electronic warfare antennas, radomes and antenna subsystems for defence applications at DLRL, India. He is member of AOC and IETE, New Delhi, India. Email: [email protected]