A Compact SE-DGS Tapered-Fed Notched UWB Antenna Integrated with Ku/K Band for Breast Cancer Detection

Abstract

A compact and novel semi-elliptical defected ground structure (SE-DGS) tapered microstrip line fed UWB antenna with band-notched characteristics integrated with Ku and K band applications is proposed. The proposed SE-DGS UWB antenna is printed on a compact size of (15 × 18 mm²) and has radiation bandwidth of 25.66 GHz over a span of 4.11–29.77 GHz, a fractional bandwidth of 151.47%, and both the down link of X- and ITU-8 bands are completely notched over a span of 6.86–9.09 GHz using a single C-structured reflector. The proposed antenna has a fluctuating gain of 1.7–4.82 dBi except for the gain at the notched band frequency, which is −12.25 dBi. The proposed antenna has a high radiation efficiency of 96.23%, stable radiation patterns over the UWB range, and a high rejection capability of the notched band, which is noticed from the high value of VSWR of 23.15, making it a potential candidate for UWB, Ku, and K band wireless applications with effectively suppressed downlink of X and ITU-8 bands. The developed antenna design simulates breast cancer tissue detection by comparing S₂₁ results, and specific absorption rates with and without tumour scenarios. These results suggest that the proposed radiator and system detect breast tumours efficiently.

KEYWORDS:

• Band notch
• Breast cancer
• Taper fed
• Ultra-wideband

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

V. L. N. Phani Ponnapalli

V L N Phani Ponnapalli received BTech degree in electronics & communication engineering in 2009 from JNTU Hyderabad. He obtained MTech degree in 2011 from Vignan University. He is presently pursuing PhD from Annamalai University. He is currently working as associate professor of electronics & communication engineering in Vikas College of Engineering & Technology, Vijayawada, India. His research interests on multiband antennas, MIMO, UWB, and communications. Corresponding author. Email: [email protected]; [email protected]

S. Karthikeyan

S Karthikeyan is working as assistant professor in the Department of EEE, Annamalai University, Chidambaram, Tamil Nadu, India. He has 17 years of teaching experience. He obtained BE in 2002 from Annamalai University. He obtained ME from Annamalai University in Power Systems specialization. He was awarded PhD in the year 2017 from Annamalai University. He is currently guiding three PhD scholars. He has published 10 papers in international journals and attended a international conference. Email: [email protected]

J. Lakshmi Narayana

Jammula Lakshmi Narayana is working as professor in the Department of ECE, PSCMR College of Engineering & Technology, Vijayawada, Andhra Pradesh, India. He has 18 years of teaching experience. He has done his AMIETE in 1999 from IETE. He has done his MTech from KLCE, Guntur. He was awarded PhD in the year 2013 from JNTUH, Hyderabad. He has published 30 papers in international journals and conferences. Email: [email protected]

V. N. Koteswara Rao Devana

V N Koteswara Rao Devana received the BTech degree in electronics & communication engineering from Nagarjuna University, Andhra Pradesh, India, and MTech degree in systems and signal processing from JNTUH, Hyderabad, India. He obtained PhD in the field of wireless communications, from JNTUA Anantapur, Ananthapuramu, Andhra Pradesh. He has published papers in over 45 international/national journals and conferences in various SCI/SCIE/ESCI/SCOPUS indexed journals and also as a reviewer for various SCI/SCIE/SCOPUS indexed journals like IJE, IJEL, AEU-IJECE, AIC& SP, MOTL, IJMWT, etc. Currently, he is working as an associate professor in the Department of ECE, Aditya Engineering College, Surampalem, Andhra Pradesh, India. His research interests are: design of microstrip patch antennas, UWB antennas, MIMO, CMA, metamaterial, flexible and multiband antennas. Email: [email protected], [email protected]