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Abstract
A printed monopole super wideband (SWB) antenna is presented in this paper. It consists of a beveled-shaped radiator and a tapered ground plane. It is investigated that tapering of the radiator and ground plane enhances the impedance matching and results in broad impedance bandwidth. The experimental result depicts that the antenna achieved 164.9% impedance bandwidth from 2.6 to 27.27 GHz. Furthermore, to prevent the interference caused by communication systems within the ultra-wideband (UWB) range, dual-band rejection at Wi-MAX (2.7–4 GHz). and X-band (8.5–12 GHz) are introduced by etching an H-shape and two back-to-back C-shaped notches in the radiator and feedline, respectively. The measured result demonstrates that both slots effectively reject the desired frequency bands with a small shift in the lower frequency edge from 2.41 to 2.6 GHz. In addition, the proposed antenna application is shown in the two elements MIMO system where a bowtie decoupling structure is utilized to improve the isolation. It is found that the presence of a decoupling structure improves the isolation by up to 60%. To characterize the diversity performance, parameters such as Diversity Gain (DG), Envelop Correlation Coefficient (ECC), Channel Capacity Loss (CCL), and Mean Effective Gain (MEG) are calculated and all are found in the acceptable limit.
ACKNOWLEDGEMENT
The authors thank CARE Lab IIT Delhi for helping with measurements.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Sachin Agrawal
Sachin Agrawal completed his PhD from IIITDM Jabalpur in 2018. He completed his ME from Birla Institute of Technology Pilani, India in 2009. Currently, he is working as an assistant professor at the National Institute of Technology, Delhi. His areas of interest are RF energy harvesting, antenna designing, and mobile communication.
Manoj Singh Parihar
Manoj Singh Parihar received his BTech and MTech from RGPV Bhopal in 2001 and 2004, respectively. He completed his PhD from Indian Institute of Technology Delhi in 2012. He was a senior project scientist at the Center for Applied Research in Electronics, IIT Delhi from July 2010 to March 2013. In October 2007, he received ‘The Institute of Electronics and Telecommunication Engineers (IETE) Research fellowship’ for continuing his research work in Reconfigurable Antennas. He was a recipient of the travel grant (2007) awarded jointly by the National Institute of International Education (NIIED) and the Republic of Korea. Currently, he is working as an assistant professor at PDPM-IIITDM, Jabalpur. His areas of interest are reconfigurable antennas, microwave integrated circuits, microwave and millimeter wave device characterization, and RF MEMS. Email: [email protected]