Miniaturization of multiband annular slot ring antenna using reactive loading. Issue 14 (22nd September 2018)

• Record Type: Journal Article
• Authors: Mulla, Sajeed Sirajuddin; Deshpande, Shraddha S.
• Is Part Of: Journal of electromagnetic waves and applications. Volume 32:Issue 14(2018)
• Page Start: 1779
• Page End: 1790
• Publication Date: 2018-09-22
• Subjects: Microstrip antenna -- slot antenna -- annular slot antenna -- metamaterial -- split ring resonator; Electromagnetic waves -- Periodicals; Electromagnetic devices -- Periodicals; 621.3
• DOI: 10.1080/09205071.2018.1470577
• Languages: English
• ISSNs: 0920-5071

Abstract

Abstract: A multiband annular slot ring (ASR) antenna for mobile communications is designed and analysed in this paper. Then, the miniaturized multiband ASR antenna loaded with distributed inductive stub is proposed, which is miniaturized by 20.28%. Another multiband ASR antenna loaded with meta-material (ASR-SRR) inspired Electromagnetically Coupled Split Ring Resonator (EC-SRR) is proposed, it is miniaturized by 30.55%. The surface wave of the proposed miniaturized ASR-SRR in higher mode has reduced due to increase in reactive impedance of the antenna surface, thus aperture efficiency is increased. The radiation characteristics of miniaturized antennas are approximately similar to the ASR antennas. Behaviour of antenna characteristics such as gain (G), impedance bandwidth (BW), aperture efficiency ( η A ), Chu condition ( ka ≤ 1) of proposed antenna is also studied, observed and analysed in this paper.