Analysis of an open-ended inverted L-shaped slot-loaded microstrip patch antenna for size reduction and multifrequency operation

S. Das, P.P. Sarkar and S.K. Chowdhury

Journal of Electromagnetic Waves and Applications, 2015, vol. 29, issue 7, 874-890

Abstract: This paper proposes a detail analysis of a single layer, single-feed microstrip patch antenna for size reduction and multifrequency operation. An open-ended inverted L-shaped slot is introduced at the left-hand side radiating edge of the patch to reduce the size of the antenna by reducing the resonant frequency. Multiple resonant frequencies are also obtained by introducing the open-ended inverted L-shaped slot. The measured result shows that the size of the proposed antenna has been reduced by 74.3% when compared with conventional rectangular microstrip antenna with same patch area. The proposed antenna also provides increased frequency ratio (the ratio of second or higher resonant frequency to the first resonant frequency). The conventional and proposed antennas are designed and simulated by method of moment-based IE3D software. An extensive analysis of the antenna parameters (reflection coefficient, radiation pattern, gain, etc.) including surface current distribution is given in this paper.

Date: 2015
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DOI: 10.1080/09205071.2015.1025914

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