A new insightful exploration into a low profile ultra-wide-band (UWB) microstrip antenna for DS-UWB applications

Abstract

Designing a simple and planar antenna for high speed short distance ultra-wideband (UWB) communication has become a buzzword over the last few years. There are two very different categories of UWB technologies of vital relevance, i.e. (i) carrier-free direct sequence UWB (DS-UWB), and (ii) the Multi-Band orthogonal frequency division multiplexing UWB (OFDM UWB) technology. In, Multi-Band OFDM UWB technology, multi narrowband UWB antennas with frequency notches are required. However, in DS-UWB technology, the frequency spectrum of very short duration transmitted pulses occupies wide bandwidth, and hence to transmit it, the antenna should be fully matched over the entire bandwidth without the presence of any frequency notch. In this paper, a novel, small and completely planar air gap and defected ground slot integrated rectangular microstrip antenna with dual shorting posts have been thoroughly investigated to yield UWB, i.e. (109%) bandwidth without the presence of any frequency notch.

KEYWORDS:

• Rectangular microstrip antenna
• wideband
• multiresonance

Acknowledgment

The authors would like to thank Prof. Debatosh Guha and Dr. J. Y. Siddiqui of Calcutta University for their support. S. Chakraborty would like to thank Director, CSIR-CEERI, Pilani and Dr. S. K. Ghosh, Principal Scientist, CSIR-CEERI, Pilani for always encouraging research endeavors.

Disclosure statement

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