Compact Printed Tapered Slot Antenna for UWB

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Costa, Jorge R.; Medeiros, Carla R.; Fernandes, Carlos A. (Instituto de Telecomunicações, IST, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal)
Costa, Jorge R. (Instituto Superior de Ciências do Trabalho e da Empresa, DCTI, Av. das Forças Armadas, 1649-026 Lisboa, Portugal)

This paper presents a compact and low-profile printed antenna that exhibits adequate performance for UWB communications. The antenna is based on a combination of two crossed exponentially tapered slots plus a star-shaped slot to produce a completely symmetric balanced structure. The radiation pattern presents smooth frequency dependence and very stable polarization over the 3.1-10.6 GHz FCC assigned band. Results are confirmed with measurements. Figures of merit like output pulse fidelity and time window containing 90% of the transmitted energy are analyzed and showed to comply with UWB application requirements.