Isolation enhancement in a dual port antenna

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http://eprints.org/relation/isVersionOf http://etheses.bham.ac.uk/id/document/21639 http://eprints.org/relation/isVolatileVersionOf http://etheses.bham.ac.uk/id/document/21639 http://eprints.org/relation/isIndexCodesVersionOf http://etheses.bham.ac.uk/id/document/21639 archive 4031 disk0/00/00/34/48 2012-07-11 11:24:57 2019-01-23 09:56:18 2012-07-11 11:24:57 thesis show 0 Jasteh Donya Hall Peter S. Gardner Peter University of Birmingham Isolation enhancement in a dual port antenna unpub TK 10col_ephy Nowadays multiple antennas are very popular. However embedding many antennas closely in a compact printed circuit board will raise the issue of mutual coupling between them, which will decrease their performance. The research described in this thesis, concerns enhancing the isolation in a dual port antenna. The general approach is to design a four-port feed network to be connected to the antenna to fulfil this task. The sample antenna that the approaches were applied to is an already designed by a member of Antenna and Applied Electromagnetics Laboratory. The feed-network that has been designed consists of a coupler and a phase shifter. Different kinds of couplers have been designed and implemented. The simulation and measurement results are compared and the conclusions are drawn. 2012-07 2011-10 graduation eng This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. ubira@bham.ac.uk public 110 University of Birmingham School of Engineering, Department of Electronic, Electrical and Systems Engineering m_ph na 2012-07 graduation