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Title: Frequency and beam reconfigurable antenna using photoconducting switches
Authors: Panagamuwa, C.J.
Chauraya, Alford
Vardaxoglou, J.C.
Keywords: Dipole antenna
Frequency control
Optical switches
Issue Date: 2006
Publisher: © Institute of Electrical and Electronics Engineers (IEEE)
Citation: PANAGAMUWA, C.I., CHAURAYA, A. and VARDAXOGLOU, J.C. (2006). Frequency and beam reconfigurable antenna using photoconducting switches. IEEE Transactions on Antennas and Propagation, 54, (2), pp. 449-454
Abstract: A design for an optically reconfigurable printed dipole antenna is presented. A wideband coplanar waveguide (CPW) to coplanar stripline (CPS) transition is used to feed the balanced printed dipole. Two silicon photo switches are placed on small gaps in both dipole arms equidistant from the centre feed. Light from two infrared laser diodes channelled through fiber optic cables is applied to the switches. With the gaps in the dipole bridged, the antenna resonates at a lower frequency. Measured return loss results that compare well to the simulated values are also presented, showing a frequency shift of nearly 40%. The change in bore-sight gain along with radiation patterns are also presented. Activating each switch individually results in a near 50 shift in beam nulls.
Description: This article was published in the journal IEEE Transactions on Antennas and Propagation [© IEEE] and is available at: http://www.ict.csiro.au/aps/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
URI: https://dspace.lboro.ac.uk/2134/2950
ISSN: 0018-926X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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