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Download fileFrequency and beam reconfigurable antenna using photoconducting switches
journal contribution
posted on 2007-07-04, 14:57 authored by Chinthana PanagamuwaChinthana Panagamuwa, Alford ChaurayaAlford Chauraya, J. C. VardaxoglouA 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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
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. 449-454Publisher
© Institute of Electrical and Electronics Engineers (IEEE)Publication date
2006Notes
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.ISSN
0018-926XLanguage
- en