Continuously variable true time delay optical feeder for phased array antenna employing chirped fiber gratings
Corral, J.L., Marti, J., Santos, A., Fuster, J.M., Capmany, J., Pastor, D., Cole, M.J. and Laming, R.I. (1997) Continuously variable true time delay optical feeder for phased array antenna employing chirped fiber gratings. IEEE Transactions on Microwave Theory, 45, (8), 1531-1536. (doi:10.1109/22.618471 ).
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In this paper we propose and demonstrate a novel approach of true-time delay (TTD) optical feeder for phased-array antennas. A continuously variable TTD is achieved by employing tunable lasers and a wide bandwidth chirped fiber grating as dispersive element. The results show that a very high resolution performance (equivalent to a 6 bit microwave phase shifter) is obtained for a L-band phased-array antenna employing narrow tuning bandwidth lasers with a wavelength stability of 0.005 nm and a 4 nm bandwidth chirped grating with dispersion 835 ps/nm.
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Mar 2010|
|Last Modified:||08 Jun 2012 12:57|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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