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Continuously variable true time delay optical feeder for phased array antenna employing chirped fiber gratings

By J.L. Corral, J. Martí, A. Santos, J.M. Fuster, J. Capmany, D. Pastor, M.J. Cole and R.I. Laming


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

Topics: QC, TK
Year: 1997
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Provided by: e-Prints Soton

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