6533b7d2fe1ef96bd125ea6f
RESEARCH PRODUCT
Variable delay line for phased-array antenna based on a chirped fiber grating
Beatriz OrtegaDaniel PastorMiguel V. AndrésJosé CapmanyJose L. Cruzsubject
PhysicsBeamformingRadiationbusiness.industryPhased arrayPhase (waves)Physics::OpticsGratingCondensed Matter PhysicsSignallaw.inventionOpticsFiber Bragg gratinglawModulationBlazed gratingPhysics::Atomic PhysicsElectrical and Electronic Engineeringbusinessdescription
We present a theoretical and experimental analysis of the performance of phased-array antennas steered by a single chirped fiber grating. Two approaches consisting of conventional and single-sideband (SSB) modulation techniques of the optical signal are presented in order to compare their performance and suitability for beamforming applications in microwave antennas. By using a 40-cm-long chirped grating, we measure the phase and amplitude response and calculate the corresponding radiation patterns to demonstrate wide-band operation and continuous spatial scanning properties of both configurations. SSB modulation Is presented as a real alternative to the first one offering broader operation band (4-18 GHz) for a given chirped grating and being less demanding on the fiber grating characteristics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 | IEEE Transactions on Microwave Theory and Techniques |