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A novel 2N beams heterodyne optical beamforming architecture based on N/spl times/N optical Butler matrices

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6 Author(s)
Madrid, D. ; FRG/ITACA, Univ. Politecnica de Valencia, Spain ; Vidal, B. ; Martinez, A. ; Polo, V.
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A novel beamforming architecture based on optical Butler matrices is proposed and experimentally evaluated. The optical Butler matrix operating principle and the effects of fabrication inaccuracies on the beamformer radiation pattern are presented. The proposed architecture offers simultaneous multibeam generation capability. 40 GHz RF phase measurements are presented with low ripple and high linearity. Finally, an upgraded architecture is proposed which allows to double the number of beams (2N).

Published in:

Microwave Symposium Digest, 2002 IEEE MTT-S International  (Volume:3 )

Date of Conference:

2-7 June 2002