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Photonic 60-GHz maximum directivity beam former for smart antennas in mobile broad-band communications

: Grosskopf, G.; Eggemann, R.; Zinal, S.; Kuhlow, B.; Przyrembel, G.; Rohde, D.; Kortke, A.; Ehlers, H.


IEEE Photonics Technology Letters 14 (2002), No.8, pp.1169-1171
ISSN: 1041-1135
Journal Article
Fraunhofer HHI ()
antenna feeds; antenna phased arrays; heterodyne detection; integrated optoelectronics; microwave photonics; millimetre wave antenna arrays; mobile communication; semiconductor lasers; photonic 60-GHz maximum directivity beam former; smart antennas; mobile broad-band communications; optical heterodyning; laser diodes; photonic planar lightwave circuits; silica technology; beam former; millimeter-wave signals; antenna feeding; field distribution; maximum directivity beam-forming algorithm; 60 GHz; sio2

Experiments are described using a photonic beam former to control a 60-GHz smart antenna. The 60-GHz signals are generated by optical heterodyning the waves of two laser diodes. Beam forming is achieved by new photonic planar lightwave circuits in silica technology. The beam former enables individual weighting of the millimeter-wave signals feeding the antenna elements. The required weights for a desired field distribution are calculated using the maximum directivity beam-forming algorithm.