Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Reexamination Certificate
2011-06-21
2011-06-21
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
Reexamination Certificate
active
07965234
ABSTRACT:
A beamforming apparatus for a multi-antenna system includes a phase control unit including a plurality of phase shifters which respectively control the phases of signals according to a preset phase weight vector; a signal combination unit combining the signals outputted from the plurality of phase shifters; a frequency down converter down-converting the combined signal outputted from the signal combination unit into a baseband signal; an analog/digital (A/D) converter converting the baseband signal into a digital signal; and a radio frequency (RF) beamforming control unit providing a plurality of preset phase weight vectors to the phase control unit according to a preset application sequence, deciding a maximum signal-to-noise ratio (SNR) among a plurality of SNRs corresponding to the applied phase weight vectors by using the digital signal outputted from the A/D converter, and controlling the beamforming of the phase control unit by using the maximum SNR.
REFERENCES:
patent: 6166690 (2000-12-01), Lin et al.
patent: 2004/0178954 (2004-09-01), Vook et al.
patent: 2006/0067277 (2006-03-01), Thomas et al.
patent: 2007/0037528 (2007-02-01), Doan et al.
patent: 2009/0121936 (2009-05-01), Maltsev et al.
Jo Kyung Tae
Ko Young Chai
Park Chul Gyun
Park Joun Sup
Lowe Hauptman & Ham & Berner, LLP
McGue Frank
Samsung Electro-Mechanics Co. Ltd.
Tarcza Thomas H
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