US 6,982,670 B2
Phase management for beam-forming applications
Farrokh Mohamadi, 8 Halley, Irvine, Calif. 92612-3797 (US)
Filed on Jun. 03, 2004, as Appl. No. 10/860,526.
Claims priority of provisional application 60/476248, filed on Jun. 04, 2003.
Prior Publication US 2004/0246176 A1, Dec. 09, 2004
Int. Cl. H01Q 3/24 (2006.01)
U.S. Cl. 342—372 16 Claims
OG exemplary drawing
 
16. A beam-forming system, comprising:
a programmable phase sequencer operable to provide phase-shifted versions of a reference clock, and
a plurality of integrated antenna circuits corresponding to the phase-shifted versions of the reference clock, each integrated antenna circuit including a phase-locked loop and a corresponding antenna and mixer, each phase-locked loop operable to receive the corresponding phase-shifted version of the reference clock as a reference signal and provide a frequency-shifted output signal that is synchronous with the reference signal, wherein if an integrated antenna circuit is configured for transmission, the output signal is upconverted in the circuit's mixer and the upconverted signal transmitted by the corresponding antenna, and wherein if an integrated antenna unit is configured for reception, a received signal from the circuit's antenna is downconverted in the mixer responsive to the output signal.