Patent ID: 9531070
Filing Date: 2016-12-27
CPC Classification: H01Q

Claim Text:
1. A method comprising: implementing a coupled Voltage Controlled Oscillator (VCO) array with a plurality of VCOs; mixing Local Oscillator (LO) signals generated through the plurality of VCOs of the coupled VCO array with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array; accommodating differential coupling between the VCOs to achieve an improved immunity to at least one of: noise and interference during the beamforming, wherein the improved immunity is better than an immunity of the VCOs accommodating single-ended coupling instead of the differential coupling therebetween; injection locking two or more VCOs of the coupled VCO array to each other; and coupling a VCO of the coupled VCO array to another VCO thereof through a differential bidirectional coupling circuit.