Patent ID: 9252485
Filing Date: 2016-02-02
CPC Classification: H01Q

Claim Text:
1. A phased array antenna system with electrical tilt control operative as a transmitter in transmit mode, comprising: an array of antenna elements; tilt control means for splitting an input signal into at least first, second and third intermediate signals, where the first and second intermediate signals are each variably delayable relative to the third intermediate signal, wherein the third intermediate signal receives no variable delay, wherein the tilt control means includes a respective variable delaying means for variably delaying each of the first and second intermediate signals relative to the third intermediate signal, the variable delaying means being arranged to provide delays which vary at like rates and where one of the delays increases while another of the delays reduces; corporate feed means for processing the intermediate signals to produce drive signals for antenna elements, the drive signals at least partly comprising vector combinations of the intermediate signals, wherein at least one drive signal comprises the third intermediate signal that is not combined with either of the first intermediate signal and the second intermediate signal; and wherein the drive signals are for steering a beam of the array of antenna elements in response to the delays of the first and second intermediate signals relative to the third intermediate signal.