Patent ID: 8149165
Filing Date: 2012-04-03
Classification: H01Q

Abstract:
1. A method for interfacing a plurality of signal paths with an antenna array, the method comprising: adjusting the phase of a first LO signal of a first signal path independently of the phase of a second LO signal of a second signal path when the first and second signal paths are coupled to first and second unbalanced antenna elements, respectively, of the antenna array, the first local oscillator (LO) signal being mixed with a signal in the first signal path, the second local oscillator (LO) signal being mixed with a signal in the second signal path; and adjusting the phase of the first LO signal to differ by π radians from the phase of the second LO signal when the first and second signal paths are coupled to first and second balanced nodes, respectively, of a balanced antenna element of the antenna array.