Patent ID: 8862080
Filing Date: 2014-10-14
Classification: H04B,H04L

Abstract:
1. A phase shifter, comprising: an interchange section which is configured to receive an I signal and a Q signal from a plurality of distributors, perform at least two of interchanging the I signal and the Q signal, interchanging a polarity of the I signal and a polarity of the Q signal, and interchanging the I signal and the Q signal and the polarity of the I signal and the polarity of the Q signal, and output an interchanged signal; a phase shifting section which is configured to change a phase of the interchanged signal that is output by the interchange section and output a phase shifted interchanged signal; a gilbert cell mixer which is configured to mix the interchanged signal according to the phase; and an output configured to provide the phase shifted interchanged signal to an orthogonal modulator, wherein the I signal comprises a pair of differential signals and the Q signal comprises a pair of differential signals.