Patent ID: 9537558
Date: 2017-01-03
CPC Classifications: H01Q,H03F,H03G,H04B

Claim:
1. A phase shifter topology circuit comprising: an I/Q generator configured to receive an input signal, and generate an in-phase (I) signal and a quadrature-phase (Q) signal based on the input signal; a first variable amplitude amplifier arranged to receive the I signal from the I/Q generator, and configured to adjust the phase of and amplify the I signal to provide an inphase I signal and an outphase I signal 180° out of phase with the inphase I signal; a second variable amplitude amplifier arranged to receive the Q signal from the I/Q generator, and configured to adjust the phase of and amplify the Q signal to provide an inphase Q signal and an outphase Q signal 180° out of phase with the inphase Q signal; and a phase shifter component arranged to selectively receive the outphase I signal or the inphase I signal from the first variable amplitude amplifier and to selectively receive the outphase Q signal or the inphase Q signal from the second variable amplitude amplifier, and configured to control the gain of the received outphase or inphase I signal and the received outphase or inphase Q signal to provide a composite output signal with a desired phase shift between 0° and 360°.