Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods

摘要

A communications device (500') may include an In-phase (I) circuit having an In-phase modulator and mixer circuit (503'-506a'), and an I power amplifier (512a') circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal (601a'-601b') to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit (503'-506b'), and a Q power amplifier circuit (512b') coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal (601c'-601d') to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor (530') configured, for example, to selectively switch the digital baseband I signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. For example, the controller may selectively phase shift the digital baseband I and Q signals, and control the I and Q power amplifier circuits to vary an amplitude of the amplified I and Q signals.