Patent ID: 7016433

Claim:
A communication system comprising: (a) an amplifier which receives a communication signal, the amplifier being controlled by an amplification control signal; (b) an insertion phase variation compensation module which counteracts the effects of a phase offset intermittently introduced into the communication signal when the amplifier is either enabled or disabled in response to the amplification control signal, wherein the communication signal is amplified by the amplifier when the amplifier is enabled, and the communication signal is not amplified by the amplifier when the amplifier is disabled; (c) a processor which generates the amplification control signal; and (d) a look up table (LUT) in communication with the processor and the insertion phase variation compensation module, wherein the LUT receives the amplification control signal from the processor and provides an estimate of the phase offset to the insertion phase variation compensation module as a function of the amplification control signal, the provided estimate includes a Sin function and a Cos function of the phase offset, x, the insertion phase variation compensation module has a real, Re, input associated with a digital in-phase (I) signal component and an imaginary, Im, input associated with a quadrature (Q) signal component and, based on the estimate provided by the LUT, the insertion phase variation compensation module outputs an I signal component having a phase that is adjusted in accordance with the following function: (Cos(x)×Re)−(Sin(x)×Im).