Patent ID: 8068797
Filing Date: 2011-11-29
Classification: H03G,H04B

Abstract:
1. A method for performing gain control in a transmitter of a wireless device, said transmitter including a combiner and a variable gain amplifier, said method comprising: generating a gain ramp signal that includes a delay component and a gain component, said gain component indicating a sequence of gains; generating a gain arc, said gain arc exhibiting an arc duration, and a portion of said gain arc indicating a low instantaneous signal power level at an antenna of said wireless device; incorporating said gain arc into a digital gain signal to form a composite digital gain signal; receiving a digital input signal at said combiner; combining said composite digital gain signal with said digital input signal at said combiner to generate a pre-compensated digital signal; generating a pre-adjusted analog signal from said pre-compensated digital signal; and applying said gain ramp signal to said pre-adjusted analog signal at said variable gain amplifier to generate a gain-adjusted analog signal for transmission from said wireless device, said applying operation occurring at an onset of said arc duration with an application of said delay component followed by said gain component such that application of said sequence of gains to said pre-adjusted analog signal occurs when said gain arc indicates said low instantaneous signal power.