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US Patent 8717101 Apparatus and methods for biasing power amplifiers

Patent 8717101 was granted and assigned to Skyworks Solutions, Inc. on May, 2014 by the United States Patent and Trademark Office.

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Patent abstract

Apparatus and methods for biasing a power amplifier are disclosed. In one embodiment, a method of biasing a power amplifier includes shaping an enable signal using a time-dependent signal generator to generate a control current, amplifying the control current using a current amplifier to generate a correction current, and generating a bias current for a power amplifier using a primary biasing circuit. The primary biasing circuit is configured to use the correction current to correct for a variation in gain of the power amplifier when the power amplifier is enabled.

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