Broadcom Corporation

Philippe Riondet

Hooman Darabi

Seunghwan Yoon

Henrik Tholstrup Jensen

Alfred Grau Besoli

Alireza Tarighat Mehrabani

Rahul Magoon

Paul Anthony Lettieri

Vipin Aggarwal

Mohsen Pourkhaatoun

Louie Serrano

Min-Chung Ho

Shao-Min Hsu

Eric Raith

A RF transmitter includes a power amplifier that generates a transmit signal modulated with outbound data for transmission to a remote communication device via an antenna section. A supply voltage to power the power amplifier is adjusted based on an average power tracking signal. A reflected power from the antenna section is measured. The average power tracking signal is adjusted based on the reflected power to compensate for the changes in impedance of the antenna section and to maintain a desired linearity.

RF transmitter with average power tracking and methods for use therewith

Embodiments of a two-stage bypass power amplifier are provided. In general, the two-stage bypass power amplifier is configured to receive a RF signal that is to be transmitted to a remote device and provide gain to the RF signal prior to the RF signal being transmitted to the remote device. The two-stage bypass power amplifier is configured to operate efficiently (in terms of power) at two different gain or output power levels and can be extended to operate efficiently at additional gain or output power levels.

Bypass power amplifier for improving efficiency at low power

Aspects of a method and system for closed loop power control in wireless systems are provided. In this regard, an output power of an amplifier may be measured and an indication of the measured power may be compared to a reference signal. The results of the comparison are utilized to generate an error correction factor. The gain of a preamplifier may be adjusted utilizing the error correction factor, where the output of the preamplifier may be input to the amplifier. The error correction factor may be generated via a proportional integral derivative controller. The gain of the preamplifier may be adjusted via at least one control signal, where the at least one control signal may be generated based on a reference control word and the error correction factor. The indication of the measured power and the reference signal may be time aligned.

Method and system for closed loop power control in wireless systems

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Irvine, CA, United States of America

Philippe Riondet