APPARATUS AND METHODS FOR BIAS SWITCHING OF POWER AMPLIFIERS

APPARATUS AND METHODS FOR BIAS SWITCHING OF POWER AMPLIFIERS

Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, a power management circuit that controls a voltage level of a supply voltage...

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Hauptverfasser: Anthony, Edward James, Jayaraman, Srivatsan, Gebeyehu, Netsanet
Format: Patent
Sprache:eng
Schlagworte:
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator Anthony, Edward James
Jayaraman, Srivatsan
Gebeyehu, Netsanet
description Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, a power management circuit that controls a voltage level of a supply voltage of the power amplifier, and a bias control circuit that biases the power amplifier. The power management circuit is operable in multiple supply control modes, such as an average power tracking (APT) mode and an envelope tracking (ET) mode. The bias control circuit is configured to switch a bias of the power amplifier based on the supply control mode of the power management circuit.
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subjects AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title APPARATUS AND METHODS FOR BIAS SWITCHING OF POWER AMPLIFIERS
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