An envelope tracking (ET) amplifier apparatus is provided. The ET amplifier apparatus
includes an amplifier circuit configured to amplify a radio frequency (RF) signal based on a …

HO3F 3/189(2006.01) HO3F 1/02(2006.01) GOIR 1/30(2006.01) HO3F 3/24(2006.01) HOZF
3/68(2006.01) HO3F 3/19(2006.01) HO3F 3/20(2006.01)(52) US CI. CPC HO3F 1/0227 …

An envelope tracking (ET) circuit is provided. In the ET circuit, a number of amplifier circuits
are configured to amplify a radio frequency (RF) signal simultaneously to generate multiple …

A switching regulator configured to generate an output voltage based on an input voltage is
provided. The switching regulator includes: an inductor; and a capacitor circuit configured to …

Envelope tracking systems for power amplifiers are provided herein. In certain
embodiments, an envelope tracker supplies power to a power amplifier that amplifies an RF …

(57) ABSTRACT A voltage generation circuit and related envelope tracking (ET) amplifier
apparatus is provided. In examples discussed herein, a voltage generation circuit can be …

Envelope tracking systems for power amplifiers are provided herein. In certain
embodiments, an envelope tracker is provided for a power amplifier that amplifies an RF …

A multi-bandwidth envelope tracking (ET) integrated circuit (IC)(ETIC) is provided. The multi-
bandwidth ETIC may be coupled to an amplifier circuit (s) for amplifying a radio frequency …

A distributed envelope tracking (ET) amplifier circuit and related apparatus are provided.
The distributed ET amplifier apparatus includes an amplifier circuit configured to amplify a …

H04B1/00—Details of transmission systems, not covered by a single one of groups
H04B3/00-H04B13/00; Details of transmission systems not characterised by the medium …