APPARATUS AND METHODS FOR ENVELOPE TRACKING

Title:

APPARATUS AND METHODS FOR ENVELOPE TRACKING

Document Type and Number:

WIPO Patent Application WO/2012/148918

Kind Code:

A3

Abstract:

Apparatus and methods for envelope tracking are disclosed. In one embodiment, a power amplifier system including a power amplifier (32) and an envelope tracker (30) is provided. The power amplifier is configured to amplify a radio frequency (RF) signal, and the envelope tracker is configured to control a supply voltage of the power amplifier using an envelope of the RF signal. The envelope tracker includes a buck converter (73) for generating a buck voltage from a battery voltage and a digital-to-analog conversion (DAC) module (78, 79) for adjusting the buck voltage based on the envelope of the RF signal to generate the supply voltage for the power amplifier.

Inventors:

BALTEANU FLORINEL G (CA)
KHESBAK SABAH (US)
TKACHENKO YEVGENIY A (US)
THOMPSON ROBERT JOHN (US)
RIPLEY DAVID STEVEN (US)

Application Number:

PCT/US2012/034820

Publication Date:

March 14, 2013

Filing Date:

April 24, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SKYWORKS SOLUTIONS INC (US)
BALTEANU FLORINEL G (CA)
KHESBAK SABAH (US)
TKACHENKO YEVGENIY A (US)
THOMPSON ROBERT JOHN (US)
RIPLEY DAVID STEVEN (US)

International Classes:

H03F1/30; H03F1/32; H03F3/20

Foreign References:

US6914487B1	2005-07-05
US20080278136A1	2008-11-13
US20090088096A1	2009-04-02
US7782141B2	2010-08-24

Other References:

F. WANG.: "A Monolithic High-Efficiency 2.4-GHz 20-dBm SiGe BiCMOS Envelope-Tracking OFDM Power Amplifier", IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 42, no. 6, June 2007 (2007-06-01), pages 1271 - 1281

Attorney, Agent or Firm:

ALTMAN, Daniel, E. (LLP2040 Main Street,Fourteenth Floo, Irvine CA, US)

Download PDF:

View/Download PDF PDF Help

Previous Patent: EDGE CONNECTOR FOR SHIELDED ADAPTER

Next Patent: SYSTEMS AND METHODS FOR OVERHEAD IMAGING AND VIDEO