EP 3155721 A4 20180207 - METHOD AND APPARATUS FOR ENVELOPE SHAPING IN ENVELOPE TRACKING POWER AMPLIFICATION
Title (en)
METHOD AND APPARATUS FOR ENVELOPE SHAPING IN ENVELOPE TRACKING POWER AMPLIFICATION
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HÜLLKURVENFORMGEBUNG IN DER HÜLLKURVENVERFOLGUNGSLEISTUNGSVERSTÄRKUNG
Title (fr)
PROCÉDÉ ET APPAREIL POUR LA FORMATION D'ENVELOPPE DANS L'AMPLIFICATION DE PUISSANCE À SUIVI D'ENVELOPPE
Publication
Application
Priority
CN 2014079807 W 20140613
Abstract (en)
[origin: WO2015188363A1] A method, corresponding apparatuses, and a non-transitory computer readable medium for envelope shaping in envelope tracking power amplification are provided. The method comprises detecting, based on a shaping threshold, one or more troughs in an envelope signal representing an envelope of a signal to be amplified by an envelope tracking power amplifier connected with an envelope tracking supply modulator. The method also comprises clipping the one or more detected troughs in the envelope signal. The method further comprises shaping the envelope signal for the envelope tracking supply modulator by processing a delayed version of the envelope signal with the one or more clipped troughs. With the claimed inventions, the efficiency and linearity of an envelope tracking power amplifier could be improved.
IPC 8 full level
H03F 1/02 (2006.01); H03F 1/30 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01)
CPC (source: EP)
H03F 1/0222 (2013.01); H03F 1/30 (2013.01); H03F 3/195 (2013.01); H03F 3/245 (2013.01); H03F 2200/102 (2013.01); H03F 2200/18 (2013.01); H03F 2200/462 (2013.01)
Citation (search report)
- [Y] US 2012269240 A1 20121025 - BALTEANU FLORINEL G [CA], et al
- [XAY] DONGSU KIM ET AL: "Optimization for Envelope Shaped Operation of Envelope Tracking Power Amplifier", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, PLENUM, USA, vol. 59, no. 7, 13 July 2011 (2011-07-13), pages 1787 - 1795, XP011369961, ISSN: 0018-9480, DOI: 10.1109/TMTT.2011.2140124
- See references of WO 2015188363A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015188363 A1 20151217; EP 3155721 A1 20170419; EP 3155721 A4 20180207
DOCDB simple family (application)
CN 2014079807 W 20140613; EP 14894315 A 20140613