Title:
APPARATUS AND METHOD FOR MODULATING SUPPLY FOR A POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2013/055171
Kind Code:
A1
Abstract:
An apparatus and method for improving the efficiency of a power supply modulator for modulating a supply voltage of a power amplifier are provided. The apparatus for generating a supply voltage includes a Switching Mode Power Supplier (SMPS) module for generating a current of a power supply signal, and a linear regulator for generating a source current for supplementing an insufficient amount of the current generated by the SMPS module and a sink current for eliminating an excessive amount of the current generated by the SMPS module. The SMPS module generates the current of the power supply signal by selecting at least one of a plurality of power supplies that have different voltages according to a voltage level of an input signal of the SMPS module.
Inventors:
PARK BOK-JU (KR)
KIM DONG-KI (KR)
PAEK JI-SEON (KR)
KIM DONG-KI (KR)
PAEK JI-SEON (KR)
Application Number:
PCT/KR2012/008355
Publication Date:
April 18, 2013
Filing Date:
October 15, 2012
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H03F1/06; H03F3/24
Foreign References:
| US5309082A | 1994-05-03 |
Other References:
STAUTH J.T AL.: "Optimum Biasing for Parallel Hybrid Switching-Linear Regulato rs", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 22, no. 5, September 2007 (2007-09-01), pages 1978 - 1985, XP011191734
JINSUNG CHOI ET AL: "A Polar Transmitter With CMOS Programmable Hysteretic-Controlle d Hybrid Switching Supply Modulator for Multistandard Applications", IEE E TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 57, no. 7, July 2009 (2009-07-01), pages 1675 - 1686, XP011258456
HANNINGTON G. ET AL.: "High-Efficiency Power Amplifier Using Dynamic Power-Supply Volt age for CDMA Applications", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 47, no. 8, August 1999 (1999-08-01), pages 1471 - 1476, XP000846061
JEFFREY S WALLING ET AL: "Linearizing CMOS Switching Power Amplifiers Using Supply Regu lators", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, vol. 57, no. 7, July 2010 (2010-07-01), pages 497 - 501, XP011334225
See also references of EP 2766987A4
JINSUNG CHOI ET AL: "A Polar Transmitter With CMOS Programmable Hysteretic-Controlle d Hybrid Switching Supply Modulator for Multistandard Applications", IEE E TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 57, no. 7, July 2009 (2009-07-01), pages 1675 - 1686, XP011258456
HANNINGTON G. ET AL.: "High-Efficiency Power Amplifier Using Dynamic Power-Supply Volt age for CDMA Applications", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 47, no. 8, August 1999 (1999-08-01), pages 1471 - 1476, XP000846061
JEFFREY S WALLING ET AL: "Linearizing CMOS Switching Power Amplifiers Using Supply Regu lators", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, vol. 57, no. 7, July 2010 (2010-07-01), pages 497 - 501, XP011334225
See also references of EP 2766987A4
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (Gyeonghuigung-gilJongro-gu, Seoul 110-062, KR)
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Claims: