Title:
APPARATUS AND METHOD FOR ENVELOPING TRACKING CALIBRATION
Document Type and Number:
WIPO Patent Application WO/2014/178487
Kind Code:
A1
Abstract:
An apparatus for envelope tracking calibration for use in a wireless communication is provided. The apparatus includes a transmission signal path configured to carry a transmission signal to an antenna. An envelope signal path configured to feed an envelope signal with an envelope tracking power amplifier. A controller is configured to transmit a normal envelope signal being generated in a normal operation mode and measure a first Adjacent Channel Leakage Ratio (ACLR) corresponding to the normal envelope signal. The controller is further configured to transmit a comparison envelope signal being generated in a comparison operation mode and measure a second ACLR corresponding to the comparison envelope signal. The controller is configured to calculate a time misalignment between the transmission signal path and the envelope signal path based on a difference between the first and second ACLRs.
Inventors:
ZHANG YAMING (US)
INTERRANTE JOHN ALEX (US)
LOH LUP MENG (US)
HURLEY WILLIAM (US)
INTERRANTE JOHN ALEX (US)
LOH LUP MENG (US)
HURLEY WILLIAM (US)
Application Number:
PCT/KR2013/008318
Publication Date:
November 06, 2014
Filing Date:
September 13, 2013
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04B7/005; H04B17/00
Foreign References:
| US20090097591A1 | 2009-04-16 | |||
| KR20130031465A | 2013-03-29 | |||
| US20100105338A1 | 2010-04-29 | |||
| US20130027129A1 | 2013-01-31 |
Other References:
HAIYING CAO ET AL.: "Digital Predistortion for High Efficiency Power Amplifier Architectures Using a Dual-Input Modeling Approach", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 60, no. 2, February 2012 (2012-02-01), pages 361 - 369, XP011398812, Retrieved from the Internet
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (Gyeonghuigung-gilJongro-gu, Seoul 110-062, KR)
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