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Patent Searching and Data


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 (7508 Lyndhurst Lane, PlanoCollin County, Texas, 75025, US)
INTERRANTE, John Alex (2904 Snow Mass Ct, RichardsonCollin County, Texas, 75082, US)
LOH, Lup Meng (8420 Becket Circle, PlanoCollin County, Texas, 75025, US)
HURLEY, William (715 Bear Creek, MurphyCollin County, Texas, 75094, US)
Application Number:
KR2013/008318
Publication Date:
November 06, 2014
Filing Date:
September 13, 2013
Export Citation:
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Assignee:
SAMSUNG ELECTRONICS CO., LTD. (129 Samsung-ro, Yeongtong-guSuwon-si, Gyeonggi-do 443-742, KR)
International Classes:
H04B7/005; H04B17/00
Foreign References:
US20090097591A12009-04-16
KR20130031465A2013-03-29
US20100105338A12010-04-29
US20130027129A12013-01-31
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
See also references of EP 2992616A4
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (2F 28, Gyeonghuigung-gilJongro-gu, Seoul 110-062, KR)
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