Title:
IMAGE DISTORTION CORRECTION IN A WIRELESS TERMINAL
Document Type and Number:
WIPO Patent Application WO/2019/001595
Kind Code:
A1
Abstract:
A circuit in a wireless communications terminal/device and a method is described for reducing an image distortion. By measuring three gain mismatches of I path and Q path of a transceiver, and estimating a value of an IQ mismatch coefficient based on the three gain mismatches; and applying a measurement adjustment to the I path or the Q path based on the value of the IQ mismatch coefficient, the image distortion is reduced.
Inventors:
JIANG HONG (US)
FORRESTER JAMIL MARK (US)
ZHANG ZHIHANG (US)
FORRESTER JAMIL MARK (US)
ZHANG ZHIHANG (US)
Application Number:
PCT/CN2018/103368
Publication Date:
January 03, 2019
Filing Date:
August 30, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B17/14; H04B17/21; H04L27/34
Foreign References:
| CN104247281A | 2014-12-24 | |||
| CN104584499A | 2015-04-29 | |||
| US20150215150A1 | 2015-07-30 | |||
| CN102843321A | 2012-12-26 | |||
| US20160359614A1 | 2016-12-08 | |||
| US20060088136A1 | 2006-04-27 | |||
| US20090010358A1 | 2009-01-08 |
Other References:
See also references of EP 3616338A4
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