Invention Grant
US08903014B2 Communications device having controller to correct an initial IQ imbalance and associated methods
有权
通信设备具有用于校正初始IQ不平衡和相关方法的控制器
- Patent Title: Communications device having controller to correct an initial IQ imbalance and associated methods
- Patent Title (中): 通信设备具有用于校正初始IQ不平衡和相关方法的控制器
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Application No.: US13397067Application Date: 2012-02-15
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Publication No.: US08903014B2Publication Date: 2014-12-02
- Inventor: Khurram Muhammad , Oleksiy Kravets
- Applicant: Khurram Muhammad , Oleksiy Kravets
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L25/03 ; H04L25/49
Abstract:
A communications device includes a plurality of wireless transmitters operable at different respective frequencies and each configured to generate respective IQ signals having an initial IQ imbalance. The communications device also includes a frequency tunable auxiliary receiver, and a controller. The controller is configured to selectively couple a given wireless transmitter to the frequency tunable auxiliary receiver and tune the frequency tunable auxiliary receiver to a frequency of the given wireless transceiver, and apply predistortion to the given wireless transmitter based upon the initial IQ imbalance to reduce the initial IQ imbalance.
Public/Granted literature
- US20130208770A1 COMMUNICATIONS DEVICE HAVING CONTROLLER TO CORRECT AN INITIAL IQ IMBALANCE AND ASSOCIATED METHODS Public/Granted day:2013-08-15
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