Invention Grant
- Patent Title: Calibration-less transmit beamforming
- Patent Title (中): 无校准发射波束成形
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Application No.: US12543566Application Date: 2009-08-19
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Publication No.: US08548379B2Publication Date: 2013-10-01
- Inventor: Hang Jin , John Grabner
- Applicant: Hang Jin , John Grabner
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04B5/00
- IPC: H04B5/00

Abstract:
A calibration-less transmit beamforming apparatus and method are provided. In a wireless communication device that comprises a plurality of antennas, a gain block is provided in the front-end module associated with each antenna and the same gain block is used during transmit and receive operations. As a result, the transmit phase offset and receive phase offset for each antenna are made to be equal, thereby achieving conditions for transmit beamforming without the need for complex antenna calibration algorithms and hardware.
Public/Granted literature
- US20110045787A1 Calibration-Less Transmit Beamforming Public/Granted day:2011-02-24
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