Wireless communication apparatus, antenna calibration...

Details Wireless communication apparatus, antenna calibration... Wireless communication apparatus, antenna calibration...

2006-10-05

2011-10-11

Odom, Curtis (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S295000, C375S299000, C375S347000, C375S349000, C455S101000, C455S103000, C455S500000, C455S526000

Reexamination Certificate

active

08036299

ABSTRACT:
Reversibility in the directivity in the event of transmission/reception through a multi-antenna system is well suitably compensated for by executing self-calibration. A branch is set to a reference branch, and a forward loopback transfer function and a backward loopback transfer function are acquired, whereby per-branch calibration factors are calculated. Subsequently, an other branch is set to a reference branch, and calibration factors are calculated in a similar manner. Then, the calibration factor for the reference branch is corrected in accordance with the secondly obtained calibration factor so that a calibration condition is satisfied.

REFERENCES:
patent: 2003/0227408 (2003-12-01), Sanada et al.
patent: 2006/0209765 (2006-09-01), Li et al.
patent: 2002-44051 (2002-02-01), None
patent: 2003-124731 (2003-04-01), None
patent: 2003-264492 (2003-09-01), None
patent: 2004-260373 (2004-09-01), None
IEEE (The Institute of Electrical and Electronics Engineers) 802.11 (http://radio3.ee.uec.ac.ip/IEICE—TB—web.pdf).

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