The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2012
Filed:
Aug. 31, 2009
Thomas J. Kundmann, Cary, IL (US);
Gregory T. Nash, Arlington Heights, IL (US);
Aaron W. Netsell, Woodstock, IL (US);
Thomas J. Kovarik, Grayslake, IL (US);
Thomas J. Kundmann, Cary, IL (US);
Gregory T. Nash, Arlington Heights, IL (US);
Aaron W. Netsell, Woodstock, IL (US);
Thomas J. Kovarik, Grayslake, IL (US);
Motorola Mobility LLC, Libertyville, IL (US);
Abstract
A method, a system and a device for implementing a scalable, self-calibrating and configuring, radio frequency head in a wireless base station that performs phase calibration for coherent combining of a pair of transmitter outputs. Configurable Antenna Calibration (CAC) logic initiates phase calibration for coherent combining by selecting a first configuration and triggering the transmission of a reference signal by radio frequency (RF) transmitters using different sub-carriers. The CAC logic generates a vector of phase values by comparing the reference signal with the respective signals received by a calibration receiver. The CAC logic also generates calibration coefficients for coherent combining by normalizing the phase values. In addition, a passive combiner mechanism is employed to implement coherent combining. The CAC logic performs calibration of smart antennas by providing calibration coefficients via a second configuration which utilizes both a calibration transmitter and the calibration receiver.