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:
Jun. 26, 2001
Filed:
Sep. 30, 1999
Jeff L. Pfeil, Bartlett, IL (US);
Alan P. Rottinghaus, Barrington, IL (US);
Stephen W. Henderson, Chicago, IL (US);
Javier J. Tapia, Wheaton, IL (US);
Motorola, Inc., Scahumburg, IL (US);
Abstract
An apparatus (,) and method dynamically allocates radio frequency receive path resources as required by a programmable location engine (,). The programmable location engine (,) employs cascaded time of arrival and direction of arrival algorithms to determine per remote unit location data. The apparatus (,) employs a phased array antenna (,) and a programmable receiver switching apparatus (,). A plurality of radio frequency receivers (,) receive a plurality of different carriers, such as CDMA carriers, on each of a different phased array antenna element (,). An RF switching matrix (,) and mobile location shared resource controller (,) dynamically switch the plurality of radio frequency receivers (,) to not only receive the different carriers on each of the different phased antenna radio elements to determine time of arrival information, but alternately receive a same carrier signal over all or a portion of the phased array antenna element to determine direction of arrival information.