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:
Aug. 11, 1992
Filed:
Jan. 15, 1991
Hungkun J Chang, Schaumburg, IL (US);
William K Doss, Mount Prospect, IL (US);
Michael P Nolan, Lake Zurich, IL (US);
Dale R Buchholz, Palatine, IL (US);
Thomas A Freeburg, Arlington Heights, IL (US);
John McKown, Arlington Heights, IL (US);
Richard E White, Cary, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna selection technique is used in an RF communincation system in which user modules (UM) communicate with at least one node. The UM's and nodes each have multiple antennae. The combination of each UM and node antenna is evaluated at the UM. Based on at least signal quality, the UM selects its antenna and the best node antenna for use. An alternate antenna is selected if a person is determined to be present in a predetermined area adjacent a UM corresponding to a predetermined RF power level.