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:
Mar. 13, 2001
Filed:
May. 29, 1998
Steven C. Jasper, Hoffman Estates, IL (US);
Isam R. Makhlouf, Morton Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna array portion of a communication device receives a desired signal and an interfering signal. The unweighted desired and interfering signals from a first antenna (,) are then combined in a summer (,) with weighted versions of the signals from a second antenna (,) to produce a received RF signal (,). The signal-to-noise ratio (SNR) of the received RF signal (,) is then estimated using a spectral analysis technique. This estimate, along with the complex weights applied to the signal from the second antenna, is then stored. Utilizing feedback and a methodology for searching through a range of sets of complex weights, the weights optimizing the SNR are determined and used to weight subsequent signals from the second antenna. In this way the antenna array's gain pattern is adjusted to maximize the SNR of the desired signal