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. 31, 2010
Filed:
Dec. 29, 2004
Aaron W. Netsell, Woodstock, IL (US);
Neil R. Peplinski, North Barrington, IL (US);
Aaron W. Netsell, Woodstock, IL (US);
Neil R. Peplinski, North Barrington, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A block edge detector () determines () whether a wireless communication transmission with a first modulation having excess spectral emissions will be transmitted at a frequency on a block edge (). In response, a modulator selector () changes () the wireless communication transmission to a second modulation with lessened spectral emissions. Preferably, the second modulator () is operably coupled to an alternative lookup table () wherein phase trajectory entries likely to cause excess spectral emissions such as spurious emissions are smoothed. The entries may be smoothed by filtering, non-linear extrapolation, and/or linear extrapolation. Alternatively, the second modulator () uses an alternative lookup table () that is a GMSK modulator with BT less than 0.3.