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. 09, 1999
Filed:
Nov. 02, 1995
David L Muri, Sunrise, FL (US);
Charles A Backof, Jr, Coral Springs, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A phase demodulator (101) is used for sensing the phase.sub.-- angle of a phasor represented by the I and Q signals by first producing the analog I and Q signals in a direct conversion receiver (104). A phase generator (106) is used to approximate the angle of the phasor as represented by the I and Q signals by scaling and comparing the magnitudes of the I and Q signals and making decisions based on their relative magnitudes. The scaling includes successive alteration of the magnitude of the I and Q signals.sub.-- depending on their relative magnitudes. A DSP (108) is used to receive this bit stream representation (302) of the phasor and recover the information signal.