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. 14, 2001
Filed:
Oct. 01, 1997
Raymond Louis Barrett, Jr., Ft. Lauderdale, FL (US);
James G. Mittel, Lake Worth, FL (US);
Barry W. Herold, Delray Beach, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A selective call receiver (,) includes a radio receiver (,) and a processor (,). The radio receiver includes an antenna (,), a combination circuit (,), a bandpass filter (,), mixers (,), analog-to-digital converters (,), digital mixers (,), a second combination circuit (,), and a digital-to-analog converter (,). The combination circuit receives an analog signal from the antenna and combines the same with an analog feedback signal generated by the digital-to-analog converter. The bandpass filter filters the output of the combination circuit and supplies its output to the mixers which down-convert the signal to baseband signals. These signals are modified by the analog-to-digital converters to digital signals which are up-converted by the digital mixers. The outputs of the digital mixers are combined by the second combination circuit to a digital output that is modified by the digital-to-analog converter to the analog feedback signal.