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:
Dec. 14, 1999
Filed:
Aug. 15, 1997
Frank Chethik, Palo Alto, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A programmable digital baseband receiver that processes a large number of signal waveforms and data rates. Programmable elements of the receiver implement coherent signal detection, automatic gain control and decision processing that permits processing of a large number of signal bandwidth efficient QAM and similar signal formats. The receiver comprises a threshold array having a plurality of programmable complex threshold detectors, and selectable decoder tree logic structures embodied in threshold interpreters. Each programmable complex threshold detector is a fully programmable I, Q threshold detector employing programmable I, Q sign threshold detectors that is adapted to the received complex baseband signal constellation.