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:
Apr. 27, 2004
Filed:
Feb. 02, 2000
Applicant:
Inventors:
Chien-Meen Hwang, San Jose, CA (US);
Eugen Gershon, San Jose, CA (US);
Assignee:
Legerity, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 ; H04L 2/722 ; G06F 1/717 ;
U.S. Cl.
CPC ...
H04L 7/00 ; H04L 2/722 ; G06F 1/717 ;
Abstract
A demodulation circuit for demodulating a frequency diverse complex modulated carrier comprises an A/D converter generating a series of samples representing the modulated carrier, a mixer operating to mix the series of samples with a sine wave of one fourth the sampling frequency represented by a series of sine wave values occurring at the sampling frequency, and a decimation filter operating at a decimation factor equal to the sampling frequency divided by the frequency difference between adjacent sub-spectra for folding the sub-spectra and retaining a portion of the mixed down series of samples.