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:
Nov. 06, 2012
Filed:
Jul. 17, 2009
Jon S. Martens, San Jose, CA (US);
Helen Chau, San Jose, CA (US);
David A. Rangel-guzman, San Jose, CA (US);
Peter A. Kapetanic, Morgan Hill, CA (US);
Dan Levassuer, Milpitas, CA (US);
Jon S. Martens, San Jose, CA (US);
Helen Chau, San Jose, CA (US);
David A. Rangel-Guzman, San Jose, CA (US);
Peter A. Kapetanic, Morgan Hill, CA (US);
Dan Levassuer, Milpitas, CA (US);
Anritsu Company, Morgan Hill, CA (US);
Abstract
A high speed receiver is provided using two parallel processing paths to enable rapid variable gain control. The parallel processing paths include a first processing path using a high resolution Discrete Fourier Transform (DFT), and a second processing path using a reduced DFT requiring fewer samples than the high resolution DFT. An initial sample of the data is processed using the second processing path with the reduced DFT by comparing a Fourier transform of the initial sample with predetermined threshold values. As a result of the comparison of the Fourier transform of the initial sample with the predetermined threshold values, a gain determination block determines whether a requirement exists for gain ranging. If gain ranging is needed, the gain of the data signal is adjusted and the gain ranging process repeats.