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:
Oct. 02, 2007
Filed:
May. 15, 2002
Brian James Langlais, Mississippi Mills, CA;
Akrum Elkhazin, Toronto, CA;
John Fanson, Ottawa, CA;
Bradley Robert Lynch, Ottawa, CA;
Xi Chu, Ottawa, CA;
Brian James Langlais, Mississippi Mills, CA;
Akrum Elkhazin, Toronto, CA;
John Fanson, Ottawa, CA;
Bradley Robert Lynch, Ottawa, CA;
Xi Chu, Ottawa, CA;
Intellon Corporation, Ocala, FL (US);
Abstract
An analog signal gain control circuit(ASGC) for a digital radio HomePlug orthogonal frequency division multiplexing (OFDM) receiver includes a digital variable gain amplifier (DVGA) to control the gain of a received signal to achieve a desired signal amplitude to match a dynamic range of an analog-to-digital converter (ADC), an inverse scaling stage controlled to inverse-scale the signal output by the ADC, and a two-stage fast attack and slow decay filter that outputs control signals to the DVGA and to the inverse scaling stage. The fast attack and slow decay filter rapidly responds to an increase in signal amplitude and slowly decays the amplitude of the control signal in response to a decrease in input signal amplitude.