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:
May. 29, 2012
Filed:
Jan. 25, 2006
Robin Wilson, Gloucestershire, GB;
David Miles, Gloucestershire, GB;
Robin Wilson, Gloucestershire, GB;
David Miles, Gloucestershire, GB;
Broadcom Corporation, Irvine, CA (US);
Abstract
A demodulator for demodulating a modulated signal has a peak detector () with an input () coupled to receive the modulated signal and an output () to supply a peak detector output signal. The peak detector has a charge storer () coupled to the peak detector output so that the peak detector output signal is provided by a voltage across the charge storer () and a comparator () having a first comparator input coupled to the peak detector input to receive the modulated signal and a second comparator input coupled to the peak detector output to receive the peak detector output signal. The comparator () provides a comparison signal representing a comparison between the voltage of the modulated signal and the peak detector output signal. A charging controller (and) charges the charge storer () so as to increase the output voltage when the comparator () provides a first signal indicating that the voltage of the modulated signal is higher than the voltage of the peak detector output signal and discharges the charge storer () so as to decrease the output voltage when the comparator () provides a second signal indicating that the voltage of the modulated signal is lower than the voltage of the peak detector output signal.