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:
Aug. 31, 2004
Filed:
Jul. 31, 2002
Gerald R. Fischer, Playa Del Rey, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A switched low pass filter ( ) minimizes transients generated during filter switching events and eliminates active circuit random noise. The switched low pass filter ( ) includes a filter input terminal ( ) for receiving an input base band signal, and an RC circuit (R , C , S , S ) for receiving the input base band signal and for passing only a filtered portion of the input base band signal depending on a wide, mid or narrow band mode of filter operation. The switched low pass filter ( ) also includes a transient reduction circuit ( ) in switchable communication with the RC circuit (R , C , S , S ) for minimizing transients and switching events caused by transitioning to the mid and narrow band modes of filter operation.