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. 27, 2012
Filed:
Oct. 27, 2010
Leslie Catherine Muscha, Sunnyvale, CA (US);
Leslie Catherine Muscha, Sunnyvale, CA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
Apparatus and method for a limiting amplifier with improved phase noise. The improved limiting amplifier includes an input port, an output port, and one or more cascaded gain stages. The input of a first gain stage is connected to the input port of the limiting amplifier. The output of a last gain stage is connected to the output port of the limiting amplifier. Among the cascaded gain stages, an output of each gain stage is connected to an input of an adjacent gain stage. Each gain stage i, 1<i<n−1, is configured so that it is capable of selecting at least one lowpass filter corner frequency ω, and thereby reducing the phase noise of the gain stage through the broadband noise reduction for frequencies greater than ω. Here, ωis selected from a plurality of values associated with the gain stage to optimize the phase noise of the limiting amplifier by trading off reducing the broadband noise of the gain stage versus maintaining a sufficient output slew-rate of the gain stage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile