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:
Jul. 13, 1999
Filed:
Jun. 27, 1997
Jeffrey C Durec, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A low-noise amplifier circuit (40) and a method for generating a bias voltage within the amplifier circuit (40). The amplifier circuit includes a cascode configured circuit (15) having a common emitter transistor (12) biased by a current sourcing circuit (43) and a common base transistor (13) biased by a bias voltage generator (21). The current sourcing circuit (43) measures a base current of the common emitter transistor (12) and transmits the base current to a current mirror (41). Further, a current source (50) transmits a bias current to the current mirror (41). The current mirror sums the currents from the current sourcing circuit (43) and the current mirror (41) and generates a mirror output current. A portion of the mirror output current drives the bias voltage generator (21) and a portion of the mirror output current serves as the base current of the common base transistor (13).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile