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. 06, 2007
Filed:
Feb. 11, 2005
Applicant:
Henry Z. Liwinski, North Wales, PA (US);
Inventor:
Henry Z. Liwinski, North Wales, PA (US);
Assignee:
Anadigics, Inc., Warren, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable gain amplifier is disclosed where the gain of the amplifier is controlled by a variable emitter resistor that is responsive to a control signal. The variable resistor includes a resistor connected between the collector and emitter of a control transistor. A control signal applied to the base of the control transistor varies the gain of the amplifier from a minimum gain when the control transistor is cut-off to a maximum gain when the control transistor is saturated.