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. 20, 2003
Filed:
Feb. 07, 2002
Applicant:
Inventors:
Kelvin Kai Tuan Yan, High Point, NC (US);
Ashraf Rozek, Greensboro, NC (US);
Kihong Kim, Greensboro, NC (US);
Assignee:
RF Micro Devices, Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 ; H03G 3/12 ; H03G 3/10 ;
U.S. Cl.
CPC ...
H03F 3/04 ; H03G 3/12 ; H03G 3/10 ;
Abstract
An input amplifier stage couples its output power to a second gain stage through a transformer. The transformer coupling allows for the removal of a diode voltage drop at a second gain stage, thereby allowing the collector of the transistor in the second stage to have a larger voltage swing.