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:
Dec. 30, 2003
Filed:
Jul. 31, 2001
Applicant:
Inventors:
Heng-Yu Jian, Los Angeles, CA (US);
Thomas Marra, San Diego, CA (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/304 ;
U.S. Cl.
CPC ...
G01R 2/304 ;
Abstract
Second-order harmonic tuning of an active device, such as a transistor used in a radio frequency (RF) power amplifier circuit, is accomplished by positioning a quarter-wavelength stub along a transmission line coupled to an output of the device, such that the output is presented with a desired impedance for the second harmonic.