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:
Aug. 02, 2005
Filed:
Sep. 26, 2003
Applicant:
Jih-shin Ho, Kaohsiung, TW;
Inventor:
Jih-Shin Ho, Kaohsiung, TW;
Assignee:
King Billion Electronics Co., Ltd., Hsinchu Hsien, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F003/68 ;
U.S. Cl.
CPC ...
Abstract
An amplifier circuit with a shared current source a first amplifier, a second amplifier and a current source. The output of the first amplifier () is coupled to the current source (). When the second amplifier () is cascaded onto the first amplifier (), the current source () is also connected to the second amplifier (), such that these two amplifiers can share a common drive current, so the power dissipated by these two amplifiers is greatly reduced. This technique is implemented with Class A amplifiers, Class B amplifiers, Class AB amplifiers or a combination of the above amplifiers in cascade.