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. 22, 2003
Filed:
Dec. 14, 1998
Qingfeng Tang, Farmington Hills, MI (US);
Lear Automotive Dearborn, Inc., Southfield, MI (US);
Abstract
A low power transmitter useful for vehicle remote keyless entry systems, for example, includes a transmitter circuit portion and a gain control circuit portion. The gain control circuit portion preferably includes an inductive load that introduces a resonant frequency that provides radio frequency gain control. The transmitter circuit portion preferably includes a transistor having a collector node and an emitter node. The gain controller circuit preferably includes a capacitive load coupled between the emitter node and the collector node of the transistor. The inductive load preferably is coupled between the emitter node of the transistor and ground.