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:
Jun. 07, 2005
Filed:
Mar. 17, 2003
Bernard Geller, Durham, NC (US);
Glen C. Metheny, Raleigh, NC (US);
Daniel Shaw, Louisburg, NC (US);
Bernard Geller, Durham, NC (US);
Glen C. Metheny, Raleigh, NC (US);
Daniel Shaw, Louisburg, NC (US);
Mitsubishi Electric & Electronics U.S.A., Inc., Cypress, CA (US);
Abstract
A system for impedance matched switching of an input signal from an input source includes a first switch, such as an FET, for controllably switching the input signal from an input terminal connected to the input source to an output terminal, the switching being controlled according to a control voltage. The system further includes a second switch, such as an FET, for controllably switching a matching impedance between the input terminal and ground according to the control voltage. When the input signal is prevented from passing from the input terminal to the output terminal by the first switch, the input signal passes through the matching impedance, which has an impedance characteristic substantially matched to an impedance characteristic of the input source.