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:
Sep. 13, 1994
Filed:
Jun. 25, 1993
Kwong-Kit Choi, Tinton Falls, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A circuit incorporating an infrared hot electron transistor having a common base and biasing voltages. In one embodiment, the circuit is configured to take advantage of the photovoltage amplification capabilities of the infrared hot electron transistor. In another embodiment, the infrared hot electron transistor is configured to take advantage of the photovoltaic mode of operation of the infrared hot electron transistor. The present invention can therefore be used to directly replace a photodiode used in infrared detection. The present invention additionally provides an amplified output voltage and permits direct DC coupling to a high gain operational amplifier.