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:
May. 03, 1994
Filed:
Oct. 08, 1991
Thomas W Grudkowski, Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A novel heterostructure acoustic charge transport (HACT) device is disclosed which displays both electron and hole transport. The device includes a transducer fabricated on a substrate structure that launches surface acoustic waves. An optional reflector is formed in the substrate structure at an end portion adjacent to the transducer for reflecting the surface acoustic waves. Also included is an electrode configured with the transport channel at an end thereof distal to the transducer for generating electrical signal equivalents of the propagating electrode charge. The device makes use of both the conduction band quantum well to transport electrons and the valance band quantum well to transport holes. In this manner the sampling, processing and detection frequencies of the device can be doubled.