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. 22, 1979
Filed:
Jun. 05, 1978
Tuh-Kai Koo, Colorado Springs, CO (US);
NCR Corporation, Dayton, OH (US);
Abstract
A semiconductor tunable capacitor is described. This tunable capacitor employs a plurality of metal-insulator-semiconductor (MIS) capacitive segments and each element has a first and a second value of capacitance. The solid state capacitor employs a plurality of tuning terminals and a single capacitor terminal. Tuning signals are applied to each of the tuning terminals for switching that capacitive segment into its high or low capacitive state. The capacitor terminal is capacitively connected to each capacitive segment and is employed for summing the individual values of capacitance into a total value of capacitance. An MNOS capacitor is shown as the preferred embodiment.