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:
Apr. 11, 1995
Filed:
Mar. 28, 1994
Applicant:
Inventors:
Benjamin S Shih, Pure, JP;
Daniel E Oates, Belmont, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ; H01P / ;
U.S. Cl.
CPC ...
333161 ; 333235 ; 333246 ;
Abstract
A stripline device using at least one strip conductor and at least one ground plane separated therefrom by a dielectric substrate. The ground plane is caused to move relative to the strip conductor so as to change the propagation velocity of the stripline device. In a particular embodiment, a layer of piezoelectric material is positioned adjacent the ground plane and a voltage applied to the piezoelectric layer causes its dimensions to change and provide a changing air gap between the substrate and the ground plane to change the propagation velocity accordingly.