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:
Oct. 20, 1987
Filed:
Sep. 26, 1985
Applicant:
Inventors:
Inder J Bahl, Roanoke, VA (US);
Edward L Griffin, Roanoke, VA (US);
Assignee:
ITT Gallium Arsenide Technology Center, Roanoke, VA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
174 / ; 357 68 ;
Abstract
A semiconductor chip housing provides hermetic sealing and appropriate electrical characteristics for use at high frequencies. The housing comprises a substrate in which the chip is mounted and a cylindrical tube having a top cover and extending above the substrate which impinges on a base and thus hermetically seals the chip. Microthin leads extend from the substrate periphery to the chip. The leads carrying high frequency signals have notches therein to compensate for the impedance introduced by the tube and to enable the microstrip to present a constant impedance at high frequencies throughout its length.