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. 07, 1982
Filed:
Jan. 30, 1981
Martin J Reid, Chelmsford, MA (US);
Alpha Industries, Inc., Woburn, MA (US);
Abstract
An N or N.sup.+ type semiconductor substrate has a P-type layer diffused therein to form a PIN junction that is etched out between adjacent mesas and filled in with glass to form adjacent diodes between top and bottom surfaces of the substrate. The bottom surface is metallized. The top surface carries a conducting layer interconnecting the adjacent P-type portions of the mesas. This conducting layer has end portions connected to a respective diode of end width and length joined by an intermediate portion of intermediate width and length. The end width and length is less than that of the intermediate width and length, respectively, so that the end portions present an inductive reactance at microwave frequencies between a respective diode and the intermediate portion, and the intermediate portion forms a transmission line with the conducting layer on the bottom surface having a characteristic impedance of 50 ohms while that of the transmission lines formed by each end portion and the conducting layer on the bottom surface is substantially 100 ohms.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile