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. 30, 2000
Filed:
Sep. 17, 1998
Applicant:
Inventors:
Klaus Aufinger, Ottobrunn, DE;
Herbert Knapp, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257728 ; 257583 ; 257592 ; 257565 ;
Abstract
A structure for a microwave device in which the minimum noise figure is reduced in that underneath the base terminal surface of a transistor, a highly-doped trenched layer is formed, which layer is connected to a reference potential in the vicinity of the base terminal surface via a standard collector contact.