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:
Nov. 09, 1999
Filed:
Apr. 03, 1998
Larry C Leighton, Scottsdale, AZ (US);
Thomas W Moller, Gilroy, CA (US);
Nils af Ekenstam, Solna, SE;
Jan Johansson, Upplands Vasby, SE;
Ericsson Inc., Morgan Hill, CA (US);
Abstract
A plurality of transistor cells (36) formed on a semiconductor substrate (32) are connected to form a radio frequency power transistor device (30), whereby individual conductive paths (38) are formed on one side of the substrate (32) to connect respective common gate terminals (34) of adjacent transistor cells (36) in series. A further conductive path (40) is formed on an opposite side of the substrate connecting respective drain terminals (35) of the transistor cells (36) in parallel. A resistive element (42) is interposed in the conductive path (38) connecting each adjacent pair of gate terminals (34). The conductivity of the respective resistive elements (42) is selected so as to adequately provide a conductive pathway for connecting the respective gate terminal outputs, while being sufficiently resistive such that each gate terminal 34 'sees' an electrical circuit termination.