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. 28, 2020
Filed:
Oct. 16, 2017
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Toshiki Kishi, Tokyo, JP;
Munehiko Nagatani, Tokyo, JP;
Shinsuke Nakano, Tokyo, JP;
Hiroaki Katsurai, Tokyo, JP;
Masafumi Nogawa, Tokyo, JP;
Hideyuki Nosaka, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A driver circuitincludes a plurality of cascode-connected NMOS transistors, a modulating signal Vis applied to a gate terminal of a lowermost stage transistor Tlocated at a lowermost stage out of the NMOS transistors, and an upper stage bias potential Vthat is a sum of a minimum gate-source voltage Vand a maximum drain-source voltage Vof a transistor (T) located immediately below an upper stage transistor located at an upper stage above the lowermost stage transistor of the NMOS transistors is applied to the upper stage transistor T.