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Machine translation
1. (WO1997005695) FIELD EFFECT TRANSISTOR CABLE TELEVISION LINE AMPLIFIER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/005695    International Application No.:    PCT/US1996/012186
Publication Date: 13.02.1997 International Filing Date: 26.07.1996
Chapter 2 Demand Filed:    27.02.1997    
IPC:
H03F 3/193 (2006.01), H03F 3/26 (2006.01)
Applicants: SCIENTIFIC-ATLANTA, INC. [US/US]; One Technology Parkway, South, Norcross, GA 30092-2967 (US)
Inventors: COWEN, Martin, A.; (US).
SICLARI, Scott, R.; (US).
THOMPSON, Leo, J.; (US).
VENEMAN, Scott, R.; (US)
Agent: FISHER, Daniel, E.; Banner & Allegretti, Ltd., Suite 1100, 1001 G Street, N.W., Washington, DC 20001 (US)
Priority Data:
60/001,557 27.07.1995 US
  25.07.1996 US
Title (EN) FIELD EFFECT TRANSISTOR CABLE TELEVISION LINE AMPLIFIER
(FR) AMPLIFICATEUR DE LIGNE DE CABLODIFFUSION, A TRANSISTORS A EFFET DE CHAMP
Abstract: front page image
(EN)An amplifier circuit for a cable access television line amplifier includes a first cascode amplifier (Q1, Q3) and a second cascode amplifier (Q2, Q4) coupled in a push-pull arrangement. An alternative amplifier circuit includes a first transimpedance amplifier (Q1) and a second transimpedance amplifier (Q2) coupled in a push-pull arrangement. The first transimpedance amplifier further includes a field effect transistor (Q3) as an active load so as to provide feedback and the second transimpedance amplifier further includes a field effect transistor (Q4) as an active load so as to provide feedback.
(FR)L'invention concerne un circuit amplificateur d'amplificateur de ligne de câblodiffusion, qui comporte un premier amplificateur en cascade (Q1, Q3) et un second amplificateur en cascade (Q2, Q4) couplé selon une configuration push-pull. Un autre circuit amplificateur comporte un premier amplificateur d'adaptation d'inhérence (Q1) et un second amplificateur d'adaptation d'impédance (Q2) couplés selon une configuration push-pull. Le premier amplificateur d'adaptation d'impédance comporte également un transistor à effet de champ (Q3) faisant office de charge active pour assurer une rétroaction, et le second amplificateur d'adaptation d'impédance comporte un transistor à effet de champ (Q4) faisant office de charge active pour assurer une rétroaction.
Designated States: AU, CA, JP.
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)