Amplifier stage with constant input impedance

Details Amplifier stage with constant input impedance Amplifier stage with constant input impedance

1998-07-22

1999-10-26

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, H03F 345

Patent

active

059735627

ABSTRACT:
The amplifier stage of the invention has a first and a second differential amplifier branch and a first and a second impedance-burdened branch. The first impedance-burdened branch is connected in parallel with the input impedance of the first differential amplifier branch, and the second impedance-burdened branch is connected in parallel with the input impedance of the second differential amplifier branch. As a result, it is possible to maintain the amplifier parameters largely constant.

REFERENCES:
patent: 3760194 (1973-09-01), Lutz et al.
patent: 4277756 (1981-07-01), Kriedt et al.
patent: 4410859 (1983-10-01), Kuwahara

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