Wide bandwidth attenuator input circuit for a measurement probe

Details Wide bandwidth attenuator input circuit for a measurement probe Wide bandwidth attenuator input circuit for a measurement probe

2007-08-14

2007-08-14

Nguyen, Ha Tran (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

C324S126000

Reexamination Certificate

active

11123752

ABSTRACT:
A wide bandwidth attenuator input circuit for a measurement probe has a Z0attenuator circuit coupled in series with a compensated RC attenuator circuit. The series attenuator elements of the Z0and the compensated RC attenuator circuits are coupled via a controlled impedance transmission line to the shunt attenuator elements of the Z0and the compensated RC attenuator circuits. The shunt element of the Z0attenuator element terminates the transmission line in its characteristic impedance. The junction of the series and shunt attenuator elements are coupled to the input of a buffer amplifier. At low and intermediate frequencies, the compensated RC attenuator circuit attenuates an input signal while at high frequencies, the compensated RC attenuator circuit acts as a short and the Z0attenuator circuits attenuates the input signal.

REFERENCES:
patent: 5107210 (1992-04-01), Shirao et al.
patent: 5172051 (1992-12-01), Zamborelli
patent: 5256974 (1993-10-01), Padden
patent: 5512838 (1996-04-01), Roach
patent: 6373348 (2002-04-01), Hagerup
patent: 6822463 (2004-11-01), Jacobs

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