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

2008-07-22

2008-07-22

Nguyen, Ha (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

Reexamination Certificate

active

11693628

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: 6841987 (2005-01-01), Clegg et al.
patent: 7256575 (2007-08-01), Pollock et al.

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