Open offset canceling method and an impedance measuring...

Details Open offset canceling method and an impedance measuring... Open offset canceling method and an impedance measuring...

2007-12-11

2007-12-11

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

C324S725000

Reexamination Certificate

active

11471789

ABSTRACT:
A method for finding the impedance of a device under test using an impedance measuring apparatus having a modem-type auto-balancing bridge, two or more measurement signals, each of which has a different phase with respect to the reference signals supplied to the modem inside said auto-balancing bridge, are applied to a device under test; the impedance of this device under test is measured when each of the measurement signals is applied to the device under test; and the impedance of this device under test is found using the above-mentioned phase and the impedance measurement value of each of these measurements.

REFERENCES:
patent: 6054867 (2000-04-01), Wakamatsu
patent: 6956380 (2005-10-01), Sakiyama
patent: 2003-279607 (2003-10-01), None

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