Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – With auxiliary means to condition stimulus/response signals
Reexamination Certificate
2007-06-26
2007-06-26
Hirshfeld, Andrew H. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
With auxiliary means to condition stimulus/response signals
C327S103000
Reexamination Certificate
active
11441689
ABSTRACT:
An impedance conversion circuit including: a first voltage-to-current converter and a second voltage-to-current converter supplied with differential input signal voltages; an inverting amplifier; and a third voltage-to-current converter for feedback; wherein a first resistance and a second resistance are connected in series with each other between an input terminal and an output terminal of the inverting amplifier, an output terminal of the first voltage-to-current converter is connected to the input terminal of the inverting amplifier, an output terminal of the second voltage-to-current converter is connected to a connection node of the first resistance and the second resistance, the output terminal of the inverting amplifier is connected to an input terminal of the third voltage-to-current converter, an output terminal of the third voltage-to-current converter is connected to an input terminal of the first voltage-to-current converter, and an impedance is connected between the connection node and a ground.
REFERENCES:
patent: 4591739 (1986-05-01), Nagano
patent: 5126586 (1992-06-01), Gilbert
patent: 5249224 (1993-09-01), Chambers
patent: 6107842 (2000-08-01), Hirabayashi et al.
patent: 6346804 (2002-02-01), Ueno et al.
patent: 6577139 (2003-06-01), Cooper
patent: 6828832 (2004-12-01), Gabillard
patent: 6906586 (2005-06-01), Sakurai
patent: 2003/0122551 (2003-07-01), Male
patent: 2005/0030046 (2005-02-01), Yakabe et al.
patent: 2005/0099211 (2005-05-01), Dahlin
patent: 10-005716 (1999-07-01), None
patent: 11-205087 (1999-07-01), None
Hirabayashi Atsushi
Komori Kenji
Depke Robert J.
Hirshfeld Andrew H.
Nguyen Hoai-An D.
Rockey, Depke, Lyons & Kitzinger LLC.
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