Telecommunications – Transmitter and receiver at separate stations
Patent
1993-11-10
1997-06-17
Urban, Edward F.
Telecommunications
Transmitter and receiver at separate stations
323315, 327541, H04B 700, G05F 316
Patent
active
056406819
ABSTRACT:
A cascode current mirror circuit includes a cascode connected input stage (401) that operates to conduct an input current (400) in response to an input voltage of an input signal coupled to an effective transconductance of the cascode connected input stage (401). An input mirroring transistor (404) operates to control a mirror reference current (406) in response to the input voltage of the input signal. A diode connected transistor (409) coupled to a second control node of the cascode connected input stage (410) generates a control bias proportional to the mirror reference current (406) and to the input signal. A cascode connected output stage (411) has a first control node (413) coupled to the input signal and a second control node (414) coupled to the diode connected transistor (409) and the second control node (410) of the cascode connected input stage (401) for establishing an output current (415) that is substantially equivalent to the input current (400).
REFERENCES:
patent: 5142696 (1992-08-01), Kosiec et al.
patent: 5311115 (1994-05-01), Archer
patent: 5311146 (1994-05-01), Brannon et al.
patent: 5359296 (1994-10-01), Brooks et al.
patent: 5373228 (1994-12-01), Holle
patent: 5373249 (1994-12-01), Barrett, Jr. et al.
Barrett, Jr. Raymond Louis
Herold Barry Wayne
Pajunen Grazyna A.
Motorola Inc.
Rasor Gregg
Urban Edward F.
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