Amplifiers – With semiconductor amplifying device – Including gain control means
Patent
1999-05-25
2000-08-15
Shingleton, Michael B
Amplifiers
With semiconductor amplifying device
Including gain control means
330285, 330296, H03G 312, H03G 330
Patent
active
061042463
ABSTRACT:
A RF integrated circuit including an amplifier having an input node and an output node; a switchable feedback path coupled between the output node and input node; and a switchable bias injector coupled to the input node. When the switchable feedback path is off and the switchable bias injector is on, the amplifier is in a high gain state. When the switchable feedback path is on and the switchable bias injector is off, the amplifier is in a low gain state. The circuit may be used in up converters and down converters for CDMA systems.
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King Nathaniel
LaFerrara Holly A.
International Business Machines - Corporation
Shingleton Michael B
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