Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2007-11-13
2007-11-13
Mottola, Steven J. (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S136000
Reexamination Certificate
active
10541756
ABSTRACT:
The present invention is intended to provide a Doherty amplifier that can accomplish a linear amplifying and a power combining operation closer to the ideal in a simple configuration. The configuration comprises gain compensator6that is composed of a parallel circuit made of an anti-parallel diode and a resistor that is disposed at a position ahead of peak amplifier4included in the Doherty amplifier. Setting the gain in gain compensator6allows peak amplifier4to be compensated for the operation characteristic, when peak amplifier4is operating, based on the gm characteristic of peak amplifier4.
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Mizoguchi Jun-ichi
Shiikuma Kazumi
Mottola Steven J.
NEC Corporation
Sughrue Mion Pllc.
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