Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Reexamination Certificate
2005-04-05
2005-04-05
Jones, Stephen E. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including distributed parameter-type coupling
C333S001100, C333S024200
Reexamination Certificate
active
06876258
ABSTRACT:
A high-frequency amplifier in a power amplifier module includes, on a substrate on which the amplifier is formed, first- and second-stage amplifiers for receiving and amplifying an input signal, a harmonic processing circuit for matching of harmonics included in an output signal from the second-stage amplifier, and a low-pass filter receiving an output from the harmonic processing circuit to selectively pass a signal to be supplied to a non-reciprocal circuit element using a predetermined frequency as a cutoff frequency.
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Krauss et al., Solid State Radio Engineering, 1980, John Wiley &Sons, pp. 418-419.*
U.S. Appl. No. 09/717,215, filed Nov. 22, 2000.
Inoue Akira
Ohta Akira
Jones Stephen E.
McDermott Will & Emery LLP
Mitsubishi Denki & Kabushiki Kaisha
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