Amplifiers – Signal feedback – In cascade amplifiers
Reexamination Certificate
2011-08-23
2011-08-23
Choe, Henry K (Department: 2817)
Amplifiers
Signal feedback
In cascade amplifiers
C330S260000
Reexamination Certificate
active
08004355
ABSTRACT:
A low dissipation, low distortion amplifier includes a driver amplifier stage and a main output stage, with a plurality of impedance networks providing, among other things, feedback paths from outputs of the driver and main output stages to the input of the driver stage. The impedance networks also provide coupling paths from the outputs of the driver and main output stages to the load. The impedance networks can all be formed of resistors, capacitors, or network combinations thereof. An additional feedback path can be added from the load to the driver stage to flatten out the frequency response at low frequencies. The driver and main output stages may be operated in Class AB and B modes respectively, and/or in Class G or H modes. An intermediate amplifier driver stage may be added between the driver and main output stages.
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Fincham Lawrence R.
Jones Owen
Choe Henry K
Irell & Manella LLP
THX Ltd.
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