Amplifiers – Modulator-demodulator-type amplifier
Patent
1986-06-20
1988-05-10
Laroche, Eugene R.
Amplifiers
Modulator-demodulator-type amplifier
330251, 330207A, H03F 338, H03F 3217
Patent
active
047438584
ABSTRACT:
An r.f. power amplifier, typically a high efficiency, class E amplifier in which a reactive load circuit (18) is connected to a semiconductor switching device (10), the load circuit being designed to have the required input load angle and loaded Q so that the voltage across the device (10) goes to zero with zero slope before it switches on and passes current, is provided with a step recovery diode (32) connected to the device (10) to limit the voltage swing across the device (10) with no significant loss of efficiency. This allows the voltage-handling capability required of the device to be reduced or the amplifier output power to be increased by increasing the supply voltage.
REFERENCES:
patent: 3919656 (1975-11-01), Sokal et al.
Sokal, Nathan O., "Class E Can Boost Efficiency", Elec. Design, vol. 20, 9-27-77, pp. 96-102.
Sokal, Nathan O. and Alan D., "Class E-A New Class of Hi-Efficiency Tuned Switching Power Amps", IEEE J., S.S. Circuits, vol. SC-10, No, 3, June 1974, pp. 168-176.
Briody Thomas A.
LaRoche Eugene R.
Mottola Steven J.
Rich Marianne R.
Streeter William J.
LandOfFree
R. F. power amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with R. F. power amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and R. F. power amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1323383