Efficient power supply for rapidly changing power requirements

Details Efficient power supply for rapidly changing power requirements Efficient power supply for rapidly changing power requirements

2004-10-22

2010-06-15

Chen, Tse (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C330S199000

Reexamination Certificate

active

07739522

ABSTRACT:
A highly efficient power supply, a method for supplying power, and a method for arranging a power supply, for a UHF or microwave radio frequency amplifier intended for operation with a signal that has a power level which varies at a high frequency rate. The power supply has an output for connecting to a power supply input of the radio frequency power amplifier and includes a high rate controllable voltage supply employing electronic linear devices connected to the output, an element for quantifying power dissipated by the electronic linear devices and a low rate controllable current supply connected to the output. Preferably, the current supply is a substantially constant current supply at the frequency of the radio frequency signal. Preferably, the controllable voltage supply has a control input and is arranged to be controlled for outputting a voltage that is a function of the high frequency power variation.

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Dale R et al, High-Efficiency High-Level Modulator for Use in Dynamic Envelope Tracking CDMA RF Power Amplifiers, 2001 IEEE MTT-S Digest p. 1509-1512.
Gary Han ington et al, IEEE Transactions on Microwave Theory and Techniques, vol. 47, No. 8, Aug. 1999 High-Efficiency Power Amplifier Using Dynamic Power-Supply Voltage for CDMA Applications, see p. 1471-1476.

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