Current switched circuit for switch mode power amplifiers

Details Current switched circuit for switch mode power amplifiers Current switched circuit for switch mode power amplifiers

2006-12-28

2009-11-17

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S302000, C330S20700P

Reexamination Certificate

active

07619469

ABSTRACT:
Disclosed is a switch mode power amplifier that provides high power (e.g., 100 W) at a high frequency (e.g., microwave frequency range). The switch mode power amplifier includes a load resistor, an inductor-capacitor (LC) circuit connected in parallel with the load resistor, a first switching mechanism connected to a first endpoint of the load resistor, and a second switching mechanism connected to a second endpoint of the load resistor. In one embodiment, the LC circuit is a first LC circuit connected in parallel with the load resistor and a second LC circuit is connected in series with the first LC circuit (and therefore connected in parallel with the load resistor). The circuit is transformer free.

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“Pulsewave rf: Class M Power Digital RF Amplifier”, downloaded from http://www.pulsewaverf.com/technology—class—m—power.php on Dec. 26, 2006.
Tsai-Pi Hung, et al., “High Efficiency Current-Mode Class-D Amplifier with Integrated Resonator”, Microwave Symposium Digest, vol. 3, Jun. 6, 2004.
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