Title :
Broadband Class-E Power Amplifier for HF and VHF
Author :
Raab, Frederick H.
Author_Institution :
Green Mountain Radio Res. Co., Colchester, VT
Abstract :
The power amplifier described here uses a 50-V gemini MOSFET and operates in class E to produce up to 200 W from 1.8 to 128 MHz. The circuit incorporates a broadband input so that frequency changes require only retuning or switching of the output filter. The efficiency varies from 90 percent at 1.8 MHz to 70 percent at 128 MHz. The amplitude-modulation linearity is excellent, making it well suited for use in a Kahn-technique (EER) transmitter
Keywords :
HF amplifiers; MOSFET; VHF amplifiers; power amplifiers; wideband amplifiers; 1.8 to 128 MHz; 50 V; HF; Kahn-technique transmitter; VHF; broadband power amplifier; class-E; gemini MOSFET; Broadband amplifiers; Filters; Frequency; Hafnium; Linearity; MOSFET circuits; Power MOSFET; Power amplifiers; Switching circuits; VHF circuits; HF; MOSFET; Power amplifier; VHF; class E;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249839
