An article entitled "High-Efficiency Single-Sideband HF/VHF Transmitter Based Upon Envelope Elimination And Restoration " by F.H. Raab and D.J. Rupp, Green Mountain Radio Research Company, USA from IEEE CP392, UK pp. 21-25, Jul. 4-7, 1994. |
An article entitled "Class-S High-Efficiency Amplitude Modulator" by Dr. Frederick H. Raab and D.J. Rupp, Green Mountain Radio Research from GMRR TP93-1:RF Design, vol. 17, No. 5, pp. 70-74, May 1994. |
An article entitled "Single-Sideband Transmission By Envelope Elimination and Restoration" by Leonard R. Kahn from Proceedings Of The IRE, Jul. 1952. |