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Single-Sideband Transmission by Envelope Elimination and Restoration

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1 Author(s)
Kahn, L.R. ; Crosby Laboratories, Inc., Mineola, N.Y.

A new type of single-sideband transmitter is described which does not require the use of linear radio-frequency amplifiers. Amplification is accomplished by a process in which the phase-modulation component of the single-sideband wave is amplified by means of Class-C amplifiers, and the amplitude envelope is restored at the final amplifier. Experimental results show performance equal to or better than conventional linear radio-frequency amplifier practices. The over-all efficiency is approximately the same as that of a double-sideband amplitude-modulated transmitter. This system is especially suitable for high-power operation.

Published in:

Proceedings of the IRE  (Volume:40 ,  Issue: 7 )
RFIC Virtual Journal, IEEE