This book provides an overview of traveling wave tubes in space
applications. A traveling wave tube (TWT) is a type of vacuum tube used
for high-power radio frequency amplification. This device uses an
electron beam and is used in communication applications. Traveling wave
tubes have many applications in space research. Traveling-wave tubes are
also useful in ground-to-space transmissions; the device still has some
use in telecommunication, including transponders for high-frequency
military bands. Also, Traveling-wave tubes can be found in
command-guidance systems for missiles and electronic countermeasures
(ECM). The traveling-wave tubes can also be used as a radar
transmitters.