Title :
Mini-TWT for array-fed antenna for 21-GHz-band broadcasting satellite
Author :
Nakagawa, Hitoshi ; Kamei, Masashi ; Nomoto, Toshihiro ; Munehiro, Takatsugu ; Kanamoto, Takashi
Author_Institution :
NHK Sci. & Tech. Res. Labs., Tokyo, Japan
Abstract :
A prototype mini-TWT for an active primary array-feeder of a reflector antenna for 21-GHz-band broadcasting satellites was manufactured. The cross-sectional dimensions were 15.3 mm×20.0 mm, which can produce a two-dimensional array interval of 1.5 wavelengths at 22.0 GHz when the TWTs make up an amplifier array. An output power of 11.5 W was obtained with an overall efficiency of 50.6%.
Keywords :
active antenna arrays; antenna feeds; antenna travelling wave arrays; direct broadcasting by satellite; reflector antenna feeds; travelling wave tubes; 11.5 W; 21 GHz; 22 GHz; TWT; active primary array feeder; active primary array-feeder; amplifier array; array fed antenna; broadcasting satellite; reflector antenna; travelling wave tube; Antenna arrays; Attenuation; Frequency; Microwave antenna arrays; Power generation; Prototypes; Reflector antennas; Satellite antennas; Satellite broadcasting; Waveguide transitions;
Conference_Titel :
Vacuum Electronics, 2003 4th IEEE International Conference on
Print_ISBN :
0-7803-7699-4
DOI :
10.1109/IVEC.2003.1286029
