DocumentCode
408193
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
fYear
2003
fDate
28-30 May 2003
Firstpage
44
Lastpage
45
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;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electronics, 2003 4th IEEE International Conference on
Print_ISBN
0-7803-7699-4
Type
conf
DOI
10.1109/IVEC.2003.1286029
Filename
1286029
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