The COMETS mobile torus reflector antenna

Advanced mobile satellite communication experiments on the Communications and Broadcasting Engineering Test Satellite (COMETS) will be carried out mainly by the Communications Research Laboratory (CRL). A torus reflector antenna is being developed for a mobile millimeter-wave antenna of the COMETS. The CRL developed a prototype of the torus reflector antenna, and it seems that the prototype worked normally as expected from the calculated design. This was shown by the results of measuring its performance. The objectives of the experiments are to develop basic technology and to assess the feasibility of future mobile and personal satellite communications in the Ka-band (31/21 GHz) and millimeter-wave (47/44 GHz)