Keywords: microwaves, environmental effects Abstract: An outline of a project METRAS/MINIX which is short for Microwave Energy Transmission in Space/Microwave Ionosphere Nonlinear Interaction experiment is described. The METRAS/MINIX is a prestage experiment for the future SPS. Energy generated with solar cells is transmitted from a ATTACHMENT : transmitting antenna on the Space Station to a rectenna on a subsatellite associated with the Space Station. In order to simulate a possible interaction of the SPS microwave beam with the D and E layers in the ionosphere, an artificial plasma with characteristics similar to those in the natural D and E layers is produced in a large balloon opened in front of the sub-satellite. Objectives of this experiment is not only to investigate the possible interaction of the SPS microwave energy-beam with the ionosphere but also to develop fundamental technologies of the microwave energy trnsmission in space. The MINIX rocket experiment and a space chamber pre-launch experiment are also described. Authors, con't.: Kaya, N.; Matsumoto, H.; <Dept. of Instrumentation, Kobe University, Rokko, Kobe 657> Nagatomo, N.; Obayashi, T.; (Institute of Space & Astronautical Science, Komaba, Tokyo 153> Miyatake, S.; <Dept. of Radiocommunications, University of Electro-Communication, Chofu, Tokyo 182> Title: Microwave power transmitting and receiving antennas Source: Proceedings of the Second ISAS Space Energy Symposium, Institute of Space & Astronautical Science, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan, Dec. 13-14, 1982. (Paper No. IU-8) Authors: Saito, Haruo; Katagi , Takashi; Abe, Hisashi; (Mitsubishi Electric Corporat i on > Keywords: microwaves, ground energy conversion and distribution Abstract: A SPS system is very attractive to secure future energy resources. This paper describes new basic technology for microwave power transmitting and receiving antennas for SPS system use. The transmitting antenna is a retro- directive array antenna based on a new concept using two (2) frequencies as a ATTACHMENT : pilot frequency. The receiving antenna is an ordinary half-wave dipole array antenna which has high receiving efficiency for the incident signal transmitted from the various angle of low earth orbit satellite by adequate impedance matching between load and active impedance. Title: A system of large space antenna measurement - near field antenna measurement by using a manipulator- Source: Proceedings of the Second ISAS Space Energy Symposium, Institute of Space & Astronautical Science, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan, Dec. 13-14, 1982.. (Paper No. IU-9) Authors: Iida, Takashi; Teshirogi, Tasuku; (Radio Research Laboratories, Ministry of Posts and Te1ecommunications> Keywords: environmental effects, microwaves Abstract: it is considered that the antenna used in the space will have a large aperture in the future. Especially, the antenna for space energy, whose diameter will be several tens of meters or more, will be constructed in space. Hereupon, such an antenna may cause much interference to other experiments and/ ATTACHMENT : or communication links, if the antenna is used actually without identifying its ch aracteristis in the space with the specifications. If an antenna can be deployed in the space, it could be considered that the antenna characteristics obtained by the measurement on the ground would be reproduced in the space to the extent of the accuracy sufficient for actual use. On the other hand, the large antenna should have their characteristics measured in the space in which they are constructed. In this paper, various methods of measuring such a large antenna are studied briefly in the first place, and then the method of the near field antenna measurement (NFAM) [1J using a manipulator is proposed. Title: Power from radiant-energy sources: an overview Source: Proceedings of the AFOSR Special Conference on Prime-Power for High Energy Space Systems, Norfolk, Virginia, USA, Feb. 22-25, 1982. (Paper No. UI -1) Authors: English, Robert E.; Brandhorst, Henry W., Jr.; (NASA - Lewis Research Center, Cleveland, Ohio>
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