@inproceedings{oai:jaxa.repo.nii.ac.jp:00008142,
 author = {七日市, 一嘉 and 篠原, 真毅 and 三谷, 友彦 and 松本, 紘 and 木村, 友久 and 鬼頭, 克巳 and Nanokaichi, Kazuyoshi and Shinohara, Naoki and Mitani, Tomohiko and Matsumoto, Hiroshi and Kimura, Tomohisa and Kito, Katsumi},
 book = {第23回宇宙エネルギーシンポジウム　平成15年度, The 23rd ISAS Space Energy Symposium March 9, 2004},
 month = {Jun},
 note = {For realization of Space Solar Power System (SSPS), it's essential to develop Microwave Power Transmission (MPT) System with high DC-RF conversion efficiency and light weight. MPT system for SSPS requires very accurate beam control (less than 0.001 degree) with huge phased arrays whose diameter is over 1.0 km. It also requires total efficiency of more than 80 percent (excluding conversion efficiency of solar cells) to work as a space system. To satisfy these requirements, a Phase Controlled Magnetron (PCM) is suitable for microwave transmitter. The PCM takes advantage of high power, high DC-RF conversion efficiency, low cost, and light weight of a magnetron. Typical output power from the PCM is 300 W, while output power from one antenna element is less than 1 W. Therefore insertion of power divider and phase shifters after PCM output is required to satisfy SSPS parameters and it leads to disadvantage. Because the power dividers and the phase shifters are inserted after high power microwave output, insertion loss in these elements is very critical. The loss after the PCMs must be reduced to realize the PCM-based MPT system. Slot-coupled Active Integrated Antenna (AIA) system is proposed as one of the solution of this Final Stage problem. This system uses waveguide slot antenna as a power divider and AIA as low-loss phase shifter and antenna layer. By using an electromagnetic coupling between an AIA and waveguide slot antenna, thin and light antenna structure can be realized. This system also has low insertion loss and is suitable for high power from the PCM because of the use of the waveguide as an input port. One of the important factors of the slot-coupled AIA is coupling factor of the electromagnetic coupling between microstrip lines and waveguide slots. The aim of this study is to improve the coupling factor by reconsideration of the electromagnetic coupling structure. Coupling factor of nearly 90 percent was achieved by changing waveguide dimensions., 資料番号: AA0047275026},
 pages = {124--128},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)},
 title = {高効率マイクロ波送電のための導波管スロット-AIA結合度向上に関する研究},
 year = {2004}
}