Simple Switched-Beam Array Antenna System for Mobile Satellite Communications
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概要
- 論文の詳細を見る
This paper presents a simple antenna system for land vehicle communication aimed at Engineering Test Satellite-VIII (ETS-VIII) applications. The developed antenna system which designed for mounting in a vehicle is compact, light weight and offers simple satellite-tracking operation. This system uses a microstrip patch array antenna, which includes onboard-power divider and switching circuit for antenna feeding control, due to its low profile. A Global Positioning System (GPS) receiver is constructed to provide accurate information on the vehicles position and bearing during traveling. The personal computer (PC) interfaces as the control unit and data acquisition, which were specifically designed for this application, allow the switching circuit control as well as the retrieving of the received power levels. In this research, the antenna system was firstly examined in an anechoic chamber for S parameter, axial ratio, and radiation characteristics. Satisfactory characteristics were obtained. As for beam-tracking of antenna, it was examined in the anechoic chamber with the gain above 5dBic and the axial ratio below 3dB. Moreover, good received power levels for tracking the ETS-VIII satellite in outdoor measurement, were confirmed.
著者
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PURNOMO M.
Graduate School of Science and Technology, Chiba University
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SAITO Kazuyuki
Research Center for Frontier Medical Engineering, Chiba University
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TAKAHASHI Masaharu
Research Center for Frontier Medical Engineering, Chiba University
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ITO Koichi
Graduate School of Engineering, Chiba University
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