Radiated electric field from a solar cell module set on the ground plane has been studied experimentally and theoretically in order to clarify the antenna effect of the solar cell module. In experimental examination, the radiated electric field characteristic of the thin-film Si solar cell module has measured using the semi-anechoic chamber including the ground plane. In theoretical examination, the solar cell has assumed the conducting wire, which has limited electric conductivity. And the radiated electric field of a solar cell was analyzed by using the method of moment. In both examinations, the maximum value of electric field strength for every frequency was measured or calculated when the solar cell module is rotated by 360 degree. Consequently the calculation value agreed with the measurement one within 10dB in the whole frequency region of 30MHz to 300MHz. As the results, we confirm the availability and the validity of the calculation method using the resistance of the solar cell and the measurement and the calculation methods in the semi-anechoic chamber with the ground plane.%大地面上に存在する太陽電池モジュールからの放射電界に対するアンテナ効果を定量的に把握するために、実験的理論的検討を行った。実験的検討では、金属床面を含む電波半無響室を使い薄膜シリコン太陽電池モジュールの放射電界特性を測定した。理論的検討では太陽電池を有限の導電率を有するワイヤと見立て、モーメント法を用いて放射電界の解析を行った。また、測定値の最大値を追従する方法を太陽電池モジュールの放射電界測定に用いることで、30MHz～300MHzの全ての周波数で測定値と計算値が10dB以内で一致した。このことから、交流抵抗値からワイヤの導電率を算出する解析方法の妥当性及び有効性を確認でき、金属床面を有する測定場における測定・解析方法を明らかにすることが出来た。
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