TY - CPAPER AU - Denis A. Letavin TI - A MINIATURIZATION STUDY OF A 3 DB DIRECTIONAL COUPLER AT DIFFERENT OPERATING FREQUENCIES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future PY - 2020 SP - 9 EP - 16 DO - 10.5593/sgem2020/6.1/s24.002 PB - STEF92 Technology ER -