@inproceedings{sgem2020s24002,
  title = {A MINIATURIZATION STUDY OF A 3 DB DIRECTIONAL COUPLER AT DIFFERENT OPERATING FREQUENCIES},
  author = {Denis A. Letavin},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future},
  year = {2020},
  pages = {9-16},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2020/6.1/s24.002}
}