@inproceedings{sgem2019s24011,
  title = {COMPACT COUPLER WITH TWO WORKING BANDWIDTH},
  author = {Denis A. Letavin},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Nano, Bio, Green and Space: Technologies for Sustainable Future},
  year = {2019},
  pages = {85-92},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/6.1/s24.011}
}