Antenna system with omnidirectional radiation pattern for systems with phase algorithms of direction findingAlexander Zhuravlev, Alexander Golovkov, Polina Terenteva, Victor Malyshev, Michail Shmyrin and Nikolay StenyukovITM Web Conf., 30 (2019) 05021DOI: https://doi.org/10.1051/itmconf/20193005021