Gromozdin V. Small directivity antennas of meter and decimeter wave for radiomonitoring systems

Mathematical models of radiation field have been developed for two-spiral antenna disposed of sphere-cylindrical surface and also for round, quadratic and elliptical loaded loop antenna. Their characteristics have been analyzed. The electromagnetic problems were solved by means of the vector potential. 185о expanded quasi-isotropic directional diagram for spiral antenna disposed on sphere-cylindrical surface has been received in upper space. Radiation characteristic dependence from geometric form for loaded loop antennas have been determined. Designs of two-spiral antenna disposed on sphere-cylindrical surfase and loaded loop antennas have been suggested for radio-ether common inspection and for searching of electrical interference source for radiomonitoring system.