D. A. Antropov - Ph.D. (Eng.), Deputy Chief of the Naval Scientific Committee
O. Yu. Perfilov - Dr.Sc. (Eng.), Professor, Deputy General Director in Science, JSC - All-Russia Research Institute "ETALON"
V. E. Fidelman - Honored Inventor of RF

Radio is the main communication equipment for the difficult natural Arctic, Far-Eastern conditions. Therefore the EMC task is very important. The article purpose was the study of the new constructions of the VHF and UHF protected lamellar annular slot antennas, placed at the "air-earth" material boundary, for the technical characteristics improvement. The purpose is reached by the second resonant cavity addition. Technical the solutions in the new antenna construction proposed will make it possible to increase 2-3 times operational frequencies band, to improve VSWR by 10-15% and to increase the antenna gain by 10-25% (0,5-0,85). The proposed new antennas are considerably extended the possibilities of the practical application on the stationary and mobile objects.