The article presents analysis of the impact of conformal antennas radius of curvature on their basic parameters and characteristics of radiation. In order to verify the numerical results there were built models of practically analyzed conformal antennas, their measurements were taken in anechoic chamber and compared to those of planar antennas. Numerical analysis has been carried out (for basic shapes: cylinder, sphere, toroid) using CST Studio Suite software. Analysed antennas worked within frequency range between 2200 – 2300MHz and 5031 – 5090.6 MHz. Both ranges are used in aviation, the first one in telemetry systems, another one in Microwave Landing System (MLS).