Conformal cylindrical microstrip dipole radiator input impedance calculation

Problem statement. Conformal antennas are antennas that completely or partially follow the shape of the object on which they are installed. The main applications of such antennas are in aviation, rocketry and vehicles. Despite a significant number of publications on the topic of conformal antennas both in our country and abroad, issues relating to the formation of the radiation characteristics of conformal microstrip antennas, as well as the influence of the size and shape of the radiator and substrate on these characteristics, remain poorly understood. Goal. Development of a methodology for calculating the input resistance of a conformal cylindrical microstrip dipole radiator. Results. The problem of current density distribution on the surface of a conformal cylindrical microstrip dipole radiator is reduced to a one-dimensional integral equation (IE). In the core of the resulting IS, the Cauchy-type singularity was explicitly identified and it was shown that this IS is singular. A method for solving it is proposed. A method for calculating the input resistance of a conformal cylindrical microstrip dipole radiator, based on solving the resulting singular integral equation, is described. The dependences of the active and reactive components of the input resistance on the length of the radiator normalized to the wavelength are given. Practical significance. The proposed method for calculating the input resistance of a conformal cylindrical microstrip dipole radiator allows you to effectively calculate the input resistance and analyze the influence of the geometric dimensions of the radiator, as well as the dimensions and electrodynamic properties of the substrate. This technique can be adapted for radiators placed on substrates made of various materials, including chiral metamaterials.