Radiation in a lossless magneto-ionic medium at frequencies high relative to the electron gyrofrequency

Abstract

Equation s for the radia t ion field of an arbi trary di stribu tion of so urce curren ts embedd ed in a lossless magneto-ionic m edium and radiating at a frequ ency that is high relative to t he electron gyrofrequ eney of the medium are der ived using t he QL approximation. The field is given directly in terms of the components of radiation vector determined by an integrat ion over the source currents. The application of t he equation s to arrays of s imilar sources is discussed.

Electromagnetic waves along an infinitely long and thin conducting wire in a magneto-ionic medium

“…However, the c haracteristics of antennas placed in such a medium [Kogelnik, 1960;Marini , 1963;Wu, 1963] have not b ee n thoroughly s tudied. For example, the wavele ngth of the curre nt di stribution along an antenna wire has not bee n obtained, while the radiation impedances of linear ante nnas have already been co mputed with ass umed c urre nt distributions [Ament e t aI.…”