Electromagnetic scattering by a conducting cylinder coated with a uniaxialchiral layer of varying thickness: generalized mode-matching method

Based on the concept of characteristic waves and the method of angular spec tral expansion, cylindrical vector wave functions are developed to represen t the electromagnetic waves in a uniaxial chiral medium. To illustrate how to use the present cylindrical vector wave functions in a practical way, a generalized mode-matching method is proposed to study the electromagnetic s cattering of a conducting circular cylinder coated with a uniaxial chiral l ayer of varying thickness. The excellent convergence property of the bistat ic echo width is numerically verified, which establishes the reliability an d applicability of the present cylindrical vector wave functions and genera lized mode-matching method for a two-dimensional problem with a curved surf ace coating of a uniaxial chiral medium. (C) 2000 Elsevier Science B.V. All rights reserved.