Abstract
We solve a new canonical problem: that of the diffraction of an E-polarized or an H-polarized spherical wave (emanating from a point source) by an imperfectly conducting strip (on which impedance boundary conditions are imposed). This consideration is important because the point source is regarded as fundamental radiating device. The two independent problems are solved by a method due to Jones based on the Wiener-Hopf technique, and expressions for the far field are calculated.