Analysis of Mutual Coupling in Slotted-Waveguide Arrays

A moment method analysis of slot radiators in waveguide is described which includes both the internal and external mutual coupling associated with neighbouring radiators. A particular feature of the analysis is that the computation of external mutual coupling is now incorporated directly into the moment method whereas previously mutual coupling calculations have traditionally involved the employment of dipole equivalences. Furthermore the relative importance of internal and external mutual coupling effects for some typical slot geometries is discussed.