Normalised impedance of circular, trapezoidal and rectangular conductors in semiclosed slots: a unified transmission line approach

A unified transmission line approach has been utilised to develop the impedance per unit length of three shapes of conductor: circular, trapezoidal and rectangular, placed in semiclosed slots. In all cases, an equivalent nonuniform transmission line has been derived to model the problem. The results obtained with this simple generalised approach agree closely with those obtained experimentally and theoretically by other authors using a variety of calculation methods.