Graduation date: 1993The propagation characteristics of a new coupled fin line structure, with\ud asymetrical, rectangular, top and bottom housings, is evaluated by using the modal\ud analysis technique. The boundary Green's function of the structure, relating the surface\ud currents to the electric fields is derived by using this technique. The propagation\ud characteristics, i.e. propagation constant and impedances, of the structure are determined\ud by implementing Galerkin's procedure and the results are presented for a wide range of\ud possible structure dimensions. A CAD compatible, quasistatic analysis based on\ud conformal mapping of the rectangular housing structure and known coplanar waveguide\ud results is also presented. The results of the quasistatic analysis are shown to be in good\ud agreement with the fullwave simulation at low frequencies
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