EDGE SHAPE EFFECTS AND QUASI-CLOSED FORM EXPRESSIONS FOR THE CONDUCTOR LOSS OF MICROSTRIP LINES

Much work has been done in the past to determine the conductor loss of microwave and millimeter-wave integrated circuits (MIMICs). However, much of this work is limited by constraints on the conductor thickness , skin depth, or the shape of the edge. In this paper, a technique wil l be presented that results virtually in a quasi-closed form expressio n for this loss in many cases. This expression will allow the calculat ion of the attenuation constant for a planar circuit for an arbitraril y shaped edge and any conductor thickness. The question of how differe nt edge shapes affect the conductor loss will be addressed.