Zw. Du et Cl. Ruan, FURTHER STUDY ON THE CHARACTERISTIC IMPEDANCE OF A NEW TRANSMISSION-LINE OF ROUND CONDUCTOR AND PARALLEL PLANE WITH A SLIT, International journal of infrared and millimeter waves, 16(1), 1995, pp. 201-207
A conformal transformation for the analysis of a transmission line con
sisting of a cylindrical conductor placed opposite a slit in an infini
te flat plate is developed. The approximate and exact expressions in c
losed-form of the characteristic impedance for the proposed line based
on assuming only a quasi-TEM mode propagating in the line are as exac
t as the conventional one cited.