Title :
The Design of Directional Couplers Using Exponential Lines in Inhomogeneous Media
Author :
Sobhy, M.I. ; Hosny, E.A.
Abstract :
Coupled exponential transmission lines in inhomogeneous media are analyzed and an accurate solution is obtained. The solution is used to design microwave directional couplers. The designed couplers have much improved coupling characteristics compared with couplers using uniform lines. Practical measurements show very good agreement with theoretical results.
Keywords :
Capacitance; Differential equations; Directional couplers; Distributed parameter circuits; Impedance; Microstrip; Nonhomogeneous media; Transmission line measurements; Transmission line theory; Voltage;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131019
