Title :
Analysis of coupled cylindrical slot and strip lines based on the Riemann-Hilbert problem method
Author :
Svezhentsev, A.Y.
Author_Institution :
Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine
Abstract :
The problem of two open coupled metal-dielectric lines is topical for directional couplers, filters, antennas, etc. in so far as accurate models of these structures are indispensable to computer aided design. The presented accurate approach is capable of analyzing the waves in structures composed of two circular cylindrical slot/strip lines (CSlLs/CStLs) which belong to the family of the so-called nonplanar lines. Each CSlL/CStL consists of a circular dielectric rod coated with an infinitely thin metal slotted cylinder so that the longitudinal slot runs in the propagation direction. When the slot opening θ>π, the cylindrical slot line (CSlL) is considered as a cylindrical strip line (CStL). The discrete spectrum modes of some variants of coupled CSlLs/CStLs are discussed
Keywords :
circular waveguides; coupled transmission lines; modal analysis; slot lines; spectral analysis; strip lines; waveguide theory; Riemann-Hilbert problem method; antennas; circular dielectric rod; computer aided design; cylindrical slot lines; cylindrical strip lines; directional couplers; discrete spectrum modes; filters; infinitely thin metal slotted cylinder; longitudinal slot; nonplanar lines; open coupled metal-dielectric lines; propagation direction; Directional couplers; Directive antennas; Electromagnetic scattering; Electromagnetic waveguides; Filters; Mutual coupling; Planar waveguides; Propagation constant; Strips; Waveguide transitions;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 1998. MMET 98. 1998 International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-4360-3
DOI :
10.1109/MMET.1998.709893
