Title :
Slot-coupled directional couplers between double-sided cylindrical microstrip lines
Author :
Jui-Han Lu ; Kin-Lu Wong
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
Slot-coupled directional couplers between double-sided substrate microstrip lines have found applications in the design of many important circuits. To analyze the characteristics of such slot-coupled directional couplers on a curved surface, we present the study of slot-coupled double-sided cylindrical microstrip lines. The inside and outside cylindrical microstrip lines are coupled through a rectangular coupling slot in the common cylindrical ground plane. To solve the problem a full-wave approach incorporating a Galerkin´s moment-method calculation is applied. The S parameters of such a directional coupler are calculated and compared with experiment.
Keywords :
Galerkin method; S-parameters; circular waveguides; directional couplers; method of moments; microstrip discontinuities; waveguide theory; Galerkin´s moment-method calculation; S parameters; curved surface; double-sided cylindrical microstrip lines; full-wave approach; rectangular coupling slot; slot-coupled directional couplers; Admittance; Coupling circuits; Directional couplers; Feeds; Green´s function methods; Magnetic field measurement; Microstrip; Millimeter wave circuits; Scattering parameters; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.550053
