Title :
Transverse operator method for the analysis of the directly connected image guide couplers
Author :
Elfadl, A. ; Elkordy, M. ; Attia, A.
Author_Institution :
Elec. Comm. Dept., Menoufia Univ., Menouf, Egypt
fDate :
June 28 1993-July 2 1993
Abstract :
The dispersion and the coupling characteristics of the directly connected image guide 3-dB directional coupler have been studied. The propagation constants of the even and the odd modes of the coupling zones are determined by means of the transverse operator method (TOM). The results obtained indicate that the bandwidth of the coupler extends 28% under tolerance limits of /spl plusmn/0.25 dB from 3 dB with proper dimensions used in the effective dielectric constant approach (EDC). The results obtained by TOM are compared with those obtained by EDC. The relative error between the two methods is within the range of 0.08% to 0.2%. TOM is more general because it can be applied on more complicated structures. The CPU time is relatively less than of the other numerical methods. The directly connected image guide couplers have very flat coupling characteristics, and are more useful for millimeter-wave integrated circuits than conventional types.<>
Keywords :
computational complexity; dispersion (wave); mathematical operators; millimetre wave directional couplers; millimetre wave integrated circuits; 3-dB directional coupler; CPU time; bandwidth; coupling characteristics; directly connected image guide couplers; dispersion; effective dielectric constant; millimeter-wave integrated circuits; propagation constants; transverse operator method; Bandwidth; Central Processing Unit; Dielectric constant; Dielectric losses; Directional couplers; Frequency; Image analysis; Moment methods; Permittivity; Propagation constant;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385313
