Title :
Study of Schottky-contact coupled microstrip directional coupler
Author :
El-Kordy, M. ; El-Fadl, A. Abou
Author_Institution :
Dept. of Electr. Commun., Menoufia Univ., Egypt
Abstract :
An accurate study of Schottky-contact coupled microstrip lines is presented. Green´s function has been used to determine the depletion layer capacitance of the even and odd modes. This technique has been applied to calculate the propagation characteristics and the coupling coefficient of the coupled lines. The dependence of the slow wave factor and the attenuation on the resistivity of the semiconductor substrate has been studied. It is found that the resistivity of 1.0 Ohm.cm is convenient with minimum attenuation. It is also noticed that, in the even mode more field lines passed through the conductive layer than those in the odd mode. With this technique, the calculated predictions of the coupled microstrip lines are in good agreement with the published data
Keywords :
Green´s function methods; Schottky-barrier diodes; directional couplers; microstrip components; microstrip lines; transmission line theory; waveguide theory; Green´s function; Schottky-contact coupled microstrip directional coupler; coupled lines; coupling coefficient; depletion layer capacitance; even mode; fringing field capacitance; odd mode; predictions; propagation characteristics; semiconductor substrate; slow wave factor; Attenuation; Capacitance; Conductivity; Coupling circuits; Dielectric substrates; Directional couplers; Electrodes; Green´s function methods; Integral equations; Microstrip;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE
Conference_Location :
Hamamatsu
Print_ISBN :
0-7803-1880-3
DOI :
10.1109/IMTC.1994.352069
