Title :
Whisker embedding impedance for millimeter wave diode circuits
Author :
Xu, J. ; Raissanen, A.V.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Recent developments in the theoretical modeling of a whisker mounted in a rectangular waveguide are reported. The moment method in conjunction with the dyadic Green´s function is used to analyze this structure. The effects of whiskers of various shapes on the embedding impedance are investigated. Results for whiskers located in the cross-sectional plane of a rectangular waveguide are presented. It is shown that the whisker shape can greatly affect the embedding impedance presented to the active device, and that a constant inductance or capacitance assumption for a whisker mount in a rectangular waveguide may contribute large discrepancies to circuit performance compared with theoretical designs because of the strong dependence of the lumped circuit parameters on operating frequency.<>
Keywords :
Green´s function methods; rectangular waveguides; semiconductor diodes; solid-state microwave circuits; constant capacitance; constant inductance; cross-sectional plane; dyadic Green´s function; embedding impedance; lumped circuit parameters; millimeter wave diode circuits; moment method; rectangular waveguide; whiskers; Diodes; Green´s function methods; Impedance; Millimeter wave circuits; Millimeter wave technology; Moment methods; Planar waveguides; Rectangular waveguides; Shape; Waveguide theory;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276810
