The present report is a revision of [1] and obsoletes it. A new report was issued because the title had to be changed. Long circular waveguide transmission lines are commonly used in nuclear fusion experiments, both for heating and diagnosing plasmas. Corrugated waveguides are a must for heating, whereas diagnostics may use either corrugated (e.g. reflectometry) or smooth waveguide (e.g. ECE), depending on bandwidth requirements. A common task for designers is computing the polarization along the waveguide and the power transmission, including ohmic and mode conversion loss. Moreover, designers need often specify alignment and positioning tolerances. The program described in this report aims at fulfilling these needs and be of use to microwave engineers facing these tasks. Since polarization calculation is independent on the rest, the program can also be used for computing on-axis polarization along quasi-optical transmission lines. It is freeware and available in Fortran 90 source form at the Institute website alonside this report. Users are kindly requested to cite this report in their papers. [1] A. Simonetto A program for performance assessment of corrugated waveguide transmission lines IFP internal report FP18/01
A program for performance assessment of circular (smooth or corrugated) waveguide transmission lines
Simonetto Alessandro
2020
Abstract
The present report is a revision of [1] and obsoletes it. A new report was issued because the title had to be changed. Long circular waveguide transmission lines are commonly used in nuclear fusion experiments, both for heating and diagnosing plasmas. Corrugated waveguides are a must for heating, whereas diagnostics may use either corrugated (e.g. reflectometry) or smooth waveguide (e.g. ECE), depending on bandwidth requirements. A common task for designers is computing the polarization along the waveguide and the power transmission, including ohmic and mode conversion loss. Moreover, designers need often specify alignment and positioning tolerances. The program described in this report aims at fulfilling these needs and be of use to microwave engineers facing these tasks. Since polarization calculation is independent on the rest, the program can also be used for computing on-axis polarization along quasi-optical transmission lines. It is freeware and available in Fortran 90 source form at the Institute website alonside this report. Users are kindly requested to cite this report in their papers. [1] A. Simonetto A program for performance assessment of corrugated waveguide transmission lines IFP internal report FP18/01I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
