Title :
Determination of waveguide mode content using irradiance moments
Author :
Jawla, Sudheer K. ; Shapiro, Michael A. ; Idei, Hiroshi ; Temkin, Richard J.
Author_Institution :
Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
We present a novel method for calculating the linearly polarized mode contents in an overmoded corrugated waveguide. The proposed method is based on calculating the low order irradiance moments of the measured radiated intensity profiles at several distances from the waveguide aperture. The method is validated by the data measured from a 63.5 mm diameter corrugated waveguide at 170 GHz and a 19 mm diameter corrugated waveguide at 250 GHz.
Keywords :
gyrotrons; waveguide polarisers; corrugated waveguide; frequency 170 GHz; frequency 250 GHz; irradiance moments; linearly polarized mode contents; overmoded corrugated waveguide; size 19 mm; waveguide aperture; waveguide mode content; Accuracy; Apertures; Couplings; Gyrotrons; Method of moments; Power transmission lines; Transmission line measurements;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956423
