Title :
Transmission line for 258 GHz gyrotron DNP spectroscopy
Author :
Bogdashov, A.A. ; Belousov, V.I. ; Chirkov, A.V. ; Denisov, G.G. ; Kornishin, S.Y. ; Tai, E.M.
Author_Institution :
Inst. of Appl. Phys., Nizhny Novgorod, Russia
Abstract :
We report the design and test of the transmission line for DNP spectrometer with 258GHz gyrotron. The 16 meter line includes mode converter, HE11 waveguides, 5 mitre bends, variable attenuator, directional couplers, calorimeter and switch. Transmission is 70 ± 15% with 15Watt in the pure HE11 mode.
Keywords :
NMR spectroscopy; dynamic nuclear polarisation; gyrotrons; millimetre wave directional couplers; millimetre wave spectroscopy; transmission lines; waveguide attenuators; waveguides; HE11 waveguide; calorimeter; directional coupler; dynamic nuclear polarization; frequency 258 GHz; gyrotron DNP spectroscopy; mode converter; switch; transmission line; variable attenuator; Converters; Gyrotrons; Microwave filters; Microwave measurements; Mirrors; Power transmission lines; Transmission line measurements;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612331
