In this technical note the design of the RFX-mod2 high field side horn reflector type antenna (also named hoghorn) is thoroughly described. The whole design was developed by means of the COMSOL Radio Frequency (RF) module. Four different versions were envisaged by introducing some modifications of the aperture shape to study their effect on the antenna performance, in particular in terms of beam radiation pattern and phase distribution on selected planes. FEM frequency domain analyses have been carried out to characterize the antenna response and the results are compared by visual inspection of electric field norm maps, far field polar plots, evaluation of antenna directivity and phase value both along particular paths and on selected planes, in particular on the antenna aperture. A version has been integrated into the full CAD representation of the device to accomplish a final check of size compatibility and to choose the most suited interface with the feeding waveguide. A prototype has been made by additive manufacturing process and characterization tests are planned in the next future. Some of these results were presented at the online 4th European Conference on Plasma Diagnostics (ECPD2021) 7-11 June, 2021 and they have been published in [1].
Design of horn reflector type antenna for the RFX-mod2 high-field side
Marchiori G;De Masi G;
2022
Abstract
In this technical note the design of the RFX-mod2 high field side horn reflector type antenna (also named hoghorn) is thoroughly described. The whole design was developed by means of the COMSOL Radio Frequency (RF) module. Four different versions were envisaged by introducing some modifications of the aperture shape to study their effect on the antenna performance, in particular in terms of beam radiation pattern and phase distribution on selected planes. FEM frequency domain analyses have been carried out to characterize the antenna response and the results are compared by visual inspection of electric field norm maps, far field polar plots, evaluation of antenna directivity and phase value both along particular paths and on selected planes, in particular on the antenna aperture. A version has been integrated into the full CAD representation of the device to accomplish a final check of size compatibility and to choose the most suited interface with the feeding waveguide. A prototype has been made by additive manufacturing process and characterization tests are planned in the next future. Some of these results were presented at the online 4th European Conference on Plasma Diagnostics (ECPD2021) 7-11 June, 2021 and they have been published in [1].I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
