Title :
FDTD analysis of a circular coaxial feeder for reflector antenna
Author :
Capece, P. ; Leoncini, M.
Author_Institution :
Alenia Spazio S.p.A., Rome, Italy
Abstract :
In the frame of the ARTEMIS Program, sponsored by ESA, Alenia have developed a coaxial horn able to generate in the S-band a dual circular polarized signal. The circular polarization was excited within the horn by using four probes suitably fed by a square coaxial network. The horn behavior was experimentally optimized in terms of matching and radiation characteristics. In parallel, a model based on the FDTD method was developed to analyze the electromagnetic (EM) response of the horn. FDTD simulations were carried out in a 3D cylindrical frame best suited for this coaxial geometry. The model implementation for a simplified version of the horn having only two probes is described.
Keywords :
antenna radiation patterns; coaxial waveguides; electromagnetic wave polarisation; finite difference time-domain analysis; horn antennas; reflector antenna feeds; 2.0 to 2.3 GHz; 3D cylindrical frame; Alenia; FDTD analysis; S-band; UHF antenna; circular coaxial feeder; circular polarization; coaxial horn; dual circular polarized signal; electromagnetic response; matching; radiation characteristics; reflector antenna; square coaxial network; Antenna feeds; Coaxial components; Electromagnetic analysis; Electromagnetic modeling; Electromagnetic wave polarization; Finite difference methods; Probes; Reflector antennas; Signal generators; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631473
