Title :
A novel dual-band and dual circular-polarization feed for paraboloidal reflector antenna
Author :
Wen-Feng Peng ; Wen-Juan Ye ; Shan-Hong He
Author_Institution :
Sch. of Electron. Eng. & Opt., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A new feed technology with dual-band and dual circular polarization capability in a shared aperture featuring constant phase center, high efficiency and so on is presented. The radiations of the proposed feed are nested with circular wave-guide and metallic annular ring, which operates in X-band and LS-band, respectively. The upper band feed system consists of a orthomode transducer (OMT) and a circular wave-guide phase-shifter with metal posts besides the radiation circular wave-guide, and the LS-band feed system is formed by the annular ring radiation patch fed by arc patches combining with the -3dB microstrip hybrid and the “anti-phase & dual-feed” technique. Design consideration, simulation and measurements of the constructed feed system are presented and discussed.
Keywords :
circular waveguides; microwave phase shifters; reflector antenna feeds; LS-band; X-band; annular ring radiation patch; band feed system; circular waveguide phase-shifter; dual circular-polarization feed; dual-band polarization feed; metallic annular ring; orthomode transducer; paraboloidal reflector antenna; Antenna feeds; Antenna radiation patterns; Dual band; Polarization; Reflector antennas; Dual Circular-Polarization; Dual band; Shared Aperture Feed;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230351
