Garcia D.,RYMSA |
Cabrera V.,RYMSA |
Proceedings of the 2013 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, IEEE APWC 2013 | Year: 2013
The development of a compact circular polarization Orthomode Trasducer (OMT) working in two frequency bands with dual circular polarization (RHCP & LHCP) is presented. The device covers the complete communication spectrum allocated at C-band. At the same time, the device presents high power handling capability and very low mass and envelope size. The OMT plus a feed horn are used to illuminate a Reflector antenna, the surface of which is shaped to provide domestic or regional coverage from geostationary orbit. The full band operation increases the earth-satellite communication capability. The paper will show the OMT selected architecture, the RF performances at unit level and at component level. RF power aspects like multipaction and PIM are addressed. This development was performed under European Space Agency ESA ARTES-4 program. © 2013 IEEE.
Garcia R.,RYMSA |
Mayol F.,RYMSA |
Montero J.M.,RYMSA |
IEEE Antennas and Propagation Magazine | Year: 2011
This paper presents the development of a circular-polarization feed comprising an OMT (orthomode transducer) and a corrugated horn. The OMT works in two frequency bands with polarization redundancy providing right- and left-hand circular polarizations (RHCP and LHCP). The operation is done at the typical communication transmitting and receiving C-band frequencies. The feed horn is used to illuminate a reflector antenna, the surface of which is shaped to provide domestic, regional, or global coverage from a geostationary satellite. The challenge in the design consisted in obtaining a mechanically compact feed assembly with low mass, while being compliant with the specified electrical performance requirements, since this device was developed for a satellite application.