Active re-configurable multibeam reflector antenna for satellite application

Abstract

Recent results on active multifeed Ka-band developments for satellite communication are presented. Basically, the active multifeed system is an array-fed, single-offset reflector antenna. The antenna array is fed by an active microstrip beamforming network based on a low temperature cofired ceramics substrate with monolithic microwave integrated circuit based phase and amplitude actuators. In this paper, the benefits of such a technology are shown as well as first project results.

Rx/Tx integration concepts for ground segment SatCom antenna arrays

“…Furthermore, many localized systems like KA-SAT (Eutelsat) or Thor-7 (Telenor) exist, which focus on special applications. All these satellites are operated in the geostationary orbit (GEO) and rely on narrow spotbeams following the four-color-scheme [1] to maximize the throughput. To be compliant, ground segment antennas featuring two polarizations and two (sub-)frequency bands are required.…”