Innovation and Technology at Your Service



on 6 Jun 2018 in Projects |

“Compact On-board L-band Diplexers for high-power applications” – 

ESA project on the development of compact diplexers for mobile satellite communications



The objective is to evaluate a new class of compact diplexers capable of 100 W RF power operation based on dielectric technology, used either as a main resonator concept or as a filling feature for the filter critical gaps. Preliminary work at filter level has shown that a footprint reduction up to 50% can be achieved compared with the standard coaxial technology, while maintaining similar in-band and out-of-band performance. This results needs to be extended at diplexer level, with a detailed trade-off between in-line and cross-coupled filters for complex transfer functions. Other major challenges exist in terms of increased temperature range and higher RF power handling (average, multipaction and PIM) which shall be addressed simultaneously.


TRL Level

Form 3/4 to 5/6






RFmicrotech s.r.l. – PRIME CONTRACTOR



Thales Alenia Space Italy