Haas, DanielDanielHaas2023-07-102023-07-102022https://publica.fraunhofer.de/handle/publica/44539510.1007/s10762-022-00875-12-s2.0-85138144977In radar systems with a common Tx/Rx antenna, duplexers are used to separate Tx/Rx signals during operation. Especially for high-power radar systems, Tx/Rx duplexers are key components, affecting the overall system performance. This letter presents a novel Tx/Rx duplexer concept, suitable for circular full-polarimetric radar operation with multi-kW transmission power and broad bandwidth. The concept allows to push the reconnaissance capability of future broadband high-power radar sensors for space observation.enFull-polarimetric radarHigh-power microwaveQuasi-optical radar frontendSpace observationjournal article