Erkelenz, KevinKevinErkelenzSielck, NoahNoahSielckKölpin, AlexanderAlexanderKölpinJacob, ArneArneJacob2024-08-192024-08-192024IEEE Transactions on Microwave Theory and Techniques 72 (10): 6130-6139 (2024)https://hdl.handle.net/11420/48802In this work, a passive dual-polarized shared antenna aperture and active beamformer front-ends are integrated into a phased array module. The system operates in the K-/ Ka-band and is intended for satellite communications. It consists of a hybrid assembly of aluminum waveguide components and printed circuit boards that are electrically connected by anisotropic conductive adhesive, containing a heterodyne transceiver with L -band interfaces. For proof of concept, a demonstrator with 64 transmit (Tx) and 32 receive (Rx) elements is fabricated and characterized. It provides full-duplex Tx/Rx operation with bandwidths of 1 GHz centered around 29.5 (Tx) and 19.5 GHz (Rx), beam scanning over wide angular ranges up to 60 ∘ in both H -and E -planes, an equivalent isotropic radiated power of up to 20.4 dBW at 1-dB power compression and an Rx gain to noise temperature ratio of up to − 10.2 dB/K at room temperature. The measured performances are comparable to those of phased array systems with separate apertures and thus validate the integration approach.en0018-948020241061306139IEEEDual-frequencydual-polarizedfront-endfull duplexintegrationK-/ Ka-bandmodularphased arrayplanarreceive (Rx)satellite communication (SatCom)shared aperturetransceivertransmit (Tx)Technology::600: TechnologyJournal Article10.1109/TMTT.2024.3394163Journal Article