W-Band Orthomode Transducer for Dense Focal-Plane Clusters
G. Virone ; O. A. Peverini ; M. Lumia ; et al. ; - ASI Sponsor
Feb - 2015
DOI: 10.1109/LMWC.2014.2373638

journal : IEEE Microwave and Wireless Components Letters

Volume : 25 ; Issue : 2
type: Article Journal

A W-band orthomode transducer has been designed for polarimeter clusters in dense focal planes. Its compact geometry, with aligned output ports, allows for a closely-spaced triangular-lattice arrangement. At these high frequencies, the platelet manufacturing strategy has been applied and verified experimentally on seven prototypes, showing reflection coefficients lower than polarimeter clusters-20 dB, insertion loss of about 0.25 dB and cross-coupling and isolation levels of -42 dB and 45 dB, respectively, in a 30% bandwidth.

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Notes : ... This work was supported by the Agenzia Spaziale Italiana (ASI) in the framework of thecontract “Sviluppi tecnologici nel millimetrico per missioni di polarizzazione,” N.I/038/09/0...