http://www.cnr.it/ontology/cnr/individuo/prodotto/ID20569
Five-Level Waveguide Correlation Unit for Astrophysical Polarimetric Measurements (Articolo in rivista)
- Type
- Label
- Five-Level Waveguide Correlation Unit for Astrophysical Polarimetric Measurements (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1109/TMTT.2006.890066 (literal)
- Alternative label
G. Virone, R. Tascone, M. Baralis, A. Olivieri, O. A. Peverini, R. Orta (2007)
Five-Level Waveguide Correlation Unit for Astrophysical Polarimetric Measurements
in IEEE transactions on microwave theory and techniques
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- G. Virone, R. Tascone, M. Baralis, A. Olivieri, O. A. Peverini, R. Orta (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4084855 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Titolo
- Five-Level Waveguide Correlation Unit for Astrophysical Polarimetric Measurements (literal)
- Abstract
- Recent astrophysical measurements require an accurate
evaluation of the correlation product between very weakly
correlated signals. Waveguide correlation units represent a very
appealing solution for these applications because of their stability
and low-loss features. A new waveguide correlation unit architecture
is discussed in this paper. It extends over five levels in the
E-plane and integrates hybrid couplers, filters, a phase shifter,
matched loads and various matched transitions. All the aspects
concerning the analysis, design, and manufacturing procedures are
described, focusing on the reduction of the spurious correlation
terms (systematic errors). An aluminum Ka-band prototype has
been designed and experimentally tested. The device exhibits spurious
correlation parameters of the order of 30 dB, in a 10% frequency
band, in good agreement with the predicted data. Thanks
to this feature, the presented architecture is suitable for high-performance
correlation polarimeters, where very high sensitivity to
the relevant signal, as well as very high rejection of both the unpolarized
component of the radiation under test and the instrument
noise, are required. (literal)
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