http://www.cnr.it/ontology/cnr/individuo/prodotto/ID20568
Optimum-Iris-Set Concept for Waveguide Polarizers (Articolo in rivista)
- Type
- Label
- Optimum-Iris-Set Concept for Waveguide Polarizers (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1109/LMWC.2006.890474 (literal)
- Alternative label
G. Virone, R. Tascone, O. A. Peverini, R. Orta (2007)
Optimum-Iris-Set Concept for Waveguide Polarizers
in IEEE microwave and wireless components letters
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- G. Virone, R. Tascone, 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=4118226 (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
- Optimum-Iris-Set Concept for Waveguide Polarizers (literal)
- Abstract
- Novel profiled irises for the design of waveguide polarizers
are presented. The two degrees of freedom of their piecewise-
circular profile allow one to better control the frequency behavior
of the differential phase shift. Thanks to this feature, an
optimum iris set can be found by selecting the discontinuities for
which the differential-phase-shift deviation from the average value
is minimum in the operative bandwidth. This optimum iris set can
be identified for several values of the ratio r/lambda0, where r is the
waveguide radius and lambda0 is the free-space wavelength at the central
frequency. Hence, even if both the waveguide size and central
frequency are assigned in the specifications, polarizers with a
very low deviation from 90 Deg of the total differential phase shift can
be designed. In this way, the number of waveguide transitions in
the antenna feed system can be reduced and the effect of spurious
higher-order-mode coupling can be minimized. A Ka-band polarizer
in circular waveguide with piecewise-circular-profile irises is
described, showing a return loss better than 55 dB and a phase
error of about 0.9 Deg in a 10% bandwidth. (literal)
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