Combined-Phase-Shift Waveguide Polarizer
| Autor: | Renato Orta, Giuseppe Addamo, Giuseppe Virone, Riccardo Tascone, Oscar Antonio Peverini |
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| Rok vydání: | 2008 |
| Předmět: |
Parabolic antenna
Physics dual polarization business.industry Physics::Optics Polarizer Condensed Matter Physics microwaves Differential phase law.invention Optics Dual-polarization interferometry electromagnetics law Reflection (physics) waveguide polarizers antenna feed systems Antenna feed Electrical and Electronic Engineering Propagation constant business Microwave |
| Zdroj: | IEEE microwave and wireless components letters 18 (2008): 509–511. doi:10.1109/LMWC.2008.2001005 info:cnr-pdr/source/autori:G. Virone, R. Tascone, O. A. Peverini, G. Addamo, R. Orta/titolo:Combined-Phase-Shift Waveguide Polarizer/doi:10.1109%2FLMWC.2008.2001005/rivista:IEEE microwave and wireless components letters/anno:2008/pagina_da:509/pagina_a:511/intervallo_pagine:509–511/volume:18 |
| ISSN: | 1531-1309 |
| DOI: | 10.1109/lmwc.2008.2001005 |
| Popis: | A waveguide polarizer exploiting two different phase shift phenomena is presented in this letter. Iris-type discontinuities are in fact introduced in a waveguide structure having different propagation constants for the two principal polarizations. In this way, the required 90 Deg differential phase shift is obtained combining the iris phase shift with the waveguide one. Several operative conditions arise from the combination of the two contributions. This approach has been used to design a broadband waveguide polarizer for the -band antenna feed system of the Sardinia Radio Telescope with 40 dB reflection coefficients and a 35 dB cross polarization level in a 30% bandwidth. |
| Databáze: | OpenAIRE |
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