@article{10902/36328,
year = {2008},
month = {7},
url = {https://hdl.handle.net/10902/36328},
abstract = {A compact solution for a dual band OMT polarizer that avoids the use of additional iris loaded corrugated sections is discussed here. The proposed device is based on a conventional septum type polarizer-OMT in waveguide technology covering two separate bands, were an extension of its normal (rather narrow) frequency band of operation has been achieved to meet restringing specifications for the 20/30 GHz 5% fractional bandwidth satellite link communication bands. The septum type OMT-polarizer consists of three physical ports: two of them in rectangular waveguide and another common port in circular or square waveguide. A given signal coming from a rectangular port is split into two 3dB orthogonal signals at the common port with a time delay of 90º between them. This produces a circular polarized signal: a RHCP associated to one of the rectangular ports and a LHCP associated to the second rectangular port. This compact design exhibits good return losses (>25dB) at the rectangular and circular ports as well as high isolation (>40dB) between modes. Furthermore, axial ratio is kept as low as 0.5dB in both communication bands.},
organization = {The authors would like to express their gratitude to the Spanish Agency AECI though its program “Becas para Extranjeros No Iberoamericanos para Estudios de Postgrados,Doctorado y Postdoctorado en Universidades y centros superiors en España ”. Also, the authors would like to think to the Spanish Ministerio de Educación y Ciencia for help the PCI-A-3566-05 and PCI-A-4238 2006-projects.},
publisher = {International Academy of Microwave and Optical Technology (IAMOT)},
publisher = {International Journal of Microwave and Optical Technology, 2008, 3(3), 339-344},
title = {20/30GHz compact dual band circular polarizer for satellite feed systems},
author = {Tribak, Abdelwahed and Fernández, N. and Mediavilla Sánchez, Ángel and Marante Rizo, Francisco Reinerio and Boussouis, Mohamed},
}