@conference {14_EuCAP_Leal-SevillanoRuiz-CruzMontejo-GaraiEtAl_NovelDual-BandSingle,
	title = {Novel Dual-Band Single Circular Polarization Antenna Feeding Network for Satellite Communications},
	booktitle = {Proc. 2014 European Conference on Antennas and Propagation (EuCap)},
	year = {2014},
	month = {Apr.},
	pages = {1-5},
	abstract = {In this paper a novel dual-band single circular polarization antenna feeding network for satellite communications is presented. The novel antenna feed chain1 is composed of two elements or subsystems, namely a diplexer and a bi-phase polarizer. In comparison with the classic topology based on an orthomode transducer and a dual-band polarizer, the proposed feed chain presents several advantages, such as compactness, modular design of the different components, broadband operation and versatility in the subsystems interconnection. The design procedure of this new antenna feed configuration is explained. Different examples of antenna feeding networks at 20/30 GHz are presented. It is pointed out the excellent results obtained in terms of isolation and axial ratio.},
	keywords = {antenna, Circular polarization, diplexer, dual-band, K/Ka band, multibeam, orthomode transducer, polarizer, satellite communications, waveguide},
	author = {C A Leal-Sevillano and J A Ruiz-Cruz and Montejo-Garai, J R and Rebollar, J M}
}
@article {09_IJRFMiCAE_Montejo-GaraiRuiz-CruzRebollar_SynthesisSinglyEllipticLadderFilters,
	title = {Synthesis of Symmetric and Asymmetric Singly-Terminated Elliptic Ladder Filters for Multiplexing Applications},
	journal = {International Journal of RF and Microwave Computer-Aided Engineering},
	volume = {19},
	number = {4},
	year = {2009},
	month = {July},
	pages = {443-452},
	abstract = {An extension of the Cauer ladder development for synthesizing singly terminated filters with symmetric and asymmetric responses is presented. Basically, a driving-point immittance including reactive constant elements is carried out in such a way that provides the transmission zeros. The reactive constant elements are introduced into the synthesis for two reasons. The first is to consider the possibility of the asymmetric position of transmission zeros in the real frequency axis. The second one is to obtain canonical forms, i.e. networks with the minimum number of elements in the case of symmetrical responses. To validate the proposed method, a filter with asymmetrical response has been synthesized, comparing different topologies for its use in multiplexers. This fact is illustrated with a Ku-band elliptic response diplexer designed in H-plane rectangular waveguide. {\^A}{\textcopyright} 2009 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2009.},
	keywords = {diplexer, filter synthesis, pole removal, singly terminated, zero-shifting},
	issn = {1096-4290},
	doi = {10.1002/mmce.20366},
	url = {http://www3.interscience.wiley.com/cgi-bin/fulltext/122322557/PDFSTART},
	author = {Montejo-Garai, J R and J A Ruiz-Cruz and Rebollar, J M}
}
