@article {9_DualPolarizerPIER,
	title = {Dual Linear/Circular Polarized Plannar Antenna with Low Profile Double-Layer Polarizer of 45{\textpm} Tilted Metallic Strips for WIMAX Applications},
	journal = {PIER - Progress in Electromagnetics Research},
	volume = {98},
	year = {2009},
	month = {Oct.},
	pages = {221-231},
	abstract = {A low profile double-layer polarizer structure is presented for planar patch antennas to obtain circular polarization in 3.5 GHz WiMAX band (3.4-3.6 GHz?5.7\% bandwidth). Each polarizer layer is composed of 45{\textordmasculine} tilted metallic strips on a printed circuit. A bandwidth widening is obtained due to a significant reduction of the distance between polarizer and patches. The associated effects from the interaction of the two structures have been studied. A 2x2 array prototype has been implemented and measured, with a 8\% average bandwidth in reflection and dual linear/circular polarization.},
	issn = {1559-8985},
	doi = {10.2528/PIER09092406},
	url = {http://www.jpier.org/PIER/pier98/13.09092406.pdf},
	author = {J L Masa-Campos and Gonz{\'a}lez-Fern{\'a}ndez, F}
}
@conference {08_URSIESP_Gonzalez-Fernandez_Disenodeantenas,
	title = {Dise{\~n}o de antenas impresas de banda ancha con polarizador para sistemas WiMAX a 3.5GHz y comunicaciones por sat{\'e}lite en banda {\^a}{\texteuro}\~{}X{\^a}{\texteuro}{\texttrademark}},
	booktitle = {Proc. 2008 Simposium Nacional URSI (in Spanish)},
	year = {2008},
	month = {Sept.},
	pages = {1-4},
	abstract = {Mobile communications terminals are strongly affected by multi-path reflection waves, so phase error can be quite important in this case. Circular polarization (CP) is used to avoid this problem, mainly caused by reflection on buildings and ground surface. The proposed antenna with parasitic strip elements as polarizer has the advantage to be robust, low cost and easy to fabricate with conventional materials and printed circuit technology. Two prototypes are exposed, WiMAX and X band, whose measures results verify the CP and show that good return loss and axial ratio characteristics have been obtained.},
	url = {http://w3.iec.csic.es/ursi/paginas/index_congresosreali.htm},
	author = {Gonz{\'a}lez-Fern{\'a}ndez, F and J L Masa-Campos and Castro, M T and J A Ruiz-Cruz}
}
