@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}
}
