Polarization diversity antenna array

Communications: radio wave antennas – Antennas – Plural antennas spaced a fractional or full wave length apart

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343795, 343853, H01Q 2128

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active

06067055&

ABSTRACT:
A cylindrical, omnidirectional antenna array includes a plurality of vertically spaced circular rows and a plurality of angularly spaced vertical columns, with an antenna element located at each row-column intersection. The antenna elements included in one 180.degree. sector of the cylindrical array are vertically polarized, while the antenna elements included in the other, diametrically opposed 180.degree. sector are horizontally polarized to provide polarization diversity. Optionally, the antenna may be adapted as a sector antenna array by reducing the number of columns and the angles of the diametrically opposed sectors to less than 180.degree..

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Boray et al., Conjugate Gradient Techniques for Adaptive Filtering, IEEE Transactions on Circuits and Systems-I Fundamental Theory and Applications, vol. 39, No. 1, Jan. 1992.
Vaidyanathan et al., Dual Polarized Smart Antenna Beams, IEEE 46th Vehicular Technology Conference, Apr. 28-May 1 1996.

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