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A Switchable Multiple Beam Antenna for GSM-UMTS Base Stations in Planar Technology

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4 Author(s)
Barba, M. ; Electromagnetism & Circuit Theor. Dept., Univ. Politecnica de Madrid ; Page, J.E. ; Encinar, J.A. ; Montejo-Garai, J.R.

A broadband antenna for GSM1800-UMTS base stations with multiple switchable beams in azimuth is presented in this paper. The multiple beams are obtained by means of a broadband Butler matrix. The radiating element is broadband and consists of two stacked patches. The elevation pattern is shaped with null filling and upper lobe reduction that has been achieved by means of a broadband corporate feed network implemented in microstrip technology. Photographs and measurements of the manufactured prototypes are presented confirming that the design of all of the elements is correct

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:54 ,  Issue: 11 )

Date of Publication:

Nov. 2006

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