Title :
A Switchable Multiple Beam Antenna for GSM-UMTS Base Stations in Planar Technology
Author :
Barba, Mariano ; Page, Juan E. ; Encinar, José A. ; Montejo-Garai, José R.
Author_Institution :
Electromagnetism & Circuit Theor. Dept., Univ. Politecnica de Madrid
Abstract :
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
Keywords :
3G mobile communication; antenna feeds; antenna radiation patterns; broadband antennas; matrix algebra; microstrip antenna arrays; multibeam antennas; planar antenna arrays; Butler matrix; GSM1800-UMTS base station; broadband antenna; corporate feed network; elevation pattern; manufactured prototype measurement; microstrip technology; multiple switchable beam; photograph; planar technology; radiating element; stacked patch; Azimuth; Base stations; Broadband antennas; Butler matrix; Directional antennas; Feeds; Filling; Manufacturing; Microstrip; Prototypes; Broadband antennas; multibeam antennas; planar arrays;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.883991
