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Progress In Electromagnetics Research
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A COMPACT BEAM RECONFIGURABLE ANTENNA FOR SYMMETRIC BEAM SWITCHING

By W. Kang, K. H. Ko, and K. Kim

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Abstract:
In this paper, two radiation pattern-reconfigurable antennas are designed to operate over DCS 1800 frequency bands. The geometry of the proposed antennas is symmetric with respect to the vertical center line. The electrical shapes of the antennas are composed of a monopole-loaded loop and an open wire. The open wire functions as either a director or reflector for the two antennas. Depending on the switching state, the antennas can select between two beam directions with no input impedance difference. The sizes of each antenna are then optimized to achieve beam switching capability using PIN diodes and FETs. The reflection coefficients and gain patterns for two bias conditions using both switches are measured and compared with the simulated results. The measured results show that the proposed antennas can clearly alternate their beam directions using the switching components.

Citation:
W. Kang, K. H. Ko, and K. Kim, "A Compact Beam Reconfigurable Antenna for Symmetric Beam Switching," Progress In Electromagnetics Research, Vol. 129, 1-16, 2012.
doi:10.2528/PIER12032005
http://www.jpier.org/PIER/pier.php?paper=12032005

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