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Wideband Reconfigurable Rolled Planar Monopole Antenna

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3 Author(s)
Giuseppe Ruvio ; Dublin Inst. of Technol., Dublin ; Max J. Ammann ; Zhi Ning Chen

A novel technique to reconfigure the frequency range of a planar monopole antenna is presented. By adjusting the degree of spiral tightness, a shift of the well-matched operating frequency range is achieved. The proposed antenna is capable of covering the frequencies in the range from 2.9 to 15 GHz, depending on the degree of spiral tightness. The antenna yields a high-efficiency across the full operating bandwidth. Radiation patterns show good omni-directional features in all primary cuts and remain relatively stable with the change of antenna configuration, so that it is a remarkable candidate for indoor or mobile applications where a large frequency range and omnidirectional radiation are required.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:55 ,  Issue: 6 )