A novel flexible frequency and pattern reconfigurable antenna for wireless system is proposed. The antenna is composed of two completely symmetrical radiating elements, a feedline and ground. By controlling the on and off of 8 PIN diodes loaded on the symmetric hexagonal split ring and monopole branches to select the radiation element, the antenna achieves frequency reconfiguration in 1.9G band and 2.4G band, and is capable of steering the beam in two directions in each band. Meanwhile, the antenna works at four states with omnidirectional radiation patterns. Finally, the bending characteristics of the antenna at different bending degrees are analyzed. Measured results are in good agreement with simulations, which denotes that it is suitable for wireless systems.
2. Selvam, Y. P., et al., "Novel frequency- and pattern-reconfigurable rhombic patch antenna with switchable polarization," IEEE Antennas & Wireless Propagation Letters, Vol. 16, No. 99, 1639-1642, 2017.
doi:10.1109/LAWP.2017.2660069
3. Balanis, C., S. Saeed, and C. Birtcher, "Inkjet-printed flexible reconfigurable antenna for conform WLAN/WiMAX wireless devices," IEEE Antennas & Wireless Propagation Letters, Vol. 15, 1979-1982, 2016.
4. Jang, T., et al., "Semitransparent and flexible mechanically reconfigurable electrically small antennas based on tortuous metallic micromesh," IEEE Transactions on Antennas & Propagation, Vol. 65, No. 1, 150-158, 2017.
doi:10.1109/TAP.2016.2623479
5. Kgwadi, M. and T. D. Drysdale, "Diode-switched thermal-transfer printed antenna on flexible substrate," Electronics Letters, Vol. 52, No. 4, 258-260, 2016.
doi:10.1049/el.2015.3060
6. Simorangkir, R. B. V. B., et al., "A method to realize robust flexible electronically tunable antennas using polymer-embedded conductive fabric," IEEE Transactions on Antennas & Propagation, Vol. 66, No. 1, 50-58, 2017.
doi:10.1109/TAP.2017.2772036
Submit
