In this paper a frequency reconfigurable pixel antenna is implemented using PIN diodes. The overall dimension of the patch antenna is 26.9x24.5 mm, and it is fabricated on an FR4 substrate. The design is investigated by the simulation and measurement of S11 parameters and radiation patterns. With different combinations of PIN diode biasing conditions, the antenna can be set to 2.5 GHz, 3.9 GHz, and 10 GHz. The antenna shows a consistent radiation pattern at all the reconfigured frequency bands. In the accessible frequency range, an average gain of 6 dB and low level of cross polarization are also recorded. A good agreement between the measured and simulated results validates the presented concept of frequency reconfiguration.
2. Besoli, A. G. and F. De Flaviis, "A multifunctional reconfigurable pixelled antenna using MEMS technology on printed circuit board," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 12, 4413-4424.
3. Zammit, J. A. and A. Muscat, "Rapid analysis of a pixel patch antenna using the planar circuit technique," Loughborough Antennas & Propagation Conference, Loughborough, UK, Nov. 14-15, 2011.
4. Yuan, X., Z. Li, D. Rodrigo, H. S. Mopidevi, and O. Kaynar, "A parasitic layer-based reconfigurable antenna design by multi-objective optimization," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 6, 2690-2701, Jun. 2012.
5. Li, Y.-L., W. Shao, J.-T. Wang, and H. Chen, "An improved NSGA-II and its application for An improved NSGA-II and its application for," Radio Engineering, Vol. 23, No. 2, 733-738, Jun. 2014.
6. George, R., C. R. S. Kumar, and S. A. Gangal, "Design of a frequency reconfigurable pixel patch antenna for cognitive radio applications," International Conference on Communication and Signal Processig, 1684-16, 2016.
7. Pozar, D. M. and D. H. Schaubert, Microstrip Antenna Design, IEEE Press, Piscataway, NJ, 1995.
8. Balanis, C. A., Antenna Theory: Analysis and Design, John Wiley & Sons, Canada, 2005.
9. Skyworks Solutions Inc., , www.Skyworksinc.com.