A Frequency Reconfigurable Half Annular Ring Slot Antenna Design

The design of a switchable microstrip-fed half annular ring slot antenna for multi-frequency operation is proposed. By incorporating three switches along the meandered tuning stub that is loaded on top of the half circular patch located within the circular slot, easy reconfigurability of four frequency bands over a frequency ratio of approximately 1.7:1 can be achieved. Furthermore, the proposed antenna structure does not require additional DC biasing circuit. Simulation and measurement results have demonstrated that the four frequency bands can exhibit good impedance matching, stable radiation patterns and desirable gains.

[1]  K. Sarabandi,et al.  Design of reconfigurable slot antennas , 2005, IEEE Transactions on Antennas and Propagation.

[2]  Jeen-Sheen Row,et al.  Reconfigurable microstrip antenna with polarisation diversity and frequency agility , 2007 .

[3]  S. Mahmoud,et al.  A Widely Tunable Compact Patch Antenna , 2008, IEEE Antennas and Wireless Propagation Letters.

[4]  Kai Chang,et al.  Multiband frequency reconfigurable antenna by changing the microstrip connecting element position , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[5]  D.E. Anagnostou,et al.  A Coplanar Reconfigurable Folded Slot Antenna Without Bias Network for WLAN Applications , 2009, IEEE Antennas and Wireless Propagation Letters.

[6]  P S Hall,et al.  Switched-Band Vivaldi Antenna , 2011, IEEE Transactions on Antennas and Propagation.

[7]  M. F. Ismail,et al.  A Compact Frequency-Reconfigurable Narrowband Microstrip Slot Antenna , 2012, IEEE Antennas and Wireless Propagation Letters.

[8]  Tsair-Rong Chen,et al.  Circular Polarization and Polarization Reconfigurable Designs for Annular Slot Antennas , 2012, IEEE Transactions on Antennas and Propagation.

[9]  Y. Leviatan,et al.  Reconfigurable Slot Antenna for Switchable Multiband Operation in a Wide Frequency Range , 2013, IEEE Antennas and Wireless Propagation Letters.