Miniaturization of omnidirectional circularly polarized antennas

The paper reports miniaturization of recently introduced planar omnidirectional circularly polarized antennas. The technique relies on folding the antennas patch underneath itself, decreasing overall footprint. The connectivity between layers is provided by vias, enabling cost efficient PCB manufacturing techniques. The average axial ratio in the xz-plane is less than 3 dB in the band of 2.392 to 2.407 GHz. This is better than previously reported antennas of this type.

[1]  K. Sarabandi,et al.  A Topology-Based Miniaturization of Circularly Polarized Patch Antennas , 2013, IEEE Transactions on Antennas and Propagation.

[2]  H. Oraizi,et al.  Circularly Polarized Multiband Microstrip Antenna Using the Square and Giuseppe Peano Fractals , 2012, IEEE Transactions on Antennas and Propagation.

[3]  Sailing He,et al.  Compact Omnidirectional Antenna of Circular Polarization , 2012, IEEE Antennas and Wireless Propagation Letters.

[4]  M. Ammann,et al.  Dual-Band Omnidirectional Circularly Polarized Antenna , 2013, IEEE Transactions on Antennas and Propagation.

[5]  Marta Martinez-Vazquez.  Considerations for the design of antennas embedded in mobile communications devices , 2010, 2010 Loughborough Antennas & Propagation Conference.

[6]  Sungkyun Lim,et al.  A Miniaturized, Dual-Band, Circularly Polarized Microstrip Antenna for Installation Into Satellite Mobile Phones , 2009, IEEE Antennas and Wireless Propagation Letters.