Self-Polarizing Fabry–Perot Antennas Based on Polarization Twisting Element

A new configuration of a self-polarizing Fabry-Perot (FP) antenna is presented to generate circular polarization with high gain levels using a simple linearly polarized feed. It consists of an FP resonator combined with a polarization-twisting ground plane. An analytical model is proposed to facilitate the antenna design, and the corresponding results are shown to be in very close agreement with full-wave simulations. The experimental prototype built in -band exhibits a combined bandwidth (3 dB axial ratio, 3 dB gain drop, and 10 dB impedance matching) of 3% with a maximum realized gain of 18.0 dB. The antenna is completely shielded with an aperture size of and a height of only . Such antennas are attractive candidates for high-power space applications at low frequencies ( -to -bands) where standard horns are very bulky.

[1]  Ronan Sauleau,et al.  Radiation performance of purely metallic waveguide‐fed compact Fabry–Perot antennas for space applications , 2007 .

[2]  G. Gerini,et al.  Leaky wave enhanced feed arrays for the improvement of the edge of coverage gain in multibeam reflector antennas , 2008, IEEE Transactions on Antennas and Propagation.

[3]  David R. Jackson,et al.  A leaky-wave analysis of the high-gain printed antenna configuration , 1988 .

[4]  R Chantalat,et al.  Performance Enhancement of Self-Polarizing Metallic EBG Antennas , 2010, IEEE Antennas and Wireless Propagation Letters.

[5]  P. Hannan,et al.  Microwave antennas derived from the cassegrain telescope , 1961 .

[6]  G. V. Trentini.  Partially reflecting sheet arrays , 1956 .

[7]  Ronan Sauleau,et al.  Validity and Accuracy of Equivalent Circuit Models of Passive Inductive Meshes. Definition of a Novel Model for 2D Grids , 2002 .

[8]  Bernard Jecko,et al.  Directive photonic-bandgap antennas , 1999 .

[9]  S. Tretyakov,et al.  Simple and Accurate Analytical Model of Planar Grids and High-Impedance Surfaces Comprising Metal Strips or Patches , 2007, IEEE Transactions on Antennas and Propagation.

[10]  Ben A. Munk,et al.  Frequency Selective Surfaces: Theory and Design , 2000 .

[11]  R. Sauleau,et al.  Small-Size Shielded Metallic Stacked Fabry–Perot Cavity Antennas With Large Bandwidth for Space Applications , 2012, IEEE Transactions on Antennas and Propagation.

[12]  Ronan Sauleau,et al.  Fabry Perot resonators , 2005 .

[13]  Ronan Sauleau,et al.  Study of Fabry-Perot Cavities with Metal Mesh Mirrors Using Equivalent Circuit Models. Comparison with Experimental Results in the 60 GHz Band , 1998 .

[14]  Laurent Le Coq,et al.  Self-Generation of Circular Polarization Using Compact Fabry–Perot Cavity Antennas , 2011, IEEE Antennas and Wireless Propagation Letters.

[15]  V. M. Pandharipande,et al.  Millimeter wave twist reflector design aspects , 1992 .

[16]  J. Vardaxoglou,et al.  Artificial magnetic conductor surfaces and their application to low-profile high-gain planar antennas , 2005, IEEE Transactions on Antennas and Propagation.

[17]  V. Fusco,et al.  Anisotropic Impedance Surfaces for Linear to Circular Polarization Conversion , 2012, IEEE Transactions on Antennas and Propagation.

[18]  Ming Chen,et al.  A wide-band square-waveguide array polarizer , 1973 .

[19]  X. He,et al.  A broadband compound printed air-fed array antenna , 2008, 2008 International Workshop on Metamaterials.