Frequency Selective Surfaces for Beam-Switching Applications

A novel design of a beam-switching antenna based on reconfigurable frequency selective surfaces (FSSs) is presented. The antenna is composed of a cylindrical FSS with PIN diodes and divided into six equal sectors by metallic sheets. Metallic cones at the top and bottom of the structure are used to create a directive beam. The antenna is fed by a simple dipole at its center. To switch the radiation pattern of the antenna, the diodes in one FSS-sector are set off to be transparent to the incident EM waves, whereas the diodes in other sectors are on to reflect the incident wave. The direction of the radiation pattern is defined by the off-state sector. In this design, the beam-switching is achieved with only one layer and minimum size of the cylindrical active FSS in order to decrease the number of active elements, and the amount of the power supply. The antenna can sweep the entire azimuth plane with 60° radiation beamwidth in six steps. The fabricated antenna prototype operates from 2.3 GHz to 3 GHz with maximum measured gain of 10 dBi and 3-dB beamwidth of 60°. This antenna can be used in the base station of the wireless communication systems.

[1]  Michael T. Chryssomallis,et al.  Smart antennas , 2000 .

[2]  Tayeb A. Denidni,et al.  Beam-switching antenna based on active Frequency Selective Surfaces , 2011, 2011 IEEE International Symposium on Antennas and Propagation (APSURSI).

[3]  T. Denidni,et al.  High-Gain Reconfigurable Sectoral Antenna Using an Active Cylindrical FSS Structure , 2011, IEEE Transactions on Antennas and Propagation.

[4]  Ming-Iu Lai,et al.  Compact Switched-Beam Antenna Employing a Four-Element Slot Antenna Array for Digital Home Applications , 2008, IEEE Transactions on Antennas and Propagation.

[5]  P. Russo,et al.  Design and Prototyping of a Switching Beam Disc Antenna for Wideband Communications , 2006, IEEE Transactions on Antennas and Propagation.

[6]  L. Talbi,et al.  Analysis and design of a cylindrical EBG-based directive antenna , 2006, IEEE Transactions on Antennas and Propagation.

[7]  T.A. Denidni,et al.  Novel butler matrix using CPW multilayer technology , 2005, IEEE Transactions on Microwave Theory and Techniques.

[8]  Martin Haardt,et al.  Smart antenna technologies for future wireless systems: trends and challenges , 2004, IEEE Communications Magazine.

[9]  L. Manholm,et al.  Low-loss compact Butler matrix for a microstrip antenna , 2002 .

[10]  D. Parker,et al.  Phased arrays-part II: implementations, applications, and future trends , 2002 .

[11]  D. Parker,et al.  Phased arrays - part 1: theory and architectures , 2002 .

[12]  D. Parker,et al.  Microwave industry outlook - defense applications , 2002 .

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

[14]  P. Pouliguen,et al.  Active metallic photonic band-gap materials (MPBG): experimental results on beam shaper , 2000 .

[15]  R. Mittra,et al.  Techniques for analyzing frequency selective surfaces-a review , 1988, Proc. IEEE.

[16]  H. Kalhor.  Electromagnetic scattering by a dielectric slab loaded with a periodic array of strips over a ground plane , 1988 .

[17]  J. Montgomery,et al.  Scattering by an infinite periodic array of thin conductors on a dielectric sheet , 1975 .