Design of compact EBG structure for array antenna application

In this paper, a compact electromagnetic bandgap (EBG) structure is presented. In order to achieve the size reduction, additional equivalent capacitance and equivalent inductance are produced in three design steps. The total capacitance and inductance of the proposed structure will be increased much more than the one of the mushroom-like EBG in the literature. Dispersion diagram is presented to show the bandgap characteristics. The comparison between the proposed EBG structure and different EBG structures are carried out. The proposed EBG structure exhibit a tremendous size reduction of 61%. With the aim of reducing the mutual coupling of the array patch antenna, a 2×7 EBG cells are inserted between two elements of an array antenna operating at 5.1 GHz. As the measured results, the mutual coupling has been reduced 20 dB than the one of array antenna without EBG structures.

[1]  M.Z. Azad,et al.  Wideband Smaller Unit-Cell Planar EBG Structures and Their Application , 2008, IEEE Transactions on Antennas and Propagation.

[2]  Fan Yang,et al.  A low‐profile circularly polarized curl antenna over an electromagnetic bandgap (EBG) surface , 2001 .

[3]  Y. Jiao,et al.  Miniature Electromagnetic Band-Gap Structure Using Spiral Ground Plane , 2010 .

[4]  A. Azarbar,et al.  A Compact Low-Permittivity Dual-Layer EBG Structure for Mutual Coupling Reduction , 2011 .

[5]  Nai-Chang Yuan,et al.  A Novel Compact Spiral Electromagnetic Band-Gap (EBG) Structure , 2007, IEEE Transactions on Antennas and Propagation.

[6]  Y. Rahmat-Samii,et al.  Microstrip antennas integrated with electromagnetic band-gap (EBG) structures: a low mutual coupling design for array applications , 2003 .

[7]  Y. Fan,et al.  Microstrip Antennas Integrated With Electromagnetic Band-Gap (EBG) Structures : A Low MutualCoupling Design for Array Applications , 2003 .

[8]  M.Z. Azad,et al.  Novel Wideband Directional Dipole Antenna on a Mushroom Like EBG Structure , 2008, IEEE Transactions on Antennas and Propagation.

[9]  Lin Peng,et al.  UWB Band-Notched Monopole Antenna Design Using Electromagnetic-Bandgap Structures , 2011, IEEE Transactions on Microwave Theory and Techniques.

[10]  Zhenghe Feng,et al.  A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits , 2005, IMS 2005.

[12]  G. Goussetis,et al.  Tailoring the AMC and EBG characteristics of periodic metallic arrays printed on grounded dielectric substrate , 2006, IEEE Transactions on Antennas and Propagation.

[13]  E. Rajo-Iglesias,et al.  Size Reduction of Mushroom-Type EBG Surfaces by Using Edge-Located Vias , 2007, IEEE Microwave and Wireless Components Letters.

[14]  N. Engheta,et al.  High impedance metamaterial surfaces using Hilbert-curve inclusions , 2004, IEEE Microwave and Wireless Components Letters.

[15]  D. Sievenpiper,et al.  High-impedance electromagnetic surfaces with a forbidden frequency band , 1999 .

[16]  J. Flint,et al.  Planar Electromagnetic Bandgap Structures Based on Polar Curves and Mapping Functions , 2010, IEEE Transactions on Antennas and Propagation.

[17]  Zhenghe Feng,et al.  A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits , 2005, IEEE Transactions on Microwave Theory and Techniques.

[18]  Chien Dao-Ngoc,et al.  A novel quadruple L-shaped meandered line electromagnetic band gap structure , 2010, International Conference on Communications and Electronics 2010.