A Leaky-Wave Antenna With Controlled Radiation Using a Bianisotropic Huygens’ Metasurface

In this paper, a novel concept of a leaky-wave antenna is proposed, based on the use of Huygens’ metasurfaces. It consists of a parallel-plate waveguide in which the top plate is replaced by a bianisotropic metasurface of the omega type. It is shown that there is an exact solution to transform the guided mode into a leaky mode with arbitrary control of the constant leakage factor and the pointing direction. Although the solution turns out to be periodic, only one Floquet mode is excited and radiates, even for electrically long periods. Thanks to the intrinsic spurious Floquet mode suppression, broadside radiation can be achieved without any degradation. Simulations with idealized reactance sheets verify the concept. Moreover, physical structures compatible with PCB fabrication have been proposed and designed, considering aspects such as the effect of losses. Finally, experimental results of two prototypes are presented and discussed.

[1]  G. Eleftheriades,et al.  Bianisotropic Huygens' metasurface leaky-wave antenna with flexible design parameters , 2017, 2017 11th European Conference on Antennas and Propagation (EUCAP).

[2]  A. Alú,et al.  Full control of nanoscale optical transmission with a composite metascreen. , 2013, Physical review letters.

[3]  David R. Smith,et al.  An Overview of the Theory and Applications of Metasurfaces: The Two-Dimensional Equivalents of Metamaterials , 2012, IEEE Antennas and Propagation Magazine.

[4]  D. González-Ovejero,et al.  Modulated Metasurface Antennas for Space: Synthesis, Analysis and Realizations , 2015, IEEE Transactions on Antennas and Propagation.

[5]  K. Solbach,et al.  Transmission Line Modeling and Asymptotic Formulas for Periodic Leaky-Wave Antennas Scanning Through Broadside , 2011, IEEE Transactions on Antennas and Propagation.

[6]  J. Esteban,et al.  Short dual-band planar leaky-wave antenna with broadside effect mitigation , 2016 .

[7]  F. Caminita,et al.  Spiral Leaky-Wave Antennas Based on Modulated Surface Impedance , 2011, IEEE Transactions on Antennas and Propagation.

[8]  Ning Yang,et al.  Full-Space Scanning Periodic Phase-Reversal Leaky-Wave Antenna , 2010, IEEE Transactions on Microwave Theory and Techniques.

[9]  C. Holloway,et al.  Averaged transition conditions for electromagnetic fields at a metafilm , 2003 .

[10]  Brian B. Tierney,et al.  Controlling Leaky Waves With 1-D Cascaded Metasurfaces , 2018, IEEE Transactions on Antennas and Propagation.

[11]  D. Jackson,et al.  A Novel Technique for Open-Stopband Suppression in 1-D Periodic Printed Leaky-Wave Antennas , 2009, IEEE Transactions on Antennas and Propagation.

[12]  Amit M. Patel,et al.  A Printed Leaky-Wave Antenna Based on a Sinusoidally-Modulated Reactance Surface , 2011, IEEE Transactions on Antennas and Propagation.

[13]  G. Eleftheriades,et al.  Passive Lossless Huygens Metasurfaces for Conversion of Arbitrary Source Field to Directive Radiation , 2014, IEEE Transactions on Antennas and Propagation.

[14]  Balanced and optimal bianisotropic particles: maximizing power extracted from electromagnetic fields , 2013, 1302.2782.

[15]  C. Pfeiffer,et al.  Metamaterial Huygens' surfaces: tailoring wave fronts with reflectionless sheets. , 2013, Physical review letters.

[16]  George V. Eleftheriades,et al.  Arbitrary Power-Conserving Field Transformations With Passive Lossless Omega-Type Bianisotropic Metasurfaces , 2016, IEEE Transactions on Antennas and Propagation.

[17]  M. Sabbadini,et al.  Realization and Measurement of Broadside Beam Modulated Metasurface Antennas , 2016, IEEE Antennas and Wireless Propagation Letters.

[18]  George V. Eleftheriades,et al.  Circuit Modeling of Huygens Surfaces , 2013, IEEE Antennas and Wireless Propagation Letters.

[19]  G. Goussetis,et al.  Planar Leaky-Wave Antenna With Flexible Control of the Complex Propagation Constant , 2012, IEEE Transactions on Antennas and Propagation.

[20]  D. Sievenpiper,et al.  Scalar and Tensor Holographic Artificial Impedance Surfaces , 2010, IEEE Transactions on Antennas and Propagation.

[21]  Brian B. Tierney,et al.  Arbitrary Beam Shaping Using 1-D Impedance Surfaces Supporting Leaky Waves , 2015, IEEE Transactions on Antennas and Propagation.

[22]  G. Eleftheriades,et al.  Discontinuous electromagnetic fields using orthogonal electric and magnetic currents for wavefront manipulation. , 2013, Optics express.

[23]  Anthony Grbic,et al.  Bianisotropic Metasurfaces for Optimal Polarization Control: Analysis and Synthesis , 2014 .

[24]  Sergei A. Tretyakov,et al.  Susceptibility Derivation and Experimental Demonstration of Refracting Metasurfaces Without Spurious Diffraction , 2018, IEEE Transactions on Antennas and Propagation.

[25]  Tatsuo Itoh,et al.  Dominant mode leaky-wave antenna with backfire-to-endfire scanning capability , 2002 .

[26]  Ariel Epstein,et al.  Synthesis of Passive Lossless Metasurfaces Using Auxiliary Fields for Reflectionless Beam Splitting and Perfect Reflection. , 2016, Physical review letters.

[27]  Ariel Epstein,et al.  Cavity-excited Huygens' metasurface antennas for near-unity aperture illumination efficiency from arbitrarily large apertures , 2015, Nature Communications.

[28]  Christophe Caloz,et al.  Transversal Asymmetry in Periodic Leaky-Wave Antennas for Bloch Impedance and Radiation Efficiency Equalization Through Broadside , 2014, IEEE Transactions on Antennas and Propagation.

[29]  M. Chen,et al.  Theory, design, and experimental verification of a reflectionless bianisotropic Huygens' metasurface for wide-angle refraction. , 2018, 1812.05084.

[30]  D. Jackson,et al.  Leaky‐Wave Antennas , 2008 .

[31]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .