Element-Independent Design of Wide-Angle Impedance Matching Radomes by Using the Generalized Scattering Matrix Approach

A rigorous and efficient approach for the design of radomes that are closely spaced to the radiating aperture of a phased array is proposed. The method relies on a generalized scattering matrix (GSM) description of both source and radome based on a Floquet modal expansion. The GSM of the unit cell of the radiating array is calculated only once. The radome, which is also frequently addressed as wide-angle impedance matching, is optimized simply by iterating with a fast solver based on the periodic method of moments. The effect of the antenna is taken into account through the connection of the GSM matrices. The proposed approach is sufficiently fast, versatile, and highly rigorous as neither homogenization procedures nor equivalent circuits are exploited. In order to verify the validity of the proposed approach, numerous examples are provided. In addition, an analysis of the accuracy of the method determined by the number of the adopted modes is also presented.

[1]  Raj Mittra,et al.  A generalized scattering matrix analysis for cascading FSS of different periodicities , 1990, International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's.

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

[3]  George V. Eleftheriades,et al.  Analysis and Characterization of a Wide-Angle Impedance Matching Metasurface for Dipole Phased Arrays , 2015, IEEE Transactions on Antennas and Propagation.

[4]  A. Neto,et al.  Wideband, Wide-Scan Planar Array of Connected Slots Loaded With Artificial Dielectric Superstrates , 2016, IEEE Transactions on Antennas and Propagation.

[5]  Dennis J Kozakoff,et al.  Analysis of radome-enclosed antennas , 1997 .

[6]  Daniele Cavallo,et al.  Analytical Formulas for Artificial Dielectrics With Nonaligned Layers , 2017, IEEE Transactions on Antennas and Propagation.

[7]  Raj Mittra,et al.  Particle Swarm Optimization for the Design of Frequency Selective Surfaces , 2006, IEEE Antennas and Wireless Propagation Letters.

[8]  Gabriel M. Rebeiz,et al.  A 77–81-GHz 16-Element Phased-Array Receiver With $\pm {\hbox{50}}^{\circ}$ Beam Scanning for Advanced Automotive Radars , 2014, IEEE Transactions on Microwave Theory and Techniques.

[9]  Raj Mittra,et al.  Finite element analysis of axisymmetric radomes , 1993 .

[10]  Filippo Costa,et al.  Wideband Radar Cross Section Reduction of Slot Antennas Arrays , 2014, IEEE Transactions on Antennas and Propagation.

[11]  Fabrizio Silvestri,et al.  Diamagneto-dielectric anisotropic wide angle impedance matching layers for active phased arrays , 2016 .

[12]  R. Hansen.  Phased Array Antennas , 2009 .

[13]  Arthur A. Oliner,et al.  Phased array antennas , 1972 .

[14]  Jeffrey S. Herd,et al.  The Evolution to Modern Phased Array Architectures , 2016, Proceedings of the IEEE.

[15]  I. Tzanidis,et al.  UWB Low-Profile Tightly Coupled Dipole Array With Integrated Balun and Edge Terminations , 2013, IEEE Transactions on Antennas and Propagation.

[16]  Rodolfo Guidi,et al.  Element-independent design technique for wide angle impedance matching material , 2016, 2016 IEEE International Symposium on Antennas and Propagation (APSURSI).

[17]  D. Cavallo,et al.  Edge-Born Waves in Connected Arrays: A Finite$\,\times\,$Infinite Analytical Representation , 2011, IEEE Transactions on Antennas and Propagation.

[18]  G. Gerini,et al.  Multimode Equivalent Networks for the Design and Analysis of Frequency Selective Surfaces , 2007, IEEE Transactions on Antennas and Propagation.

[19]  J. A. Shifflett,et al.  CADDRAD: a physical optics radar/radome analysis code for arbitrary 3D geometries , 1997 .

[20]  R. Mittra.  A look at some challenging problems in computational electromagnetics , 2004, IEEE Antennas and Propagation Magazine.

[21]  R. Harrington,et al.  An impedance sheet approximation for thin dielectric shells , 1975 .

[22]  Simone Genovesi,et al.  Fast Optimization of Ultra-Broadband Antennas With Distributed Matching Networks , 2014, IEEE Antennas and Wireless Propagation Letters.

[23]  A. Bhattacharyaa,et al.  Analysis of multilayer infinite periodic array structures with different periodicities and axes orientations , 2000 .

[24]  Francisco Falcone,et al.  Experimental demonstration of metamaterials application for mitigating scan blindness in phased array antennas , 2016 .

[25]  D. Cavallo,et al.  Closed-Form Analysis of Artificial Dielectric Layers—Part II: Extension to Multiple Layers and Arbitrary Illumination , 2014, IEEE Transactions on Antennas and Propagation.

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

[27]  Raj Mittra,et al.  Generalized Scattering Matrix Technique , 2005 .

[28]  Raj Mittra,et al.  Analytical techniques in the theory of guided waves , 1971 .

[29]  J. Volakis,et al.  Hybrid PO-MoM analysis of large axi-symmetric radomes , 2001 .

[30]  Andrea Neto,et al.  Edge-Born Waves in Connected Arrays : A Finite Infinite Analytical Representation , 2011 .

[31]  Robert W. Heath,et al.  Five disruptive technology directions for 5G , 2013, IEEE Communications Magazine.

[32]  Jennifer Nacht,et al.  Analytical Modeling In Applied Electromagnetics , 2016 .