Experimental demonstration of conformal phased array antenna via transformation optics

Scientific Reports
Juan LeiYang Hao

Abstract

Transformation Optics has been proven a versatile technique for designing novel electromagnetic devices and it has much wider applicability in many subject areas related to general wave equations. Among them, quasi-conformal transformation optics (QCTO) can be applied to minimize anisotropy of transformed media and has opened up the possibility to the design of broadband antennas with arbitrary geometries. In this work, a wide-angle scanning conformal phased array based on all-dielectric QCTO lens is designed and experimentally demonstrated. Excited by the same current distribution as such in a conventional planar array, the conformal system in presence of QCTO lens can preserve the same radiation characteristics of a planar array with wide-angle beam-scanning and low side lobe level (SLL). Laplace's equation subject to Dirichlet-Neumann boundary conditions is adopted to construct the mapping between the virtual and physical spaces. The isotropic lens with graded refractive index is realized by all-dielectric holey structure after an effective parameter approximation. The measurements of the fabricated system agree well with the simulated results, which demonstrate its excellent wide-angle beam scanning performance. Such demons...Continue Reading

References

May 27, 2006·Science·J B PendryD R Smith
Dec 31, 2008·Physical Review Letters·Jensen Li, J B Pendry
May 1, 2009·Nature Materials·Jason ValentineXiang Zhang
Dec 22, 2009·Nature Materials·Nathan Kundtz, David R Smith
Apr 24, 2010·Nature Materials·Huanyang ChenPing Sheng
Nov 24, 2011·Optics Express·Carlos García-MecaUlf Leonhardt
May 29, 2013·Scientific Reports·Oscar Quevedo-TeruelYang Hao

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Citations

Jun 3, 2021·Sensors·Taofeek Ayotunde YusufYongrae Roh

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Software Mentioned

AYSYS HFSS
COMSOL Multiphysics Partial Differential Equation solver
COMSOL
HFSS
ANSYS HFSS

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