On the Use of the Source Reconstruction Method for Metasurface Design

Brown, Thomas J.; Narendra, Chaitanya; Mojabi, Puyan

doi:10.1049/cp.2018.0661

Cited by 11 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have recently proposed and used the electromagnetic inverse source framework for the design of metasurfaces [32], [33]. In addition to applying the inverse source framework to metasurface design, these works extend it to more practical scenarios: those where the desired specifications are expressed in terms of some performance criteria (e.g., HPBW and null directions) rather than a completely-known desired field pattern.…”

Section: Electromagnetic Inversion For Designmentioning

confidence: 99%

On the Use of Electromagnetic Inversion for Metasurface Design

Brown

Narendra

Vahabzadeh

et al. 2020

IEEE Trans. Antennas Propagat.

111

View full text Add to dashboard Cite

We show that the use of the electromagnetic inverse source framework offers great flexibility in the design of metasurfaces. In particular, this approach is advantageous for antenna design applications where the goal is often to satisfy a set of performance criteria such as half power beamwidths and null directions, rather than satisfying a fully-known complex field. In addition, the inverse source formulation allows the metasurface and the region over which the desired field specifications are provided to be of arbitrary shape. Some of the main challenges in solving this inverse source problem, such as formulating and optimizing a nonlinear cost functional, are addressed. Lastly, some two-dimensional (2D) and three-dimensional (3D) simulated examples are presented to demonstrate the method, followed by a discussion of the method's current limitations.

show abstract

Section: Electromagnetic Inversion For Designmentioning

confidence: 99%

On the Use of Electromagnetic Inversion for Metasurface Design

Brown

Narendra

Vahabzadeh

et al. 2020

IEEE Trans. Antennas Propagat.

111

View full text Add to dashboard Cite

show abstract

“…The first part of the procedure is to find a field distribution on the metasurface boundary that produces a far-field (FF) pattern exhibiting the desired performance specifications. As described in [7], we use an inverse source technique to find a set of equivalent electric and magnetic currents ( J and M ) on the metasurface boundary that produce a satisfactory FF pattern. These currents are found through the optimization of an appropriate cost functional using the conjugate gradient (CG) method.…”

Section: Inverse Source Frameworkmentioning

confidence: 99%

“…The example presented here is restricted to 2D for ease of simulation, but the general framework is applicable to 3D problems as presented in [7]. We consider the TE z polarization, where E x , E y , and H z are the only nonzero field components.…”

Section: Illustrative Examplementioning

confidence: 99%

“…In [7], an inverse source algorithm was presented that offers more flexibility to the macroscopic design of metasurfaces: the ability to perform the design from a set of desired performance specifications for the transmitted field rather than its explicit expression. This approach can be more practical for antenna engineering applications as these performance specifications can be, for example, main beam directions, null directions, half-power beamwidth (HPBW), and polarization.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metasurface Design Using Electromagnetic Inversion

Brown¹,

Narendra²,

Vahabzadeh³

et al. 2020

Preprint

View full text Add to dashboard Cite

<p>This paper summarizes and synthetically evaluates a method proposed for metasurface design. The method takes as input a set of desired far-field (FF) performance specifications and produces an effective susceptibility distribution that, when illuminated with a known incident field, produces a FF radiation pattern exhibiting the desired specifications. To this end, electromagnetic inversion (inverse source) is used to solve for the desired tangential fields on the output side of the metasurface. A finite-difference frequency-domain solver, recently developed for simulation of metasurfaces, is used to synthetically evaluate the proposed method using a two-dimensional (2D) example. It should be noted that microscopic metasurface design (i.e., the design of the physical metasurface implementation) is beyond the scope of this paper.</p>

show abstract

“…Metasurfaces can facilitate the systematic control of electromagnetic fields with numerous applications reported in the past decade [1]- [5]. Recently, the electromagnetic inversion framework has been proposed as a design tool to determine a homogenized metasurface model [6], [7]. The main advantage of this framework lies in its ability to work with a variety of desired specifications given on arbitrary specification domains.…”

Section: Introductionmentioning

confidence: 99%

Full-Wave Verification of an Electromagnetic Inversion Metasurface Design Method

Brown¹,

Liu²,

Mojabi³

2020

Preprint

View full text Add to dashboard Cite

This paper summarizes, extends, and synthetically evaluates a method for metasurface design which uses electromagnetic inversion. After the inversion algorithm determines a homogenized surface susceptibility model to implement a desired power pattern, the susceptibility distribution is converted to a three-layer admittance sheet topology. Lastly, full-wave commercial software is used to simulate and verify the performance of a metasurface designed and implemented using the proposed procedure.

show abstract

On the Use of the Source Reconstruction Method for Metasurface Design

Cited by 11 publications

References 0 publications

On the Use of Electromagnetic Inversion for Metasurface Design

On the Use of Electromagnetic Inversion for Metasurface Design

Metasurface Design Using Electromagnetic Inversion

Full-Wave Verification of an Electromagnetic Inversion Metasurface Design Method

Contact Info

Product

Resources

About