A full-wave numerical approach for modal analysis of 1-D periodic microstrip structures

Baccarelli, Paolo; Nallo, C. Di; Paulotto, S.; Jackson, David R.

doi:10.1109/tmtt.2006.871353

Cited by 74 publications

(95 citation statements)

References 34 publications

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“…An alternative antenna design was proposed in [13] to allow the deep-penetration condition. The designed antenna was based on uniform and mono-dimensional LWAs, in particular, a microstrip LWA [14] derived from the Menzel antenna [15] was considered and designed using the method proposed in [16]. [14], but this value was not sufficient for deep-penetration.…”

Section: Large Em Penetration Employing Leaky-wave Antennasmentioning

confidence: 99%

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Frezza

Simeoni²,

Tedeschi³

2017

JTIT

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Abstract-Recent studies highlighted deep-penetration properties of inhomogeneous waves at the interface between a lossless and a lossy medium. Such waves can be generated by means of radiating structures known as Leaky-Wave Antennas (LWAs). Here, a different approach is proposed based on the use of a lossy prism capable to generate an inhomogeneous wave when illuminated by a homogeneous wave. The lossy prism is conceived and designed thinking of GroundPenetrating Radar (GPR). The results achieved by the lossy prism will be compared with those obtained by means of a previously designed LWA that was created with the identical objective. The approach of this paper is purely theoretical, and it aims at providing basic ideas and preliminary results useful for an innovative LWA design.

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Section: Large Em Penetration Employing Leaky-wave Antennasmentioning

confidence: 99%

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Frezza

Simeoni²,

Tedeschi³

2017

JTIT

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“…Bound modes are nonradiating modes: all the Floquet waves decay exponentially away from the structure (α z;pq > 0), being jβ pq j > k (outside the visible region) for all ðp; qÞ indices, so that the only decay is associated with the metal or host losses [42,47,48]. If at least one of the Floquet waves is faster than the speed of light [49] [namely, at least one spatial harmonic is in the visible region, i.e., jβ pq j < k for some ðp; qÞ], the mode is a radiating mode or leaky mode; i.e., at least one of the spatial harmonics is radiating or leaking energy into space (see, for instance, Table 12.1 in [42] for a summary of this classification of complex modes). In uniform structures, this radiation takes place in the forward direction (β pq · α > 0), and the wave grows unbounded for growing jzj.…”

Section: Statement Of the Problemmentioning

confidence: 99%

Characterization of complex plasmonic modes in two-dimensional periodic arrays of metal nanospheres

et al. 2011

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Two-dimensional periodic arrays of noble metal nanospheres support a variety of optical phenomena, including bound and leaky modes of several types. The scope of this paper is the characterization of the modal dispersion diagrams of planar arrays of silver nanospheres, with the ability to follow individual modal evolutions. The metal spherical nanoparticles are described using the single dipole approximation technique by including all the retarded dynamic field terms. Polarizability of the nanospheres is provided by the Mie theory. Dispersion diagrams for both physical and nonphysical modes are shown for a square lattice of Ag nanospheres for the case of lossless and lossy metal particles, with dipole moments polarized along the x, y, and z directions. Though an array with one set of parameters has been studied, the analysis method and classification are general. The evolution of modes through different Riemann sheets and analysis of guidance and radiation are studied in detail.

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“…Therefore full-wave numerical simulations are commonly used for their design and analysis [4][5][6]. In general, full-wave numerical simulations of passive periodic structures are relatively less demanding since they usually require only one simulation run.…”

Section: Introductionmentioning

confidence: 99%

Equivalent-Circuit Models for Efficient Transmission and Dispersion Analyses of Multi-State Periodic Structures

Matekovits

Thalakotuna²,

Hay

et al. 2015

PIER

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Abstract-An equivalent-circuit model for a reconfigurable unit cell is proposed. This circuit model facilitates fast prediction of scattering parameters and dispersion analyses of a reconfigurable periodic structure. The cutoff frequencies obtained using equivalent-circuit models are in excellent agreement with those from measurements and full-wave numerical simulations. The proposed circuit model is then modified to include non-ideal, commercial RF FET switches. The effect of such a switch in each state, On or Off, is modeled by a frequency-dependant impedance, derived from the scattering parameters of the switch. The proposed technique can be used to analyze a reconfigurable periodic structure with any type of switches. For the structure with 24 unit cells considered here, the equivalent circuit model is about five orders of magnitude faster than full-wave simulations.

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A full-wave numerical approach for modal analysis of 1-D periodic microstrip structures

Cited by 74 publications

References 34 publications

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Characterization of complex plasmonic modes in two-dimensional periodic arrays of metal nanospheres

Equivalent-Circuit Models for Efficient Transmission and Dispersion Analyses of Multi-State Periodic Structures

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