A pole-zero matching method for EBG surfaces composed of a dipole FSS printed on a grounded dielectric slab

Maci, S.; Caiazzo, M.; Cucini, A.; Casaletti, Massimiliano

doi:10.1109/tap.2004.840520

Cited by 177 publications

(101 citation statements)

References 24 publications

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“…They can be analyzed by the equivalent LC-network associated with the FSS. The analytical expression of the equivalent admittance Y FSS (k, ω) of the network is given by [26]:…”

Section: Theoretical Analysismentioning

confidence: 99%

A Pole and Amc Point Matching Method for the Synthesis of HSF-Uc-Ebg Structure With Simultaneous Amc and Ebg Properties

Zhao¹,

Yang²,

Tian³

et al. 2013

PIER

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Abstract-The relationship between the reflection phase curve and the dispersion curve of a H-shaped slot fractal uniplanar compact electromagnetic bandgap (HSF-UC-EBG) structure is investigated in this paper. It is demonstrated numerically and theoretically that the pole (located at phi = 180 degrees) of the reflection phase curve is related to the EBG location of the dispersion curve. More specifically, the pole is always located in the bandgap and the frequency shift characteristics of the pole and the EBG location are the same. Therefore, locations of the artificial magnetic conductor (AMC) and EBG can match with the AMC point and the pole, respectively. By realizing and making appropriate use of this, we can tailor the AMC and EBG locations to coincide in the frequency region only by reducing the spectral distance (d) between the AMC point and the pole. This method can improve the computational efficiency significantly. Parametric studies have been performed to obtain guidelines for reducing d. Finally, an example to design HSF-UC-EBG structure with simultaneous AMC and EBG properties by using this technique is presented with detail steps.

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“…They can be analyzed by the equivalent LC-network associated with the FSS. The analytical expression of the equivalent admittance Y FSS (k, ω) of the network is given by [26]:…”

Section: Theoretical Analysismentioning

confidence: 99%

A Pole and Amc Point Matching Method for the Synthesis of HSF-Uc-Ebg Structure With Simultaneous Amc and Ebg Properties

Zhao¹,

Yang²,

Tian³

et al. 2013

PIER

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show abstract

“…This includes the use of simple dielectrics [3], electromagnetic band gap structures [4], artificial magnetics [5] and highly reflective frequency selective surfaces (FSS) [6,7]. The technique of using a highly reflective frequency selective surfaces (FSS) for directivity and gain enhancement has been proved quite effective [7][8][9][10]. Design of Rectangular patch type FSS superstrate has been reported with printed dipole as a source antenna [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Cavity Reflex Antenna Using Circular Patch Type FSS Superstrate

Kotnala¹,

Juyal²,

Mittal³

et al. 2012

PIER B

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Abstract-Cavity reflex antenna (CRA) employing a circular patch type FSS (Frequency Selective Surface) superstrate is investigated. Analysis in terms of gain, bandwidth (impedance and gain) and radiation pattern has been presented. The aim of this work was to study low profile CRA having very thin superstrate sizes. In this CRA a circular patch antenna is used as a feeding source. The circular patch type FSS possesses some unique properties favorable for thin superstrate sizes. In practice when the excitation source of the CRA is a probe-fed microstrip antenna with finite ground plane, substrate and superstrate, cross-polarization increases. In the presented design, the cross polar level has been reduced by choosing the optimum air gap and superstrate geometrical and electrical properties. A CRA with circular patch type FSS offers better performance both in terms of gain and impedance bandwidth for, thin superstrates (0.008λ 0 ) while giving a gain of 13 dBi and considerably reduced crosspolar level. The proposed antenna exhibit nearly equal E-plane and H-plane radiation pattern. Measurement results are provided to support the simulated results (by Ansoft HFSS). The circular patch type FSS is easy to fabricate and can be embedded into the host profile.

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“…Fortunately, such specular reflection can be calculated by using simple equivalent network that can be obtained by fitting the reflections for few angles of incidence [16][17][18][19][20][21]. Then by applying this equivalent network in the spectral integration, one can obtain the integrand for any spectral point by using simple forms.…”

Section: Introductionmentioning

confidence: 99%

“…However, to be more specific it is required here to present a method for obtaining the Green's function of a periodically-defected-grounded dielectric slab as shown in Figure 2. Such periodic defect in the ground plane which represents a frequency selective surface (FSS) is expected to have a significant role in controlling the properties of printed antenna structures [4,5,11,21,23]. Thus, the problem here is to obtain an equivalent circuit for the FSS and to use this equivalent circuit in formulating and calculating the Green's function of the corresponding periodically defected grounded dielectric slab.…”

Section: Introductionmentioning

confidence: 99%

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Dyadic Green's Function of an Elementary Point Source Above a Periodically-Defected-Grounded Dielectric Slab

Attiya¹

2008

PIER B

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Abstract-A general formulation of Dyadic Green's function for a point source above a two-dimensional periodic boundary is presented in spectral form. This formulation is simplified by considering only the zero term of the infinite Floquet modes. Then it is applied to obtain the Dyadic Green's function of a printed source above a dielectric slab with periodically defected ground plane by using a generalized equivalent network of this defected ground plane. This equivalent network is obtained from the reflection coefficients of the defectedgrounded slab for different angles of incidence. This network includes equivalent impedances of the periodic surface for both TE and TM incident waves. In addition, it includes coupling impedance between the equivalent TE and TM networks. By determining the generalized equivalent network of the ground plane, the problem of the Green's function can be formulated by coupled TE and TM transmission line networks.

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A pole-zero matching method for EBG surfaces composed of a dipole FSS printed on a grounded dielectric slab

Cited by 177 publications

References 24 publications

A Pole and Amc Point Matching Method for the Synthesis of HSF-Uc-Ebg Structure With Simultaneous Amc and Ebg Properties

A Pole and Amc Point Matching Method for the Synthesis of HSF-Uc-Ebg Structure With Simultaneous Amc and Ebg Properties

Investigation of Cavity Reflex Antenna Using Circular Patch Type FSS Superstrate

Dyadic Green's Function of an Elementary Point Source Above a Periodically-Defected-Grounded Dielectric Slab

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