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

Attiya, Ahmed M.

doi:10.2528/pierb08011001

Cited by 7 publications

(4 citation statements)

References 27 publications

(25 reference statements)

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“…5 and 6, the total field, both the trapped surface waves of electric type (TM) and magnetic type (TE), and the lateral wave are calculated from (27) for E r 0Θ (r 0 , Θ, Φ) and (28) for E r 0Φ (r 0 , Θ, Φ), respectively. Graphs of the amplitudes of the components E r 0Θ (r 0 , Θ, Φ) and E r 0Φ (r 0 , Θ, Φ) for a unit horizontal dipole vs. the angular degrees of Θ are computed and shown in Figs.…”

Section: Computations and Discussionmentioning

confidence: 99%

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Radiation of a Horizontal Dipole in the Presence of a Three-Layered Region and Microstrip Antenna

Liang¹,

Li²,

Xu³

2008

PIER

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Abstract-In this paper, we study in detail both the trapped surface wave and lateral wave excited by a dipole antenna parallel to the plane boundaries of a three-layered region in spherical coordinate. An approximate formula is obtained for the solution of the electrictype pole equation when a condition is satisfied by k 2 1 − k 2 0 l ≤ 0.6. Similarly, an approximate formula is obtained for the solution of the magnetic-type pole equation when a condition is satisfied byFurthermore, because of its useful applications in microstrip antenna, the radiation patterns of a patch antenna with specific current distributions are treated specifically. Analysis and computations are carried out in several typical cases. It is seen that, for the component E 0Θ , the total field is determined primarily by the trapped surface wave of electric type, and, for the component E 0Φ , the total field is determined primarily by the trapped surface wave of magnetic type.

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Section: Computations and Discussionmentioning

confidence: 99%

“…Multiplying (27), (28), (30), and (31) by the field factor in (45), the far-field components of the patch antenna are expressed as follows:…”

Section: Microstrip Antennamentioning

confidence: 99%

Radiation of a Horizontal Dipole in the Presence of a Three-Layered Region and Microstrip Antenna

Liang¹,

Li²,

Xu³

2008

PIER

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“…Today, DGS for the microstrip lines that has engraved defects in the backside metallic ground plane has become one hot area in microwave integrated circuits (MIC) design [6] [16]. In numerous wireless communication systems, microstrip patch antennas are utilized widely because of their several benefits such as low profile, light weight, easy fabrication and conformability to mounting structure [12] [18].…”

Section: Introductionmentioning

confidence: 99%

Analyzing Uncertainties of Rectangular Periodic Defected Ground Structure Characteristics

Kuravatti¹,

Rukmini²

2012

IJCA

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The defected ground structure (DGS) is one such technique which where intentionally modified to enhance the performance of the ground plane metal of a microstrip circuit. Importantly, in microwave application, the DGS plays an important role in analyzing the effect of surface and leaky waves. During the time of experimental analysis, the surface and leaky waves are affected by the propagation uncertainties. Hence, the performance of microstrip circuit is also affected. So, proper mathematical model is needed for analyzing the propagation uncertainty of DGS and to improve the performance. In this paper, the curve fitting mathematical model is proposed for analyzing the propagation uncertainty. In the proposed model, the bi-segmentation process is applied to the experimental characteristics. The proposed curve fitting model is implemented and the Rectangular Periodic defected ground structure propagation uncertainties are analyzed.

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“…In order to solve this problem, a Green's function technique is adopted [10][11][12][13][14][15][16]. According to the Reciprocity theorem, a response of a system to a source is unchanged when source and measurer are interchanged.…”

Section: Theoretical Electromagnetic Analysismentioning

confidence: 99%

Electromagnetic Analysis of a Non Invasive Microwave Radiometry Imaging System Emphasizing on the Focusing Sensitivity Optimization

Giamalaki¹,

Karanasiou²,

Uzunoglu

2009

PIER

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Abstract-A Green's function based methodology has been developed and implemented with the view to optimize the focusing properties and thus the performance of a Microwave Radiometry Imaging System (MiRaIS). The system consists of an ellipsoidal conductive wall cavity and a sensitive radiometric receiver and its operation principal is based on the convergence of the radiation from one focal point, where the subject or phantom is placed, on the other, where the receiver antenna is positioned. A two-layered cylinder is used to model the human head with the semi-analytical Green's function technique. The imaging configuration is enhanced by different matching structures of various materials which are placed on the surface of both the human head model and the antenna inside the ellipsoidal. Numerical code executions have been realized and the results for the electric field distribution inside the head are presented for materials of various dielectric properties and for left handed materials at two different frequencies (0.5 GHz and 1.0 GHz). Increased sensitivity of the system focusing properties is observed using particular matching structures.

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

Cited by 7 publications

References 27 publications

Radiation of a Horizontal Dipole in the Presence of a Three-Layered Region and Microstrip Antenna

Radiation of a Horizontal Dipole in the Presence of a Three-Layered Region and Microstrip Antenna

Analyzing Uncertainties of Rectangular Periodic Defected Ground Structure Characteristics

Electromagnetic Analysis of a Non Invasive Microwave Radiometry Imaging System Emphasizing on the Focusing Sensitivity Optimization

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