Analysis of Slotted Sectoral Waveguide Arrays With Multilayered Radomes

Kalfa, Mert; Ertürk, Vakur B.

doi:10.1109/tap.2015.2506719

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…Similarly, an SWG mode converter has been reported having a dielectric material to help mode conversion and the results were validated using experimental measurements . The integral equation and Galerkin's method of moment were used for the analysis of SWG arrays with multilayered radomes . Until now, the MM analysis of the SWG mode converter has not been reported.…”

Section: Theory Of Characterization Of Swg Mode Convertersmentioning

confidence: 99%

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Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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An S‐band sectoral waveguide (SWG) mode converter was presented for simulation and electromagnetic analysis. A mode‐matching technique (MMT) for the electromagnetic analysis of an SWG mode converter has been proposed. The problem of trifurcation of the coaxial waveguide to shape SWGs and bifurcation of SWGs is discussed. In this framework, the selections of appropriate testing modes at each junction are justified. The simulation time has improved and the complexity of the proposed problem has reduced by the proposed approach. The numerical results of the MMT are compared against simulation results and are found to be in good agreement. The efficiency of both the simulated and analyzed results shows a mode conversion efficiency higher than 98.0%. An experimental evaluation shows the mode conversion of TM01 to TE11 mode using far‐field radiation patterns and has been compared with simulation results. Also, the MMT and simulation validate the mode conversion of TM01 to TE11 mode.

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Section: Theory Of Characterization Of Swg Mode Convertersmentioning

confidence: 99%

“…19 The integral equation and Galerkin's method of moment were used for the analysis of SWG arrays with multilayered radomes. 20 Until now, the MM analysis of the SWG mode converter has not been reported.…”

Section: Theory Of Characterization Of Swg Mode Convertersmentioning

confidence: 99%

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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“…Analysis by the method of moments (MoM) requires much less unknowns and turns out to be advantageous for a large-scale array fast design [10][11][12]. Usually, the dyadic Green's function needed for the MoM procedure could be obtained in a closed form benefit from the regular shape of the splitting segments [13][14][15], which also increases the calculation speed.…”

Section: Introductionmentioning

confidence: 99%

Effective Design of an Array of Coupling Slots With a Reflection-Canceling Wall for a Parallel-Plate Slot Array Antenna

Wang,

Tomura,

Hirokawa

2024

IEEE Access

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This paper presents an effective design of an array of coupling slots with reflection-canceling walls for uniform excitation of a parallel-plate slot array antenna panel. The coupling slot array is analyzed by Galerkin's method of moments (MoM) for the fast design by simplifying to use only uniform current on the reflection-canceling walls. It takes only 20 seconds to analyze an array of 14 coupling slots by MoM by a laptop PC having a 16-core Intel Core i7 CPU with 2.60GHz base frequency and 16 GB RAM while it takes 4 hours by HFSS. The values of parameters of each coupling slot by MoM are replaced with those by HFSS having the equal scattering matrix components.INDEX TERMS Planar slotted waveguide array, parallel-plate antenna, method of moments (MoM), equivalent relationship.

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“…A multilayer slotted sectoral waveguide array structure has been investigated in [10] due to its significant and potential application in the design of conformal arrays, reduction of radar cross section (RCS) and efficient use of the cylindrical surface to locate conformal radiating structures. In [11], a hybrid method using the combination of method of moment (MoM) and asymptotic technique has been employed for the calculation of RCS of a dielectric coated cylindrical conformal aperture array.…”

Section: Introductionmentioning

confidence: 99%

“…Also, since a single conducting interface is considered, the TE and TM modes are decoupled. The case of an axial slot array in a layered sectoral waveguide structure was treated in [10]. However, the mode excitation in the antenna structure was not examined.…”

Section: Introductionmentioning

confidence: 99%

Mode excitation and radiation characteristics of antennas in cylindrically stratified media

Bhattacharya

Ghosh

Sinha

et al. 2020

IET Microwaves, Antennas & Propagation

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Guided modes excited by a current source in a multilayer cylindrical structure is thoroughly investigated. The guidance condition in the multilayer structure is formulated. Based on this, three antenna configurations in cylindrical stratified media that are of strong practical interest are rigorously investigated: viz. a monopole antenna, a conformal axially‐directed slot antenna and an azimuthal slot antenna in a cylindrical layered medium. While previous treatments of such configurations did not investigate the mode‐excitation problem of antennas in stratified cylindrical media and were limited in their applicability for a dipole antenna in a cylindrical medium or assumed the slot‐current distribution for a slot antenna over a conducting cylinder only, the current investigation provides an in‐depth and rigorous insight to the modes excited and power coupled to the excited modes for the antenna configurations and removes such restrictions. In addition to the efficient and rigorous investigation of the coupling problem for the three antenna structures, the radiation characteristics of the antenna configurations are also evaluated using the method of stationary phase, enabling a comprehensive treatment of the antenna structures from both the coupling and radiation aspects.

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Analysis of Slotted Sectoral Waveguide Arrays With Multilayered Radomes

Cited by 7 publications

References 23 publications

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Effective Design of an Array of Coupling Slots With a Reflection-Canceling Wall for a Parallel-Plate Slot Array Antenna

Mode excitation and radiation characteristics of antennas in cylindrically stratified media

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