Selective Suppression of Electromagnetic Modes in a Rectangular Waveguide by Using Distributed Wall Losses

Jiao, Chongqing

doi:10.2528/pierl11013102

Cited by 16 publications

(8 citation statements)

References 24 publications

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“…The reviews [48] [35], [47], [16], [46] [13] provide detailed accounts of past and recent developments in acoustic active control. In a waveguide geometry, acoustic noise control was considered in [51] for a finite length duct, and suppression of unwanted electromagnetic modes was studied in [25] for a rectangular waveguide and respectively in [17] for slotted waveguides.…”

Section: Related Workmentioning

confidence: 99%

Active manipulation of EM fields in open waveguides

Onofrei

Albanese

2017

Wave Motion

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The central question addressed in this paper is whether we can introduce an antenna array into a circular cylindrical waveguide to accurately control or determine the local field around the array with vanishingly small reflection from the boundary of the waveguide. We ask this question since we perceive the answer to be important to the applied community through its relevance for applications to electromagnetic shielding or slot antennas. We make use of the results presented in [44] for the scalar Helmholtz equation and show, by using the Debye representation in waveguides, how they apply to the current EM waveguide model. We prove the existence of a class of solutions and include a feasibility discussion for the antenna synthesis problem together with relevant simulations.

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Section: Related Workmentioning

confidence: 99%

Active manipulation of EM fields in open waveguides

Onofrei

Albanese

2017

Wave Motion

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“…The methods of straight waveguides have been proposed in the literature. A method of selective suppression of electromagnetic modes in rectangular waveguides by loading distributed losses in some special position of waveguide inner wall has been presented (Jiao, 2011). In this paper, the unwanted modes can be attenuated much larger relative to the operating mode and this proposed method can be used to improve the stability of rectangular waveguide beam-wave interaction circuit.…”

Section: Introductionmentioning

confidence: 99%

Circular and Periodic Circular Profiles in a Rectangular Cross Section Along the Straight Waveguide

Menachem

Tapuchi²

2015

APR

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The first objective of this paper is to present a technique and a particular application to calculate the dielectric profile, the elements of the matrix, and its derivatives of the dielectric profile in the cases of circular and periodic circular profiles in the cross section of the rectangular straight waveguide. The second objective is to investigate the influence of the circular and periodic circular profiles on the output fields. The proposed technique relates to the method that is based on the Laplace and Fourier transforms, the inverse Laplace and Fourier transforms. This model is useful to predict the structure of the output fields for circular and periodic circular profiles in a rectangular metallic waveguide. The application is useful for straight waveguides in the microwave and the millimeter-wave regimes.

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“…Selective suppression of electromagnetic modes in rectangular waveguides has been presented [8] by using distributed wall losses. Analytical model for the corrugated rectangular waveguide has been extended to compute the dispersion and interaction impedance [9].…”

Section: Introductionmentioning

confidence: 99%

Applications and Solving Techniques of Propagated Wave in Waveguides Filled with Inhomogeneous Dielectric Materials

Menachem¹

2018

Emerging Waveguide Technology

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This chapter presents techniques to solve problems of propagation along the straight rectangular and circular waveguides with inhomogeneous dielectric materials in the cross section. These techniques are very important to improve the methods that are based on Laplace and Fourier transforms and their inverse transforms also for the discontinuous rectangular and circular profiles in the cross section (and not only for the continuous profiles). The main objective of this chapter is to develop the techniques that enable us to solve problems with inhomogeneous dielectric materials in the cross section of the straight rectangular and circular waveguides. The second objective is to understand the influence of the inhomogeneous dielectric materials on the output fields. The method in this chapter is based on the Laplace and Fourier transforms and their inverse transforms. The proposed techniques together with the methods that are based on Laplace and Fourier transforms and their inverse transforms are important to improve the methods also for the discontinuous rectangular and circular profiles in the cross section. The applications are useful for straight waveguides in the microwave and the millimeter-wave regimes, for the straight hollow waveguide and for infrared field, also in the cases of inhomogeneous dielectric materials in the cross section. Emerging Waveguide Technology 298 Applications and Solving Techniques of Propagated Wave in Waveguides Filled with Inhomogeneous Dielectric… http://dx.doi.org/10.5772/intechopen.76793 299 Emerging Waveguide Technology 312the cases of infrared regime. These models can be a useful tool to predict the relevant parameters for practical applications, before carrying out experiments in the laboratory.

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Selective Suppression of Electromagnetic Modes in a Rectangular Waveguide by Using Distributed Wall Losses

Cited by 16 publications

References 24 publications

Active manipulation of EM fields in open waveguides

Active manipulation of EM fields in open waveguides

Circular and Periodic Circular Profiles in a Rectangular Cross Section Along the Straight Waveguide

Applications and Solving Techniques of Propagated Wave in Waveguides Filled with Inhomogeneous Dielectric Materials

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