Analysis of conical quasi-TEM horn with a hard corrugated section

Skobelev, Sergei P.; Kildal, Per-Simon

doi:10.1109/tap.2003.817564

Cited by 28 publications

(11 citation statements)

References 17 publications

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“…In recent years, investigation on horn antennas have been widely developed to improve the horn antennas performances such as high gain and dual polarization, higher aperture efficiency and low cross polarization, ultra‐wide band and lager aperture, for various application. In this paper, the proposed horn antenna is a pyramidal type loaded with metamaterial used for L‐band and terrestrial digital audio broadcast T‐DAB, the idea is to exhibit the gain enhancement and miniaturization of the antenna.…”

Section: Introductionmentioning

confidence: 99%

Characterization of horn antenna loaded with CLL unit cell

Lashab

Zebiri

Djouablia

et al. 2018

Micro & Optical Tech Letters

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In this paper, a pyramidal horn antenna loaded with unit cell of metamaterial is proposed, designed and realized for L‐band that including terrestrial digital audio broadcasting T‐DAB, GPS, and GSM. The proposed antenna operates in the frequency range from 1.722 to 1.931 GHz. The metamaterial is fabricated on a printed circuit board as Capacitive Loaded Loop (CLL). The work aims to exhibit the advantage of metamaterial loaded inside the horn antenna in terms of the gain enhancement of the radiation pattern and the resonant frequency shift toward lower frequency. The retrieval technique used show that the constitutive parameters of the unit cell as CLL have a zero index metamaterial (ZIM) from 1.34 to 1.49 GHz and a near zero index of refraction from 1.495 GHz to 2 GHz, which is within the operating frequency of the horn antenna. The achieved results show that the total gain is improved over the frequency range. The simulation and the measurement are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Characterization of horn antenna loaded with CLL unit cell

Lashab

Zebiri

Djouablia

et al. 2018

Micro & Optical Tech Letters

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“…The concept of artificial electromagnetic hard and soft surfaces or walls [1,2], that can be realized by corrugations with grooves filled with dielectric or by strips on a grounded dielectric layer, find important applications in design of conical horn antennas [3][4][5][6][7][8] and pyramidal horn antennas [9][10][11]. The studies of the hard and soft surfaces in [12] and [13] also show that they can support wave propagation along the grooves or strips and prohibit wave propagation across them.…”

Section: Introductionmentioning

confidence: 99%

A New Type of the Quasi-Tem Eigenmodes in a Rectangular Waveguide With One Corrugated Hard Wall

Skobelev¹,

Kildal²

2010

PIER

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Abstract-The problem of determining the eigenmodes of a rectangular waveguide with one hard wall formed by longitudinal corrugations with grooves filled with dielectric is considered. The characteristic equation is derived by using the asymptotic boundary conditions for corrugated surfaces. It is shown analytically that if the groove depth is equal to the value 0.25λ/(ε − 1) 1/2 corresponding to the hard wall condition, the TE eigenmode spectrum of the waveguide contains an infinite set of new non-uniform quasi-TEM modes with different transverse propagation constants in the empty part and identical longitudinal propagation constants equal to the wavenumber k. Analytical solution for the case of excitation of the waveguide by a specified source is given, and an example of forming local quasi-TEM waves is considered and discussed.

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“…Many numerical method have been applied to improve the accuracy such as the adaptive integral method [4][5] [6]. Circular horns have been always of great interest to designer for multi-beam use [7].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic scattering from Conical Horn analysis using wavelet-based moment method

Lashab

Benabdelaziz

Zebiri

2009

2009 Mediterrannean Microwave Symposium (MMS)

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In this paper Conical horn Antenna has been analyzed by two methods, the first one is an asymptotic one which is the aperture integration based on the geometrical optics (GO), the second one is a numerical method based on the well known moment method and improved by wavelets. In this work we intend first to introduce the application of wavelet in electromagnetic scattering, then a comparison of the two method of analysis is presented to show the limit of use of the asymptotic method and to emphasize on the fact that moment method is an exact method which is improved by the introduction of wavelet by reduction of both memory space and processing time, this is well presented and compared with different type wavelets.Index Terms-Moment Method, Wavelets, Horn antenna, Aperture integration.which is an asymptotic method, with the wavelet technique which is based on the moment method for future combination between these two methods, because for very large size structures, even very powerful methods may face the problem of memory space and computing time. Many work have been curried out using wavelet to solve electromagnetic problems the results are very promising [8][9][10] [11]. The conical horn antenna is excited at the mode TEll and the frequency of work is 12 GHz.The theoretical contents is expressed in the next section, which consists of three subsections, The first subsection is dedicated to the Aperture integration and problem description, the second subsection is about integral equation and Moment Method formulation, the last subsection is for orthogonal wavelet expansion and finally Numerical results. II. FORMULATION A. Moment Method Formulation A.l Integral equationThe current density is expressed by the tangential components, the fact that the antenna is a body of revolution, the current is expanded as follow:K(J(r» =~J(r)-nX 1J(r')XV'G(r, r').ds' (1) K(J(r)) = Ii X Hi (r)(2) +00 J(t, rp) = I [J t (t, rp).t + J 9' (t, rp).~lejv.9'The Conical Horn is studied in 2D as shown in figure 1, the surface of this latter is considered to be perfect conductor. Using the boundary condition, the scattered field may be written as an integral magnetic equation in two dimensions as [12].

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Analysis of conical quasi-TEM horn with a hard corrugated section

Cited by 28 publications

References 17 publications

Characterization of horn antenna loaded with CLL unit cell

Characterization of horn antenna loaded with CLL unit cell

A New Type of the Quasi-Tem Eigenmodes in a Rectangular Waveguide With One Corrugated Hard Wall

Electromagnetic scattering from Conical Horn analysis using wavelet-based moment method

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