Accurate analysis of TEM horn antennas for pulse radiation

Shlager, K.L.; Smith, G.S.; Maloney, J.G.

doi:10.1109/15.536071

Cited by 81 publications

(44 citation statements)

References 20 publications

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“…Although the analysis presented in this paper is done in two dimensions, the results are consistent with those seen in the study of three-dimensional (3-D) horn antennas [14]. The material presented here is, in fact, a continuation of the work 0018-926X/97$10.00 © 1997 IEEE presented in [14,Appendix] that was itself used to determine accurate discretizations for 3-D horns.…”

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confidence: 74%

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FDTD simulations of TEM horns and the implications for staircased representations

Schneider

Shlager

1997

IEEE Trans. Antennas Propagat.

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Abstract-Two-dimensional (2-D) TEM horns are modeled using the finite-difference time-domain (FDTD) method. The boundary walls are perfect electric conductors and one wall, which does not align with the Cartesian grid, is approximated using a staircased representation. By carefully comparing the FDTD results to those of the analytic solution, one can make conclusions about the coarseness with which a boundary can be represented. It is found that staircasing errors are small when the staircase diagonal (the hypotenuse of the right triangle created by the stairstep) is smaller than half a wavelength at the highest significant frequency in the excitation. This rule-of-thumb is put forward as a necessary condition for the discretization of general problems. Results are also provided for some simple FDTD schemes that are designed to reduce staircasing errors. By using large aspect-ratio cells, a grid can be constructed that satisfies the rule-of-thumb given above. While this approach eliminates general staircasing errors, some errors persist owing to the presence of step discontinuities immediately adjacent to the horn feed. These errors can be further reduced by using a cell-splitting approach. It is shown that the contour path FDTD technique can be used to eliminate nearly all staircasing errors, while some additional improvement is shown to be provided by using a stabilized contour path FDTD approach. Finally, a recently proposed conformal technique that permits simple implementation is shown to provide results comparable with those of the stabilized contour path approach.Index Terms-FDTD methods, horn antennas.

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confidence: 74%

“…The material presented here is, in fact, a continuation of the work 0018-926X/97$10.00 © 1997 IEEE presented in [14,Appendix] that was itself used to determine accurate discretizations for 3-D horns.…”

mentioning

confidence: 99%

FDTD simulations of TEM horns and the implications for staircased representations

Schneider

Shlager

1997

IEEE Trans. Antennas Propagat.

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“…Many kinds of UWB antennas have been introduced such as bow-tie, conical, TEM horn, spiral, fractal, log-periodic and Dragonfly antennas [1][2][3][4][5][6][7]. Owning the suitable design, these antennas show good impedance stability over the large frequency range.…”

Section: Introductionmentioning

confidence: 99%

Complete Dispersion Analysis of Vivaldi Antenna for Ultra Wideband Applications

Mehdipour¹,

Mohammadpour‐Aghdam²,

Faraji‐Dana³

2007

PIER

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Abstract-Besides the return loss and radiation pattern, dispersion characteristic of the antenna is one of the most important factors which should be considered in ultra wideband applications. In this paper, dispersion behavior of two specific Vivaldi antennas has been fully investigated in both frequency and time domains. All simulations are carried out by CST MS software. Moreover, by fabricating the antennas, the simulation results are verified by experimental data.

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“…Typical applications for these antennas include EMC experiments, Ground Penetrating Radar (GPR), Free-space Time-Domain (FTD) measurement systems, and feeds for reflectors [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Modified Tem Horn Antenna for Broadband Applications

Mallahzadeh¹,

Karshenas²

2009

PIER

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Abstract-This paper presents a novel method to enhance the pattern characteristics of the TEM horn antenna for 2-14 GHz frequency band. The conventional TEM horn antenna introduces some fluctuations in the main lobe radiation pattern over the higher frequencies, i.e., 10-14 GHz. This motivated us to propose a new method to remove the aforementioned impact by carving an arc shape to the open end of exponentially tapered plates. The associated curvature of this arc is optimized to completely remove the fluctuation. The measurement results show that the improved TEM horn antenna structure exhibits low VSWR as well as radiation pattern over 2-14 GHz frequency band.

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Accurate analysis of TEM horn antennas for pulse radiation

Cited by 81 publications

References 20 publications

FDTD simulations of TEM horns and the implications for staircased representations

FDTD simulations of TEM horns and the implications for staircased representations

Complete Dispersion Analysis of Vivaldi Antenna for Ultra Wideband Applications

Modified Tem Horn Antenna for Broadband Applications

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