Near-field radiation characteristics of shaped electrically large apertures in the spatial and angular domains

Quan, Shaohui; Liu, Q.

doi:10.1049/iet-map.2009.0423

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…where θ i is the radiation angle of the dipole. Then, the induced current density over the surface of the paraboloid is calculated by (3), and the scattered fields are calculated by (4). In this paper, the frequency ranges of the model are from 200 MHz to 5.5 GHz, in which most electronic devices are more vulnerable to be upset or damaged [1].…”

Section: Numerical Resultsmentioning

confidence: 99%

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Modelling of a paraboloid antenna for receiving and its equivalent circuit

Gao

2014

IET Microwaves, Antennas & Propagation

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This study presents a SPICE model of a paraboloid antenna for receiving. The proposed model is converted from a receiving model based on the Thévenin's theorem and the reciprocity theory through rational approximation. The model gives the coupling voltages on the antenna load when the antenna is illuminated by plane waves. This model can be used in both frequency‐domain and time‐domain analyses, and can be a part of a system‐level model for electromagnetic compatibility simulation in circuit solvers. The proposed model has been verified by several examples.

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Section: Numerical Resultsmentioning

confidence: 99%

“…Generally, EMPs can penetrate into electronic devices through front-door coupling or back-door coupling [1]. Many studies have dealt with back-door coupling in terms of cables [2,3] and apertures [4,5]. As for front-door coupling, most of the efforts have been made on the input impedance of an antenna [6,7].…”

Section: Introductionmentioning

confidence: 99%

Modelling of a paraboloid antenna for receiving and its equivalent circuit

Gao

2014

IET Microwaves, Antennas & Propagation

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“…When solving linear equations of (8) and (12), one can find that both equations are similar. The only difference is the voltage sources between…”

Section: Receiving Equivalent Modelmentioning

confidence: 99%

“…Moreover, a simulation program with integrated circuit emphasis (SPICE) model for predicting electromagnetic emissions from an antenna is studied in [6]. As for the electromagnetic couplings, EMPs can penetrate into electric systems through back-door couplings and front-door couplings, many models are established to predict those coupling phenomena such as transmission lines models [7][8][9][10][11], apertures models [12,13]a n d antennas models [14][15][16]. Though electromagnetic emissions and couplings can be predicted by commercial full-wave simulators accurately, the increasing complexity of an electronic system makes the simulation quite time-consuming.…”

Section: Introductionmentioning

confidence: 99%

SPICE models of a multi‐antenna system for transmitting and receiving

Gao

2016

IET Circuits, Devices & Systems

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In this study, SPICE models of a multi-antenna system for transmitting and receiving are proposed. The radiation fields at a given direction can be predicted by the transmitting SPICE model when the system is excited by a set of excitation sources. The receiving SPICE model can be used to calculate the coupling voltages on each antenna's load when the antenna system is illuminated by plane waves. The proposed modelling method for transmitting and receiving is a three-step approach. In the first step, the radiation properties of the system are characterized by a minimal number of linearly independent radiation fields. Then, the transmitting and receiving equivalent models are established based on the radiation properties of the system. Finally, the equivalent models are approximated by rational functions and converted to SPICE models. Once these models have been established, the characteristic properties of the excitation signals can be changed arbitrarily without re-establishing the models. Besides, both models can be incorporated with any terminations. The proposed SPICE models have been validated by a commercial full-wave simulator. The feature selective validation method is used to quantify the models' results. Experiments are also conducted to validate the models.

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“…It has been demonstrated that different observation regions in will lead to different angular spectrums [21]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 97%

Compact Range Performance Evaluation Using Aperture Near-Field Angular Spectrums

Quan

2013

IEEE Trans. Antennas Propagat.

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For a compact range (CR), the near-field angular spectrum can be obtained by making an inverse Fourier transform of its aperture spatial near field. The characteristics of the aperture design have been carried by the aperture near-field angular spectrum. The direct wave and edge-diffracted waves from the aperture can be separated and distinguished clearly in the angular domain. Therefore, the CR performance can be evaluated and improved accordingly. In this paper, based on the aperture field convolution method and plane wave spectrum (PWS) theory, near-field angular spectrums for different apertures have been computed. The general criteria for the CR aperture design have been discussed. The selections of the whole aperture shape, the serration height, the serration base length, the serration number, and the serration shape (including isosceles and right-angled triangles) have been compared. At last, the near fields of an optimized serrated-edge aperture and an original circular aperture in different transverse planes have been computed and compared. The width and height of the apertures are all 30 wavelengths in free space. In order to suppress the sidelobes, a Chebyshev window with dB sidelobes has been adopted in the spatial-angular transform.Index Terms-Aperture antennas, compact range (CR), convolution, near fields, plane wave spectrum (PWS), spectrum analysis.

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Near-field radiation characteristics of shaped electrically large apertures in the spatial and angular domains

Cited by 6 publications

References 15 publications

Modelling of a paraboloid antenna for receiving and its equivalent circuit

Modelling of a paraboloid antenna for receiving and its equivalent circuit

SPICE models of a multi‐antenna system for transmitting and receiving

Compact Range Performance Evaluation Using Aperture Near-Field Angular Spectrums

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