Analysis of High Intensity Radiated Field Coupling into Aircraft Using the Method of Moments

Schröder, Arne; Rasek, Guido A.; Brüns, Heinz-Dietrich; Řezníček, Zdeněk; Kucera, Jaromir; Loos, Steffen E.; Schuster, Christian

doi:10.1109/temc.2013.2278208

Cited by 25 publications

(7 citation statements)

References 27 publications

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“…Case Study of Evektor VUT 100 HIRF Transfer Functions 1) Background: During the HIRF-SE research project [4] on virtual assessment of an aircraft internal EM environment, a method of moments (MoM) model of the VUT 100 was established [5] and comparisons of numerical results to measurements were performed. The application of a suitable MoM tool and approach was described in [6] and is applied here.…”

Section: B Hirf Transfer Functions In Civil Aviationmentioning

confidence: 99%

HIRF Transfer Function Observations: Notes on Results Versus Requirements and Certification Approach

Rasek¹,

Schröder

Tobola

et al. 2015

IEEE Trans. Electromagn. Compat.

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HIRF transfer functions results are rarely available to the public. Generally, the data provided in applicable guidance material are used for estimation of internal HIRF environment in an air vehicle. An exemplary set of HIRF transfer functions for a small aircraft is presented here. Results for the aircraft (10.4-m wingspan and 8.3 m of length) are compared with regard to state of the art approaches applied for aircraft HIRF certification campaigns. This is done in appropriate frequency ranges and by the use of applicable test methods with regard to requirements in place. For all major types of contemporary test methods, results are generated by measurement and numerical computer modeling. Principles of outcomes are discussed and compared to current practice in place. This concerns the shapes of the transfer functions on one hand and the order of magnitudes of obtained levels on the other hand. The obtained results show significant deviations from generic transfer functions currently applied in aircraft industry. The coupling to the interior of the aircraft observed here was higher than indicated by the applicable generic transfer functions. Numerical computer modeling is used here to verify the obtained outcomes by principle.Index Terms-Direct current injection (DCI), high intensity radiated fields (HIRF), low level direct drive (LLDD), low level swept current (LLSC), low level swept field (LLSF), method of moments (MoM).

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Section: B Hirf Transfer Functions In Civil Aviationmentioning

confidence: 99%

HIRF Transfer Function Observations: Notes on Results Versus Requirements and Certification Approach

Rasek¹,

Schröder

Tobola

et al. 2015

IEEE Trans. Electromagn. Compat.

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“…In the latter case, material varieties, uncontrolled parameters, and unintentional and unknown apertures need to be addressed. A discussion regarding the influence of these aspects on observables is outlined in [9].…”

Section: Classification Of the Challengementioning

confidence: 99%

“…All these tools have different modeling features and are run by various partners, the focal points being the whole geometrical and electrical description of the structure and the test setup and test procedure as in Section II. Due to electrically thick aluminum of the fuselage model, equal results were obtained for the deterministic codes when the aluminum structure was modeled as PEC [9].…”

Section: Applied Numerical Codesmentioning

confidence: 99%

HIRF Transfer Functions of a Fuselage Model: Measurements and Simulations

Rasek¹,

Pascual-Gil

Schröder

et al. 2014

IEEE Trans. Electromagn. Compat.

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An entire set of high-intensity radiated field transfer functions including the main types of contemporary test methods is presented. Consequently, the applied frequency range for this task expands over many decades, from the kilohertz range up to 40 GHz. A major aim is to demonstrate the application of numerical computer modeling for such a task. Results of measurements and various solvers are compared to each other. As the activity serves also for the validation of such applications, the scenario is investigated by the use of a fuselage model with limited complexity. Index Terms-Asymptotic, computational electromagnetics (CEM), direct current injection (DCI), finite-difference time domain (FDTD), high-intensity radiated fields (HIRF), low-level direct drive (LLDD), low-level swept current (LLSC), low-level swept field (LLSF), method of moments (MoM), power balance (PWB).

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“…[1][2][3][4][5] Especially for most sensitive components in optoelectronic systems, the wideband high-intensity radiated fields (HIRF) can be coupled into electronic equipment through optical windows due to their lack of electromagnetic reinforcement, resulting in detrimental influences on the stability and security of entire systems. [6,7] It is becoming increasingly difficult to ignore the corresponding EMI problem for optoelectronic systems.…”

mentioning

confidence: 99%

Shorted Micro‐Waveguide Array for High Optical Transparency and Superior Electromagnetic Shielding in Ultra‐Wideband Frequency Spectrum

Liang

Huang

Pan

et al. 2023

Adv Materials Technologies

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While functional materials with both light transmitting and electromagnetic shielding are highly desirable and have made rapid advancements, only very few of them meet the stringent electromagnetic interference (EMI) shielding criteria for optoelectronic systems. Achieving high optical transparency and superior EMI shielding in a broad frequency spectrum is a remaining challenge in both academic and industrial areas. Herein, a design strategy of shorted micro‐waveguides (SMWs) array to decouple the light transmission and EMI shielding is proposed and experimentally demonstrated. The array of SMWs, consisting of cutoff metallic micro‐waveguides and shorting indium tin oxide (ITO) continuous conductive film, exhibits high optical transmittance of 90.4% and superior EMI shielding effectiveness of 60.8 dB on average over ultra‐wide frequency spectrum (0.2–1.3 GHz & 1.7–18 GHz). Compared to previously reported works, an improvement of 17 dB in average shielding effectiveness is achieved under the same level of light transmission, and the shielding frequency spectrum is significantly expanded. The working principle is explained in depth and factors influencing the performance are investigated for design optimization. These outstanding properties enable the transparent shielding material based on SMWs to excel in future applications of EMI shielding for optoelectronic systems.

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Analysis of High Intensity Radiated Field Coupling into Aircraft Using the Method of Moments

Cited by 25 publications

References 27 publications

HIRF Transfer Function Observations: Notes on Results Versus Requirements and Certification Approach

HIRF Transfer Function Observations: Notes on Results Versus Requirements and Certification Approach

HIRF Transfer Functions of a Fuselage Model: Measurements and Simulations

Shorted Micro‐Waveguide Array for High Optical Transparency and Superior Electromagnetic Shielding in Ultra‐Wideband Frequency Spectrum

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