Permittivity Determination Method for Multilayer Automotive Coatings for Radar Applications at 77 GHz

Christian Winter; Maximilian Korff; Tiziano Fabbri; Stefan Holzknecht; Ingo Weber; Erwin M. Biebl

doi:10.1109/TMTT.2022.3147479

Permittivity Determination Method for Multilayer Automotive Coatings for Radar Applications at 77 GHz

Christian Winter, Maximilian Korff, Tiziano Fabbri, Stefan Holzknecht, Ingo Weber, Erwin M. Biebl

Associate Professorship of Very High Frequency Technology

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8 Scopus citations

Abstract

For highly automated driving functions, up to ten radar sensors must be installed without affecting the vehicle design. This is only possible if they are placed behind painted bumpers. In order to understand the effects of automotive coatings on radar, it is crucial to determine the relative permittivity of each coating layer. A holistic approach to achieve high precision when determining the relative permittivities of multilayer automotive coatings for radars operating at 76-77 GHz is presented. The method is applied to two different types of measurement setups utilizing a vector network analyzer (VNA) with corrugated horn antennas and an all-in-one quasi-optical free-space measurement solution.

Original language	English
Pages (from-to)	2380-2388
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	70
Issue number	4
DOIs	https://doi.org/10.1109/TMTT.2022.3147479
State	Published - 1 Apr 2022

Keywords

Automotive coatings
radar transparency
relative permittivity

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10.1109/TMTT.2022.3147479

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title = "Permittivity Determination Method for Multilayer Automotive Coatings for Radar Applications at 77 GHz",

abstract = "For highly automated driving functions, up to ten radar sensors must be installed without affecting the vehicle design. This is only possible if they are placed behind painted bumpers. In order to understand the effects of automotive coatings on radar, it is crucial to determine the relative permittivity of each coating layer. A holistic approach to achieve high precision when determining the relative permittivities of multilayer automotive coatings for radars operating at 76-77 GHz is presented. The method is applied to two different types of measurement setups utilizing a vector network analyzer (VNA) with corrugated horn antennas and an all-in-one quasi-optical free-space measurement solution.",

keywords = "Automotive coatings, radar transparency, relative permittivity",

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AU - Winter, Christian

AU - Korff, Maximilian

AU - Fabbri, Tiziano

AU - Holzknecht, Stefan

AU - Weber, Ingo

AU - Biebl, Erwin M.

PY - 2022/4/1

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AB - For highly automated driving functions, up to ten radar sensors must be installed without affecting the vehicle design. This is only possible if they are placed behind painted bumpers. In order to understand the effects of automotive coatings on radar, it is crucial to determine the relative permittivity of each coating layer. A holistic approach to achieve high precision when determining the relative permittivities of multilayer automotive coatings for radars operating at 76-77 GHz is presented. The method is applied to two different types of measurement setups utilizing a vector network analyzer (VNA) with corrugated horn antennas and an all-in-one quasi-optical free-space measurement solution.

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KW - radar transparency

KW - relative permittivity

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Permittivity Determination Method for Multilayer Automotive Coatings for Radar Applications at 77 GHz

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