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Your search keyword '"Reniers, A. C. F."' showing total 38 results
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38 results on '"Reniers, A. C. F."'

3. Photonic Angle-of-arrival Measurement of a Microwave Signal with Range Selectivity and SNR Enhancement

Author

Cao, Z., Lu, R., Wang, Q., Reniers, A. C. F., Boom, H. P. A. van den, Tangdiongga, E., and Koonen, A. M. J.

Subjects
Physics - Optics
Abstract

A novel parallel optical delay detector (PODD) is proposed for angle-of-arrival (AOA) measurement of a microwave signal with selective measurement range and signal-to-noise (SNR) enhancement. The PODD is experimentally demonstrated by using a dual parallel Mach-Zehnder modulator. The noise robustness enhancement is experimentally investigated. Based on the proposed PODD, the measurement error for the full range can be less than 0.02 radian (0.71% of full measured range).

Published
2013

7. Atmospheric Attenuation in a mmWave Reverberation Chamber

Author

Hubrechsen, Anouk, Bronckers, Laurens A., Reniers, Ad C. F., and Smolders, A. Bart

Abstract

This letter describes the effects of atmospheric attenuation on reverberation-chamber measurements in the mmWave range. It is evaluated using chamber-decay time, as the atmospheric attenuation is also defined as the rate of decay. We describe a method to de-embed atmospheric attenuation to evaluate for which cases it has a measurable impact and show results from 50 to 140 GHz, including uncertainty. We report a measurable impact in the used chamber when the attenuation is approximately 2 dB/km. We report this effect to show that the chamber loss can be dominated by atmospheric attenuation at higher frequencies. This can lead to increased measurement uncertainty or can make reverberation-chamber measurements highly impractical in a similar setting. With a climate-controlled environment, this can potentially be overcome.

Published
2024
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8. A Reverberation Chamber for Antenna Measurements up to 140 GHz

Author

Hubrechsen, Anouk, Bronckers, Laurens A., Verwer, Steven J., Reniers, Ad C. F., and Smolders, A. Bart

Abstract

In this article, we design and verify a millimeter-wave (mmWave) reverberation chamber (RC) operating in the 24–140-GHz band. The chamber is designed to facilitate over-the-air measurements of next-generation integrated antennas operating at high frequencies. For such systems, it is important to perform fast and accurate measurements of the radiated or received power over a wide frequency range. The reproducibility of our proposed chamber configuration is on average over the frequency band better than 0.2 dB when using the minimum advised number of mode-stirring samples. The chamber loss does not exceed 42 dB, and the chamber-decay time remains approximately $0.3 \mu \text{s}$ across the frequency range, indicating that the chamber would likely remain operational above 140 GHz. As an example of the performance of the chamber, we show that antenna-efficiency measurements can be performed within only a few percent expanded uncertainty.

Published
2024
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14. Pushing the Boundaries of Antenna-Efficiency Measurements towards 6G in a mm-Wave Reverberation Chamber

Author

Anouk Hubrechsen, Steven J. Verwer, Reniers Ad C. F., Laurens A. Bronckers, A. Bart Smolders, Electromagnetics, Electrical Energy Systems, Center for Wireless Technology Eindhoven, Electrical Engineering, Center for Astronomical Instrumentation, EAISI High Tech Systems, EM Antenna Systems Lab, EM-Metrology Lab, and Center for Care & Cure Technology Eindhoven

Subjects
mmWave, Chamber Loss, Antenna Efficiency, Reverberation Chamber, Wireless Testing
Abstract

With 6G around the corner, the push for higher-frequency over-the-air testing of antennas is inevitable, where antenna efficiency is one of the key performance metrics. Reverberation chambers can be an ideal tool for performing antenna-efficiency measurements at mm-Wave frequencies, due to its flexibility in placement, and ability to perform rapid and repeatable measurements. However, to the authors’ best knowledge, no work on antenna efficiency above 47 GHz has been published so far. In this work, we show for the first time results of antenna efficiency using the two-antenna method up to 60 GHz, by using a novel mm-Wave reverberation chamber. We also evaluate chamber loss where we predict that larger systems, such as phased-array systems, can be measured inside this chamber as well, and that the current operational frequency range can be extended much further than 60 GHz for antenna-efficiency measurements.

Published
2022
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18. Air-filled Substrate-Integrated Waveguide Technology for Broadband and Highly-Efficient Photonic-Enabled Antenna Systems

Author

Lemey, Sam, primary, Caytan, Olivier, additional, Brande, Quinten Van den, additional, Paula, Igor Lima de, additional, Bogaert, Laurens, additional, Li, Haolin, additional, Kerrebrouck, Joris Van, additional, Reniers, Ad C. F., additional, Smolders, Bart, additional, Bauwelinck, Johan, additional, Demeester, Piet, additional, Torfs, Guy, additional, Ginste, Dries Vande, additional, Verstuyft, Steven, additional, Kuyken, Bart, additional, and Rogier, Hendrik, additional

Published
2020
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19. A Hybrid Integration Strategy for Compact, Broadband, and Highly Efficient Millimeter-Wave On-Chip Antennas

Author

Van den Brande, Quinten, primary, Reniers, Ad C. F., additional, Smolders, Bart, additional, Kuyken, Bart, additional, Ginste, Dries Vande, additional, Rogier, Hendrik, additional, Lemey, Sam, additional, Cuyvers, Stijn, additional, Poelman, Stijn, additional, De Brabander, Lars, additional, Caytan, Olivier, additional, Bogaert, Laurens, additional, Paula, Igor Lima De, additional, and Verstuyft, Steven, additional

Published
2019
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37. Measurements corner: Causes of discrepancies between measurements and EM simulations of millimeter-wave antennas.

Author

Fischer, Brian E., LaHaie, Ivan J., Huang, M. D., Herben, M. H. A. J., Reniers, A. C. F., and Smulders, P. F. M.

Subjects
PERMITTIVITY measurement, MILLIMETER wave antenna arrays, POLYMER liquid crystals, MICROSTRIP resonators, MEASUREMENT errors
Abstract

This article describes the possible factors that can introduce discrepancies between measurements and three-dimensional EM simulations of millimeter-wave (mm-wave) antennas. The effects of the choice of the simulation solver, the relative permittivity and the homogeneity of the substrate material, the manufacturing tolerance, and the measurement errors are discussed. It is concluded that a fair comparison between measurements and simulations of mm-wave antennas can only be made if all these possible causes of discrepancies are taken into account. [ABSTRACT FROM AUTHOR]

Published
2013
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