Searched for: subject%3A%22Millimeter%255C-wave%22
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Hersyandika, Rizqi (author), Wang, Q. (author), Pollin, Sofie (author)
We exploit a dense cell-free mmWave network where User Equipments (UEs) are served by multiple highly directional beams provided by multiple Base Stations (BSs) simultaneously. Such multi-beam scenarios can either offer high spectral efficiency when different information is transmitted through each beam or a diversity gain when each beam...
conference paper 2021
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Kumari, Preeti (author), Myers, N.J. (author), Heath, Robert W. (author)
Millimeter-wave (mmWave) joint communication-radar (JCR) will enable high data rate communication and high-resolution radar sensing for applications such as autonomous driving. Prior JCR systems that are based on the mmWave communications hardware, however, suffer from a limited angular field-of-view and low estimation accuracy for radars due...
journal article 2021
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Zhang, H. (author), Bosma, S. (author), Neto, A. (author), Llombart, Nuria (author)
A dual-polarized 4 x 4 scanning phased array antenna with leaky-wave enhanced lenses operating at 28 GHz is presented. Such an antenna can be used for point-to-point fifth-generation (5G) communications that require high gain, wide bandwidth (BW), and limited steering ranges. The proposed array has a periodicity of two wavelengths, and the...
journal article 2021
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Pallotta, Luca (author), Cauli, Michela (author), Clemente, Carmine (author), Fioranelli, F. (author), Giunta, Gaetano (author), Farina, Alfonso (author)
In this paper a method capable of automatically classify radar signals of human hand-gestures exploiting the micro-Doppler signature is designed. In particular, the methodology focuses on the extraction of the Chebyshev moments from the cadence velocity diagram (CVD) of each recorded signal. The algorithm benefits from interesting properties of...
conference paper 2021
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Ramsey, Caitlin (author)
Neonates are among the most fragile in the human population. Even more so when born prematurely. Their loss of development time in the womb disrupts their growth, and the neonatal intensive care unit environment can add multiple stresses that hinder their development. This can partly be attributed to the intrusive environment of a neonatal...
master thesis 2020
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van 't Hof, Jos (author)
Commercial interest for millimeter-wave wireless communication has increased significantly over the past years due to the appearance of large volume applications such as automotive radar and telecom applications, i.e. as 5G systems operating in the FR2 band, ISM applications in the 60 GHz E-band, and beyond 100 GHz in the W-band and D-band....
master thesis 2020
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van Berkel, S.L. (author)
In the design of millimeter and sub-millimeter wave radiometric imaging systems a persistent goal is the increase in the speed of acquisition of the image while maintaining a high sensitivity. Typically, the highest sensitivity is achieved by cryogenically cooling the detectors, specifically in astronomical applications. However, for the purpose...
doctoral thesis 2020
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Huijten, E. (author)
Ultra-wideband submillimeter observations are crucial to study the process of star and galaxy formation and for characterizing cosmic dust in the interstellar medium. The Deep Spectroscopic High-redshift Mapper 2.0 (DESHIMA 2.0) will use an integrated superconducting spectrometer chip with a 220-440 GHz band coverage and a spectral resolution of...
bachelor thesis 2020
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Fromentèze, Thomas (author), Yurduseven, Okan (author), Berland, Fabien (author), Decroze, Cyril (author), Smith, David R. (author), Yarovoy, Alexander (author)
In this paper, we describe the recent development of new algorithms applied to short-range radar imaging. Facing the limitations of classical backpropagation algorithms, the use of techniques based on Fast Fourier Transforms has led to substantial image computation accelerations, especially for Multiple-Input Multiple-Output systems. The...
journal article 2020
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Huijten, Esmee (author), Roelvink, Yannick (author), Brackenhoff, Stefanie A. (author), Bakx, Tom J.L.C. (author), Zaalberg, Stan (author), Baselmans, J.J.A. (author), Karatsu, K. (author), van Hoven, M.B. (author), Endo, A. (author)
The next technological breakthrough in millimeter-submillimeter astronomy is 3D imaging spectrometry with wide instantaneous spectral bandwidths and wide fields of view. The total optimization of the focal-plane instrument, the telescope, the observing strategy, and the signal-processing software must enable efficient removal of foreground...
conference paper 2020
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Buijtendorp, B.T. (author), Bueno, J. (author), Thoen, David (author), Sberna, V. Murugesan P.M. (author), Baselmans, J.J.A. (author), Vollebregt, S. (author), Endo, A. (author)
Superconducting resonators used in millimeter-submillimeter astronomy would greatly benefit from deposited dielectrics with a small dielectric loss. We deposited hydrogenated amorphous silicon films using plasma-enhanced chemical vapor deposition, at substrate temperatures of 100°C, 250°C and 350°C. The measured void volume fraction, hydrogen...
conference paper 2020
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Galatro, L. (author)
As the number of wireless applications increases every year, overcrowding the RF/microwave spectrum, research community and industry are gradually starting to dedicate more attention to the less exploited (sub)millimeter wave spectrum, spanning from 30 GHz to 1 THz. While the high frequency and large available bandwidth of the latter promises...
doctoral thesis 2019
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Aslan, Y. (author), Puskely, J. (author), Roederer, A.G. (author), Yarovoy, Alexander (author)
The thermal and electromagnetic effects of varying the ground plane thickness and aperture size of the 5G integrated base station antennas are investigated. A double-sided PCB structure is designed with antennas and digital beamforming chips on the opposite sides. Fully-passive cooling is achieved by using fanless CPU coolers attached to the...
conference paper 2019
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Salman, Salman (author), Aslan, Y. (author), Puskely, J. (author), Roederer, A.G. (author), Yarovoy, Alexander (author)
This paper presents a 5G downlink system model for a hybrid multi-user beamforming technique at the base station. The presented technique employs power flux equalization in the elevation plane using a fixed analog cosecant-shaped beam and digital beamforming in the azimuth plane. The system performances of various beamforming algorithms are...
conference paper 2019
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Liu, Changjiang (author), Li, Y. (author), Ao, Dongyang (author), Tian, Haiyan (author)
Radar sensors offer several advantages over optical sensors in the gesture recognition for remote control of electronic devices. In this paper, we investigate the feasibility of human gesture recognition using the spectra of radar measurement parameters. With the combination of radar theory and classification methods, we found that the...
journal article 2019
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Aslan, Y. (author), Kiper, Caner Ekin (author), Biggelaar, Antonius Johannes (author), Johannsen, Ulf (author), Yarovoy, Alexander (author)
The challenge of cooling in mm-wave chipintegrated base station antenna arrays is addressed. Several approaches in thermal modeling of electronics are revisited and discussed. The two-resistor compact thermal model is applied to predict the junction temperatures of the beamformer chips. Thermal simulations are performed for two fabricated arrays...
conference paper 2019
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Fromenteze, Thomas (author), Yurduseven, Okan (author), Berland, Fabien (author), Decroze, Cyril (author), Smith, David R. (author), Yarovoy, Alexander (author)
The growing need for high-performance imaging tools for terrorist threat detection and medical diagnosis has led to the development of new active architectures in the microwave and millimeter range. Notably, multiple-input multiple-output systems can meet the resolution constraints imposed by these applications by creating large, synthetic...
journal article 2019
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Aslan, Y. (author), Puskely, J. (author), Janssen, J. H. J. (author), Geurts, Marcel (author), Roederer, A.G. (author), Yarovoy, Alexander (author)
Heat removal capabilities and radiation performances of several sparse antenna array topologies are studied for cooling enhancement in 5G millimeter-wave base station antennas. Both electromagnetic and thermal aspects are jointly considered for the first time in array layout optimization and a novel connection between layout sparsity and thermal...
journal article 2018
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Galatro, L. (author), Spirito, M. (author)
In this paper, we propose a method based on 3-D electromagnetic simulations, for the characteristic impedance extraction of transmission lines employed in TRL calibration, focusing on lines integrated in silicon technologies. The accuracy achieved with TRL calibrations using the proposed characteristic impedance extraction is benchmarked...
journal article 2017
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Gentile, G. (author)
doctoral thesis 2016
Searched for: subject%3A%22Millimeter%255C-wave%22
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