Andrés Alayón Glazunov

Andrés Alayón Glazunov
University of Twente | UT · Department of Electrical Engineering

PhD, Docent
Leads research on the Design and Characterization of Intelligent Devices and Environments for Communications and Sensing

About

163
Publications
22,880
Reads
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1,227
Citations
Citations since 2016
103 Research Items
830 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
Andrés Alayón Glazunov was born in Havana, Cuba. He received the M.Sc. (Engineer-Researcher) degree in physical engineering from Peter the Great St. Petersburg Polytechnic University (Polytech), St. Petersburg, Russia, in 1994, the Ph.D. degree in electrical engineering from Lund University, Lund Sweden, in 2009, and the Docent (Habilitation) qualification in antenna systems from Chalmers University of Technology, Gothenburg, Sweden, in 2017. From 1996-2005, he held various research and specialist positions in the Telecom industry, e.g., Ericsson Research, Telia Research, and TeliaSonera, in Stockholm, Sweden. From 2001-2005, he was the Swedish delegate to the European Cost Action 273 and from 2018-2020 he was the Dutch delegate to the European Cost Action IRACON. He has been one of the pioneers in producing the first standardized OTA measurement techniques for 3GPP, and devising novel OTA techniques, e.g., the Random-LOS and the Hybrid antenna characterization setups. He has contributed to or initiated various European research projects, e.g., more recently, the is3DMIMO, the WAVECOMBE and the Build-Wise projects under the auspices of the H2020 European Research and Innovation program. Dr. Glazunov has also contributed to the international 3GPP and the ITU standardization bodies. From 2009-2010, he held a Marie Curie Senior Research Fellowship at the Centre for Wireless Network Design, University of Bedfordshire, Luton, the U.K. From 2010-2014, he held a post-doctoral position with the Electromagnetic Engineering Laboratory, KTH-Royal Institute of Technology, Stockholm, Sweden. From 2014-2018, he held an Assistant Professor position at Chalmers University of Technology, Gothenburg, Sweden. Dr. Glazunov is currently an Associate Professor with the Department of Electrical Engineering, University of Twente, Enschede, the Netherlands, where he is leading the Radio, Propagation and Antenna Systems research. And he is also an Affiliate Professor with the Chalmers University of Technology, Gothenburg, Sweden, where he is leading the OTA Characterization of Antenna Systems research area. He is the author of more than a hundred scientific and technical publications. He is the co-author and co-editor of the textbook LTE-Advanced and Next Generation Wireless Networks – Channel Modelling and Propagation (Wiley, 2012). His current research interests include, but are not limited to mmWave array antenna design, MIMO antenna systems, electromagnetic theory, fundamental limitations on antenna-channel interactions, radio propagation channel measurements, modeling and simulations, wireless performance in the built environment, and the OTA characterization of antenna systems and wireless devices.
Additional affiliations
May 2018 - present
Chalmers University of Technology
Position
  • Professor
February 2018 - present
University of Twente
Position
  • Professor (Associate)
October 2014 - January 2018
Chalmers University of Technology
Position
  • Professor (Assistant)
Education
July 2006 - March 2009
Lund University
Field of study
  • Antennas, Propagation and Channels
September 1988 - February 1994
Peter the Great St.Petersburg Polytechnic University
Field of study
  • Physical Electronics, Physics of Active Media

Publications

Publications (163)
Preprint
p>Electromagnetic compatibility (EMC) measurements and over-the-air (OTA) testing are widely performed in classical reverberation chambers. A less-known reverberation chamber, yet a rather efficient environment for generating multipath conditions, is the Vibrating Intrinsic Reverberation Chamber (VIRC), which is yet to be fully characterized. There...
Preprint
p>A high equivalent isotropic radiated power (EIRP) active phased array antenna system has been designed and experimentally verified at the 28 GHz band. The phased array employs Gallium Nitride (GaN) based radio frequency front-ends with 31 dBm output power in transmit mode and 3.5 dB noise figure in receive mode. A fully metallic gapwaveguide tech...
Preprint
p>A high equivalent isotropic radiated power (EIRP) active phased array antenna system has been designed and experimentally verified at the 28 GHz band. The phased array employs Gallium Nitride (GaN) based radio frequency front-ends with 31 dBm output power in transmit mode and 3.5 dB noise figure in receive mode. A fully metallic gapwaveguide tech...
Preprint
p>A high equivalent isotropic radiated power (EIRP) active phased array antenna is proposed for 5G communication systems at 28 GHz. The numerical design, the measurements of a fabricated prototype and the performance analysis are presented. The antenna design is based on the gapwaveguide technology and consists of 16 × 16 single 45-degree slant-pol...
Preprint
p>A high equivalent isotropic radiated power (EIRP) active phased array antenna is proposed for 5G communication systems at 28 GHz. The numerical design, the measurements of a fabricated prototype and the performance analysis are presented. The antenna design is based on the gapwaveguide technology and consists of 16 × 16 single 45-degree slant-pol...
Preprint
Full-text available
p>Fully Metallic Gap Waveguide Based Bandpass Frequency Selective Surface Radome for Fixed Beam Array Antenna at mmWave Band</p
Preprint
p>Fully Metallic Gap Waveguide Based Bandpass Frequency Selective Surface Radome for Fixed Beam Array Antenna at mmWave Band</p
Preprint
p>Electromagnetic compatibility (EMC) measurements and over-the-air (OTA) testing are widely performed in classical reverberation chambers. A less-known reverberation chamber, yet a rather efficient environment for generating multipath conditions, is the Vibrating Intrinsic Reverberation Chamber (VIRC), which is yet to be fully characterized. There...
Preprint
Accpted for publication in IEEE T-EMC as of 15/10/2022. Abstract—In recent years, promising results have been reported with the Vibrating Intrinsic Reverberation Chamber (VIRC) combining performance and cost-efficiency for electromagnetic compatibility (EMC) measurements. This also makes it a potentially-attractive solution for over-the-air (OTA)...
Article
This paper investigates practical implementation aspects of a novel hybrid chamber concept that has been recently introduced for over-the-air testing of wireless devices. The chamber allows to synthesize a spectrum of plane waves (PWs) incident on a device under test from a wide range of angles-of-arrival (AoAs) through exploiting multiple field sc...
Article
Full-text available
Machine learning is a promising technique for angle-of-arrival (AOA) estimation of waves impinging a sensor array. However, the majority of the methods proposed so far only consider a known, fixed number of impinging waves, i.e., a fixed number of sources (NOS). This paper proposes a machine-learning-based estimator designed for the case when the N...
Article
Full-text available
This paper presents a bandpass frequency selective surface (FSS) radome based on fully metallic gap waveguide (GW) technology. The element of the proposed FSS radome consists of a conventional cross-dipole slot etched on metallic plates and positioned over a groove GW cavity. A design with a single GW cavity layer was initially produced which was l...
Preprint
Full-text available
Machine learning is a promising technique for angle-of-arrival (AOA) estimation of waves impinging a sensor array. However, the majority of the methods proposed so far only consider a known, fixed number of impinging waves, i.e., a fixed source number. This paper proposes a machine-learning-based estimator designed for the case when the source numb...
Article
Over 80 percent of wireless traffic already takes place in buildings. Like water, gas, and electricity, wireless communication is becoming one of the most fundamental utilities of a building. It is well known that building structures have a significant impact on in-building wireless networks. If we seek to achieve the optimal network performance in...
Preprint
Over 80% of wireless traffic already takes place in buildings. Like water, gas, and electricity, wireless communication is becoming one of the most fundamental utilities of a building. It is well known that building structures have a significant impact on in-building wireless networks. If we seek to achieve the optimal network performance indoors,...
Conference Paper
Full-text available
Channel hardening is one of the key properties of massive MIMO systems. Cell-free array antenna topology is one of the three typical massive MIMO array antenna topologies. In this paper, channel hardening in mm-Wave is investigated based on ray tracing simulations. Cell-free array antenna topology are evaluated in two different radio wave propagati...
Article
Over-the-air (OTA) measurement techniques have, and will continue to have, a key role in evaluating the performance of modern antennas and wireless devices. The new random line-of-sight (random-LOS) measurement setup offers the evaluation of the OTA performance of different types of devices, for example, car antennas and small wireless devices in t...
Article
This paper presents a part of our ground-breaking work on evaluation of buildings in terms of wireless friendliness at the building-design stage. The main goal is to devise building design practices that provide for a good performance of wireless networks deployed in buildings. In this paper, the interference gain (IG) and power gain (PG) are defin...
Article
A novel type of hybrid measurement facility comprising a chamber antenna array (CAA) inside an overmoded waveguide is proposed and analyzed numerically. The reflecting walls of the metal rectangular waveguide (WG) are used in conjunction with a CAA to synthesize obliquely incident plane wave (PW) fields at the device under test (DUT). This enables...
Article
Full-text available
The manufacturing industry is connecting people and equipment with new digital technologies, enabling a more continuous stream of data to represent processes. With more things connected, the interest in a connectivity solution that can support communication with high reliability and availability will increase. The fifth generation of telecommunicat...
Article
We develop a systematic methodology to experimentally investigate the impact of interference from a non-listen-before-talk ultra-narrowband (UNB) signaling technique on Wi-Fi links. The methodology is based on a worst-case interference scenario, and consists of three investigating steps. This methodology is then applied to a measurement setup to pr...
Article
Full-text available
The analysis of the performance of 5G wireless communication systems employing Massive‐MIMO at millimeter‐wave frequencies is of great practical relevance. Of special relevance are the signal fluctuations. In the present paper, we introduce a semi‐analytical model for a generic scattering environment by using randomly distributed resonant scatterer...
Conference Paper
Full-text available
Spatial channel hardening is one of the key properties of a massive MIMO system. In this paper, we investigate the spatial channel hardening based on ray tracing channel simulations with different array antenna topologies deployed in different radio wave propagation conditions. Investigated are 9 different indoor deployment scenarios of massive MIM...
Article
Full-text available
A bandwidth-enhanced 8 8 cavity-backed slot array antenna for fixed beam applications is presented. The antenna consists of four 2 2 subarrays fed by ridge gap waveguide and a modified bow-tie coupling slot in the cavity layer. The proposed bow-tie coupling slot provides an additional 10 % impedance bandwidth as compared to the traditional rectangu...
Article
The performance evaluation of wireless systems is crucial for the development of future systems with more connected devices. It is essential to have an easy and relevant method for ensuring the wireless communication performance of the devices. We have recently developed a new random line-of-sight (random-LOS) measurement system for evaluating the...
Preprint
Full-text available
This paper presents a part of our ground-breaking work on evaluation of buildings in terms of wireless friendliness in the building-design stage. The main goal is to devise construction practices that provide for a good performance of wireless networks deployed in buildings. In this paper, the interference gain (IG) and power gain (PG) are defined...
Article
A three-dimensional (3D) analytical indoor line-of-sight (LOS) probability model is given in this letter. According to the indoor layout of a specific building, the proposed closed-form model can be used to compute the LOS probability in a 3D environment. The model is validated in both single rooms and a typical office building by Monte Carlo simul...
Article
In this paper, we present part of our ground-breaking work that bridges building design and wireless network deployment. The original contributions lie in: i) defining interference gain (IG) as an intrinsic figure of merit (FoM) of a building’s wireless performance in terms of interference signal blockage; ii) developing analytic models to calculat...
Article
Full-text available
Electromagnetic (EM) reflection properties of building materials and structures have been investigated through practical measurements. However, the finite thickness of measured materials makes it challenging to resolve the rays reflected from the front and the back surfaces. In this paper, we therefore present a three-step minimum least squares-bas...
Conference Paper
Full-text available
Analyzed are three criteria for the computation of a reference distance marking the start of the far-field region in antenna measurements. The analysis is based on a correction factor for the Friis formula at boresight in the Fresnel zone. Closed-form equations are obtained as a function of frequency, the gains of the transmit and receive antennas...
Conference Paper
Full-text available
This paper proposes a bandwidth-improved cavity-backed unit cell slot subarray antenna fed by a gap ridge waveguide for Line-of-Sight (LoS) 5G mmWave applications. The proposed subarray is comprised of three layers. The top layer is the antenna layer in a 2 × 2 slots configuration, the cavity layer is in the middle and the ridge gap waveguide feedi...
Article
A novel multi-band, dual-polarized, 28-port multiple-input multiple-output (MIMO) cube is presented. The cube structure enables dense placement of the antennas, whilst still allowing for low correlation between the individual antenna ports. The total size of the cube is roughly 2×2×7 λ30, where λ0 is the wavelength at the lowest used frequency. The...
Conference Paper
Full-text available
A ±45° dual-polarized antenna is designed based on the gap waveguide technology which offers a low loss and easy-to-manufacture solution at the mmWave frequencies. Dual-polarized antennas help to increase the capacity and coverage of a wireless system and also decrease the overall cost. Two parallel arrays of 8 slots each are employed to create the...
Article
Full-text available
A novel generalized polarization-space modulation (GPSM) is proposed for polarized multiple input multiple-output (MIMO) systems with a limit number of radio frequency (RF) chains. In the spatial domain, multiple dual-polarized (DP) transmit antennas are activated, and then combinations of those indices are used to convey information. While in the...
Article
A new ultra-wideband multimode antenna design that enables the detection/transmission of two orthogonal field components over a nearly hemispherical coverage area is presented. It integrates and co-locates two perpendicularly oriented bow-tie dipole elements, a short convex monopole and four horizontally oriented tapered slot antenna elements (form...
Conference Paper
Full-text available
This paper considers the design and evaluation of the performance of a low profile frequency selective surface (FSS) with flexible characteristics for X-band shielding applications. The proposed FSS unit cell is realized using a miniaturized ring loop (MRL) which is a transformed version of the conventional ring loop. The evaluation of the performa...
Conference Paper
Full-text available
This paper proposes a high gain grid array antenna (GAA) with enhanced bandwidth for 5G base station applications. The wideband GAA characteristics is achieved by loading the rhombus patch on the short radiating sides of the conventional GAA. By loading the rhombus on the short radiating sides of the conventional GAA, the additional capacitive reac...
Conference Paper
Full-text available
There is an increasing demand to develop advanced very large antenna systems, especially for the new 5G wireless networks. Over-The-Air (OTA) testing techniques need to meet the challenges arising from the large size and complexity of the massive multi-element array antennas. In the Random-LOS (Line-of-Sight) OTA measurement setup, a plane wave is...
Article
This paper evaluates the performances of channel emulation algorithms in multi-probe anechoic chamber (MPAC) by using plane wave (PW) and spherical vector wave (SVW) theories. Channel emulation in MPAC enables the over-the-air (OTA) testing of performances of wireless devices under realistic propagation scenarios, through setting excitation voltage...
Preprint
Full-text available
Three-dimensional (3D) multiple-input multiple-output (MIMO) channel sounder measurements of a multiuser MIMO channel at the 30-40 GHz mm-wave band are presented. 3D-MIMO downlink transmissions to two users is considered. The measurement campaign employing a vector network analyzer (VNA) has been performed in an office scenario. The mm-wave 3D-MIMO...
Article
Over-the-Air (OTA) measurement techniques are essential to verify the performance of antennas and wireless devices. The Random Line-of-Sight (Random-LOS) measurement setup offers the advantage to test the OTA performance of antennas mounted on cars in existing, or new, semi- and full-anechoic chambers. Hence, reusing currently available infrastruct...
Article
This letter demonstrates advantages of modeling the nonspecular wave scattering from surfaces of a multiple-input multiple-output (MIMO) channel in terms of the spherical vector wave (SVW) mode expansion. We propose the SVW mode coupling matrix M as a more efficient alternative to the commonly used set of distinct plane waves. M incorporates the sc...
Article
Full-text available
This paper presents a statistical modeling approach of the real-life user-induced randomness due to mobile phone orientations for different phone usage types. As well-known, the radiated performance of a wireless device depends on its orientation and position relative to the user. Therefore, realistic handset usage models will lead to more accurate...
Article
Full-text available
A new low-profile planar Eleven antenna is designed for optimal MIMO performance as a wideband MIMO antenna for micro base-stations in future wireless communication systems. The design objective has been to optimize both the reflection coefficient at the input port of the antenna and the 1-bitstream and 2-bitstream MIMO efficiency of the antenna at...
Article
Full-text available
The performance of 5G wireless communication systems, employing Massive-MIMO at millimeter-wave frequencies, is most likely measured only in Over-The-Air (OTA) setups. It is proposed to perform OTA measurements in two limiting environments of Rich Isotropic MultiPath (RIMP) and Random Line-of-Sight (Random-LOS) instead of a typical or representativ...
Article
In this paper, an 8×1 dual-polarized linear array antenna is proposed for a Random Line-of-Sight (Random-LOS) Over-The-Air (OTA) measurement system. The proposed array antenna operates over the frequency band of 1.6-2.7 GHz. A self-grounded bowtie is optimized as the array element. A compact wideband 2-port feeding network is designed and manufactu...
Article
Modern infrastructures are becoming increasingly dependent on electronic systems, leaving them more vulnerable to electrical surges or electromagnetic interference. Electromagnetic disturbances appear in nature, e.g., lightning and solar wind; however, they may also be generated by man-made technology to maliciously damage or disturb electronic equ...