A5089872161- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Microwave Engineering and Waveguides
- Millimeter-Wave Propagation and Modeling
- Antenna Design and Optimization
- RFID technology advancements
- Advanced Photonic Communication Systems
- Energy Harvesting in Wireless Networks
- Advanced MIMO Systems Optimization
- Semiconductor Quantum Structures and Devices
- Optical and Acousto-Optic Technologies
- Photonic and Optical Devices
- Advanced Signal Processing Techniques
- Full-Duplex Wireless Communications
- Telecommunications and Broadcasting Technologies
Ericsson (Sweden)
2021-2024
Chalmers University of Technology
2021-2022
Eindhoven University of Technology
2020-2022
ORCID
2021
Aalto University
2016-2017
Nonlocal metasurface for perfect anomalous reflection demonstrates a new possibility controlling electromagnetic energy flow.
Diffractive optical components play a huge role in many applications, but they only work optimally when incident radiation hits them at specific preordained angle. A new concept known as multichannel metasurfaces, however, promises to control light coming and going from multiple directions the same time, opening up intriguing possibilities for range of novel devices.
Control of electromagnetic waves using engineered materials is very important in a wide range applications, therefore there always continuous need for new and more efficient solutions. Known natural artificial surfaces provide particular functionality the frequency they operate but cast "shadow" produce reflections at other frequencies. Here, we introduce concept multifunctional that possess different predetermined functionalities Such response can be accomplished by cascading metasurfaces...
A phased-array fed reflector antenna system is presented which can be used for mm-wave base station applications. The proposed designed to support massive-multi-input–multi-output (MIMO) scenarios within a wide coverage ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\pm 30^\circ $ </tex-math></inline-formula> ) in the azimuth plane and limited at elevation plane. design characterization methodology has...
This article introduces the FORMAT array, a reconfigurable millimeter-wave antenna array platform based on tiles. stands for Flexible Organization and Reconfiguration of Millimeter-wave Antenna Tiles, which is unique hardware solution aiming to implement demonstrate variety concepts, as well different architectures configurations from same basic module, providing even benchmark between solutions thus valuable insights into fifth-generation (5G) beyond-5G systems. The combination...
By controlling the surface reactance of impenetrable gradient metasurfaces it is possible to shape phase front reflected waves. This approach similar that used in conventional reflectarray antennas, where reflection from each array element properly tuned. However, such phase-gradient reflectors always produce some parasitic scattering into unwanted directions. Here we present our recent results on non-local (spatially dispersive) which do not have this drawback and demonstrate perfect...
In mobile communications, the research and development for fifth generation (5G) has gained significant interest in recent years. The high data rate requirements 5G introduce more challenges terms of system power consumption. Hence, considering base station, a efficient antenna is necessary order to provide higher signal noise ratios achieve required rates, while consuming lowest possible amount power. this paper phased array fed reflector proposed as solution stations. main idea use gain...
A design concept for a phased-array-fed reflector antenna system intended millimeter-wave base stations is presented. This motivated by the need efficient beamforming systems with reduced power consumption as compared to presently considered fully-populated large-scale MIMO arrays. The main idea use high-gain maximize effective isotropic radiated power. That in turn, allows minimizing number of active elements phased-array feed, and hence limit total supplied proposed based on torus which...
A new antenna system concept is presented where a wide-scan focal plane array used to achieve point-to-multipoint communication. The of parabolic toroid reflector populated with several arrays, the positions which determine directions beams. This investigated for beams pointed towards 0° (broadside) and 28° in azimuth. Each allows scanning an additional ±1° azimuth elevation. compensation twist sway mast. Several configurations are compared terms directivity scan loss such at E-band. It...
Lower efficiencies of power amplifiers and increased path loss at higher frequencies are two reasons why utilizing millimeter-wave for future wireless communications systems is challenging. In this paper, distinct antenna presented which address challenge by using high gain. This allows lower transmit levels, compared to conventional phased array antennas, while still providing effective isotropic radiated power.
The IoT's expansion calls for ultra-low power wireless systems. With 6G on the horizon, energy harvesting backscatter paves way improved efficiency and enhanced connectivity, without conventional batteries high-power radios. Despite licensed spectrum scarcity, telecom industry explores deploying backscattering technology in bands due to higher transmitter advanced interference management [1]. Past research RF harvesters emphasized enhancing rectifier sensitivity heavily duty-cycled...
Fixed-beam, high-gain antenna systems can be used for a finer partitioning of the currently cell-sectoring. This has benefit reducing number users seen per beam, which reduces interference. Furthermore, high gain allows effective isotropic radiated power while keeping transmit low. In this paper, we study performance such fixed-beam, system design millimeter-wave mobile communications. The is designed to keep inter-sector interference in multi-site scenario analyzed single- and multi-user...
In this talk, design and realization of a single-layer meta-transmitarray which provides certain functionality in narrow frequency band while remains reflectionless (transparent) elsewhere is presented. Realization such transmitarrays would allow integrating several metasurfaces cascade that performs different functionalities at frequencies, opening door for various new applications. We provide theoretical analysis alternative possible ways to realize transmitarrays. Moreover, the...
An antenna-system concept is explored where a wide-scan focal plane array antenna used for point-to-multipoint communications at E-band. As preliminary study the directivity investigated beam scanning to boresight several sizes and inter-element spacings azimuthal cuts are compared ETSI class-III radiation pattern envelope.