Assessment of mmwave handset arrays in the presence of the user body
| Autor: | Lluis Jofre, Lauri Vaha-Savo, Jordi Romeu, Christian Ballesteros, Clemens Icheln, Katsuyuki Haneda |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio, BarcelonaTech, Department of Electronics and Nanoengineering, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
Numerical models Geometry Antenes de microones Radiation properties Handset Imaging phantom Phantoms law.invention Degradation Mode (computer interface) Microwave antennas law Electrical and Electronic Engineering Gain Shadow mapping Simulation user modeling User modeling Enginyeria de la telecomunicació [Àrees temàtiques de la UPC] Terminal (electronics) 5G handset Antennas (Electronics) Antenes (Electrònica) Antennas mmWave arrays Antenna (radio) |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works The emergence of mobile terminals operating at millimeter-wave frequencies necessitates the ability to evaluate the effect the environment, and in particular, users have on their radiation properties. Some studies evaluated the shadowing effects of a hand or an entire body for simple antenna configurations. This letter proposes a method for reliably predicting the performance of different array geometries in the presence of the users when they operate the mobile with one or with two hands. In practice, the way a mobile is operated is varying strongly between users, and hence, it is of great interest to draw a methodology to both numerically and experimentally evaluate any handset design in a large number of use cases in a repeatable manner. The use of numerical models and realistic phantoms allow high repeatability when evaluating the terminal radiation under real use conditions. Both the simulated body and the human phantom are used to study the field scattering from the handset arrays subject to the user interaction, yielding consistent results between them. Results suggest that shadowing by the user's torso usually decreases gain between 20-30 dB close to the region of the user. The user posture largely affects the spherical coverage, particularly for those antennas close to the corners in a two-hand mode. This work was supported by the Spanish Ministry of Economy under projects MDM2016-0600 and 2019-107885GB-C31 and the Ministry of Education with pre-doctoral grant FPU17/05561 to the first author. |
| Databáze: | OpenAIRE |
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