Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Amr Elsakka"'
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 112-123 (2022)
A new antenna system concept is presented where a wide-scan focal plane array antenna is used to achieve point-to-multipoint communication. The focal plane of a parabolic toroid reflector is populated with several antenna arrays, the positions of whi
Externí odkaz:
https://doaj.org/article/a60c0ebf274448bb8f9c9daee6a97857
Autor:
Thomas A. H. Bressner, Amr Elsakka, Amirashkan Farsaei, Martin N. Johansson, Oleg A. Iupikov, Rob Maaskant, A. Bart Smolders, Ulf Johannsen
Publikováno v:
IEEE Access, Vol 9, Pp 127141-127149 (2021)
Fixed-beam, high-gain antenna systems can be used for a finer partitioning of the currently used cell-sectoring. This partitioning has the benefit of reducing the number of users seen per antenna beam, which reduces interference. Furthermore, the hig
Externí odkaz:
https://doaj.org/article/105409bd8b4c436bb4b7018adecaa5e4
The use of the generalized Snell's law opens wide possibilities for the manipulation of transmitted and reflected wavefronts. However, known structures designed to shape reflection wave fronts suffer from significant parasitic reflections in undesire
Externí odkaz:
http://arxiv.org/abs/1609.08041
Autor:
Amirashkan Farsaei, Ulf Johannsen, Oleg Iupikov, Martin Johansson, Thomas A. H. Bressner, Rob Maaskant, A. Bart Smolders, Amr Elsakka
Publikováno v:
IEEE Access, Vol 9, Pp 127141-127149 (2021)
IEEE Access, 9, 127141-127149. Institute of Electrical and Electronics Engineers
IEEE Access, 9, 127141-127149. Institute of Electrical and Electronics Engineers
Fixed-beam, high-gain antenna systems can be used for a finer partitioning of the currently used cell-sectoring. This partitioning has the benefit of reducing the number of users seen per antenna beam, which reduces interference. Furthermore, the hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09a6892342af1158dc4335b0c2368f94
https://doi.org/10.1109/ACCESS.2021.3110939
https://doi.org/10.1109/ACCESS.2021.3110939
Autor:
Eduardo V. P. Anjos, Marzieh SalarRahimi, Thomas A. H. Bressner, Parastoo Takhighani, Adrian Lahuerta-Lavieja, Amr Elsakka, Jorrit S. Siebenga, Vladimir Volski, Christian Fager, Dominique Schreurs, Guy A. E. Vandenbosch, Ulf Johannsen, A. Bart Smolders, Marcel Geurts
Publikováno v:
IEEE Systems Journal, 16(3), 4489-4500. Institute of Electrical and Electronics Engineers
This article introduces the FORMAT array, a reconfigurable millimeter-wave antenna array platform based on antenna tiles. FORMAT stands for Flexible Organization and Reconfiguration of Millimeter-wave Antenna Tiles, which is a unique hardware solutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61b21ff57c4f0fc2be00607013599ad4
https://lirias.kuleuven.be/handle/20.500.12942/701685
https://lirias.kuleuven.be/handle/20.500.12942/701685
Publikováno v:
2021 15th European Conference on Antennas and Propagation (EuCAP)
A design concept for a phased-array-fed reflector antenna system intended for millimeter-wave base stations is presented. This concept is motivated by the need for efficient beamforming antenna systems with reduced power consumption as compared to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a29a7859b4ddc6aa826987890639d1e0
https://doi.org/10.23919/EuCAP51087.2021.9411139
https://doi.org/10.23919/EuCAP51087.2021.9411139
Publikováno v:
Proceedings of the International Symposium on Antennas and Propagations 2020, ISAP 2020, 593-594
STARTPAGE=593;ENDPAGE=594;TITLE=Proceedings of the International Symposium on Antennas and Propagations 2020, ISAP 2020
STARTPAGE=593;ENDPAGE=594;TITLE=Proceedings of the International Symposium on Antennas and Propagations 2020, ISAP 2020
Lower efficiencies of power amplifiers and increased path loss at higher frequencies are two reasons why utilizing millimeter-wave frequencies for future wireless communications systems is challenging. In this paper, two distinct antenna systems are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdc7fa4594b89d8a2ba8d58e7658145c
https://doi.org/10.23919/isap47053.2021.9391179
https://doi.org/10.23919/isap47053.2021.9391179
Autor:
Amr Elsakka, Ulf Johannsen, Iupikov, Oleg A., Johansson, Martin N., Ivashina, Marianna V., Adrianus Bernardus Smolders
Publikováno v:
Phased Array Feed Workshop
Pure TUe
Pure TUe
With the emergence of the mobile fifth generation (5G), additional challenges are introduced for the radio access antennas at the base stations that operate at mm-waves. The base station antenna is then required to deliver high EIRP to compensate for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::71f4186fe146cc605cb9e0afaabd577b
https://research.tue.nl/nl/publications/bd1a3b49-8ad2-4134-9b38-1cc4f057e3e3
https://research.tue.nl/nl/publications/bd1a3b49-8ad2-4134-9b38-1cc4f057e3e3
Publikováno v:
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. 64(10):4266-4276
Control of electromagnetic waves using engineered materials is very important in a wide range of applications, therefore there is always a continuous need for new and more efficient solutions. Known natural and artificial materials and surfaces provi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eae93ef462454f62a78884232ee6be6a
https://doi.org/10.1109/TAP.2016.2594824
https://doi.org/10.1109/TAP.2016.2594824
Autor:
Amr Elsakka, Mohammad Albooyeh, Do-Hoon Kwon, Sergei A. Tretyakov, Svetlana N. Tcvetkova, Ana Díaz-Rubio, Viktar Asadchy
Publikováno v:
Physical Review X, Vol 7, Iss 3, p 031046 (2017)
Recent advances in engineered gradient metasurfaces have enabled unprecedented opportunities for light manipulation using optically thin sheets, such as anomalous refraction, reflection, or focusing of an incident beam. Here we introduce a concept of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1360feaab59179a468e3e96196d0ee8e
https://doi.org/10.1103/PhysRevX.7.031046
https://doi.org/10.1103/PhysRevX.7.031046