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Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 The estimates of the total electromagnetic background intensity created by mobile and base stations of GSM cellular communication networks in urban area in places of subscribers gathering on business hours are made by computer modeling of cellular ...
A. S. Svistunov
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Advanced Communication Technology Satellite (ACTS) multibeam antenna technology verification experiments [PDF]
, 1992 The Advanced Communication Technology Satellite (ACTS) is a key to reaching NASA's goal of developing high-risk, advanced communications technology using multiple frequency bands to support the nation's future communication needs.
Acosta, Roberto J. +2 more
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Tunable Multibeam Holographic Metasurface Antenna
IEEE Antennas and Wireless Propagation Letters, 2022 A metasurface beam-steering antenna at microwaves is proposed in this letter, which is designed according to holographic theory and has the ability to create multibeam radiation patterns with independent control of the individual beam direction.
Despoina Kampouridou +1 more
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Multibeam and multipolarization antenna
2006 First European Conference on Antennas and Propagation, 2006The design of a novel reconfigurable antenna for MIMO systems is presented. Simulation and experimental results shows its capabilities in a multibeam reconfiguration in a 4? steradians environment. It can allow an enhancement in wireless communication employing multipath channel combining with a radiation pattern diversity.
Sarrazin, Julien +3 more
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IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450), 2004
One of the most difficult problems in scanning antenna technology is the realization of wide angle scanning. The proposed architecture seems to overcome the difficulties of realizing complex antennas, and offers high efficiency with wide-angle scanning capabiliy and with (almost) indentical beams regardless of scanning angle.
Herscovici, Naftali, Šipuš, Zvonimir
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One of the most difficult problems in scanning antenna technology is the realization of wide angle scanning. The proposed architecture seems to overcome the difficulties of realizing complex antennas, and offers high efficiency with wide-angle scanning capabiliy and with (almost) indentical beams regardless of scanning angle.
Herscovici, Naftali, Šipuš, Zvonimir
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Multibeam Antenna in Millimeter Waves
32nd European Microwave Conference, 2002, 2002This paper deals with a multibeam antenna in 60 GHz band. This structure is based on a Butler Matrix which fed a four printed antenna array. Two different solutions are presented to avoid the crossing point of the microstrip line : a microstrip-thick slot-microstrip transition or two hybrids 90°.
Lafond, Olivier, Himdi, Mohamed
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A Novel 2-D Multibeam Antenna Without Beamforming Network [PDF]
IEEE Transactions on Antennas and Propagation, 2016 © 2016 IEEE. A novel design of multibeam array antenna without feeding network is presented in this communication. This array antenna consists of 3 × 3 microstrip patches as radiators.
Muftah Asaadi, Zuping Qian, Can Ding
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A Multibeam Cassegrain Antenna
1975 5th European Microwave Conference, 1975This paper deals with generation of a multibeam pattern for three-dimensional radar surveillance by a stacked feed horn system installed in a Cassegrain antenna. Although its effective f/D-ratio is relatively high compared with the corresponding one of the primarily feed paraboloid, lateral displacement of feed horns in the focal plane results in ...
H. Gniss, E. Zocher
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Digest on Antennas and Propagation Society International Symposium, 2003
A multibeam antenna prototype for an ESM system is presented. The antenna is formed by a semicircular array of Vivaldi radiating elements, fed by an RKR microstrip lens. Both the lens and the array are printed on the same dielectric substrate. The antenna operates over one octave frequency band.
M. Sierra +3 more
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A multibeam antenna prototype for an ESM system is presented. The antenna is formed by a semicircular array of Vivaldi radiating elements, fed by an RKR microstrip lens. Both the lens and the array are printed on the same dielectric substrate. The antenna operates over one octave frequency band.
M. Sierra +3 more
openaire +1 more source
Multibeam antennas for indoor wireless communications
IEEE Transactions on Communications, 2002A multibeam beamformer in combination with a decision feedback equalizer is considered for the base station in a single-cell 100-Mb/s TDMA/TDD QPSK indoor wireless network at 24 GHz. The outage rate in terms of required SNR/bit/antenna is estimated using a statistical, clustered propagation model and for beam selection diversity and two-beam combining.
Kuo-Hui Li +2 more
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