Results 11 to 20 of about 152,416 (209)
MODELING OF MULTIBEAM ANTENNAS FOR TELECOMMUNICATION SYSTEMS
Наука и техника, 2013 The paper considers possibilities pertaining to application of multibeam antennas for communication systems. Modeling of a pyramidal horn antenna and lattice has been carried out in the paper.
V. V. Muraviov +3 more
doaj +1 more source
Challenges in the Multibeam Antennas
, 2017 In this project, we are trying to shed light on various aspects of the antenna arrays. Special focus is on solving the problems related to multibeam antennas. One traditional application of the multibeam antennas is sum and difference patterns. Wireless communication systems are demanding multibeam and multiband antennas.
Morteza Shahpari
openaire +3 more sources
Multibeam Antennas Array Pattern Synthesis Using a Variational Method
Radioengineering, 2007 In this paper a new method is described for multibeam antennas synthesis where both the amplitude and phase of each radiating element is a design variable.
F. T. Bendimerad +2 more
doaj +1 more source
Multimode and Multiband Microstrip Antennas [PDF]
, 2007 This thesis describes original work on the broadband and multiband matching of microstrip patch antennas. Microstrip patch antennas suffer from many constraints on their performance. One major restriction is their narrow impedance bandwidth.
Abunjaileh, Alaa Ibrahim
core +7 more sources
Optimization of Multibeam Antennas Employing Generalized Joined Coupler Matrix [PDF]
, 2023 Currently, there is increasing interest in analog multibeam antennas whose beams can be flexibly steered to arbitrary directions. In a previous paper, we presented the theoretical framework for synthesizing individually steerable multiple beams using ...
Guo, CA, Ni, W, Guo, YJ, Yuan, J, Zhu, H
core +1 more source
On the sensitivity of the capacity enhancement of a TDMA system with adaptive multibeam antennas [PDF]
, 1997 The paper presents results for the likely capacity improvement when an adaptive multibeam antenna is used in conjunction with air interface parameters akin to the DCS1800 system.
Swales, SC, Tsoulos, GV, Beach, MA
core +1 more source
Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]
, 2011 Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Larue de Tournemine, Cécile +5 more
core +1 more source
On the analysis of switched-beam antennas for the W-CDMA downlink [PDF]
, 2004 Smart antennas are widely recognized as an enabling technology for addressing the demand of future wireless network capacity when employed in place of traditional fixed-coverage sector antennas.
Beach, Mark +5 more
core +1 more source
Физика волновых процессов и радиотехнические системы, 2021 Antenna systems based on hemispherical lenses allow full azimuth scanning or electronically controlled sector scanning. The article presents a numerical simulation of a broadband multi-beam antenna system based on a hemispherical metamaterial lens made ...
Yuri G. Pasternak +3 more
doaj +1 more source
Graphene-Based Multi-Beam Reconfigurable THz Antennas
IEEE Access, 2019 Several configurations of multi-beam reconfigurable THz antennas based on graphene have been investigated. Two modulation mechanisms of graphene-based THz antenna are introduced, one is the reflector-transmission window model, and the other is the ...
Yanbin Luo +8 more
doaj +1 more source