Results 11 to 20 of about 2,845,707 (370)
WIDEBAND X-BAND MICROSTRIP BUTLER MATRIX [PDF]
Progress In Electromagnetics Research, 2007 This paper presents the design of a wideband X-band microstrip 4×4Butler matrix. The wideband performance of the Butler matrix means that it possesses equal coupling and difference of phases throughout the operating band. Design of the wideband components such as 3-branch branch line hybrid, crossover and Schiffman line phase shifter are presented in ...
Jun He +4 more
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Investigation on Beam Alignment of a Microstrip-Line Butler Matrix and an SIW Butler Matrix for 5G Beamforming Antennas through RF-to-RF Wireless Sensing and 64-QAM Tests [PDF]
Sensors, 2021 In this paper, an intuitive approach to assessing advantages of beamforming in 5G wireless communication is proposed as a novel try and practical demonstration of importance of alignment between the transmitter’s and receiver’s beams working in ...
Munsu Jeon +7 more
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BUTLER MATRIX IN MICROSTRIP-SLOT TECHNOLOGY
International Journal of Research -GRANTHAALAYAH, 2017 The design of a 4 x 4 Butler Matrix for use in a multi-beam antenna array operating over wide frequency band is presented. In order to achieve wideband characteristics, the matrix uses microstrip-slot technology that employs two microstrip dielectric layers with a common ground plane and a coupling slot.
D.Rajeswari, T.Jayanthy
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Staircase Array Antenna With Stacked Butler Matrix for Concurrent Multi-Beams [PDF]
IEEE Access, 2023 Massive Multiple-Input Multiple-Output (Massive MIMO), which uses a large number of antenna, has been investigated to realize high-speed wireless communications. However, as the number of antenna increases, the number of components also increases.
Hideya So +6 more
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Butler-Matrix Beamspace Front-Ends for Massive MIMO: Architecture, Loss Budget, and Capacity Impact [PDF]
SensorsMassive Multiple-Input Multiple-Output (MIMO) systems with hundreds or thousands of antenna elements are fundamental to next-generation wireless networks, promising unprecedented spectral efficiency through spatial multiplexing and beamforming.
Felipe Vico, Jose F. Monserrat, Yiqun Ge
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SIW Butler Matrix with Modified Hybrid Coupler for Slot Antenna Array
IEEE Access, 2016 This paper presents a substrate integrated waveguide Butler matrix with a modified hybrid coupler, operating from 28 to 32 GHz. The modified hybrid coupler is realized by using 90° hybrid coupler followed by a -45° compensating phase ...
Qing-Ling Yang +4 more
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Miniaturization Design for 8 × 8 Butler Matrix Based on Back-to-Back Bilayer Microstrip [PDF]
International Journal of Antennas and Propagation, 2014 A low-cost, compact 8 × 8 Butler matrix based on a novel bilayer microstrip configuration is presented and implemented for 4.3 GHz telecommunication application.
Yu Zhai +3 more
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Broadband Butler Matrices with the Use of High-Pass LC Sections as Left-Handed Transmission Lines [PDF]
Radioengineering, 2014 An application of left-handed transmission line sections in Butler matrices has been investigated. It has been shown, for the first time, that the utilization of both left-handed and right-handed transmission lines allows for broadband differential phase
K. Staszek, S. Gruszczynski, K. Wincza
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IEEE AccessThe paper proposes a four-directional beamforming switched antenna system based on Butler matrix for 28 GHz mmWave. It is made up of a 90-degree coupler, a crossover, and a 45-degree phase shifter.
Ming-An Chung +2 more
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IEICE transactions on electronicsSUMMARY This paper introduces a wireless-powered relay transceiver designed to extend 5G millimeter-wave coverage. It employs an on-chip butler matrix, enabling beam control-free operation.
Keito Yuasa +4 more
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