Results 311 to 320 of about 2,845,707 (370)

�������������������� ���������������������� ���������������������� �������������� (���������������� ���������������������������� Butler Matrix)

2008
"Smart antennas" can greatly improve the performance of wireless communication systems by providing increased capacity, better link quality and immunity to interference. A simple smart antenna structure is fixed beam forming and beam selection. More complex structures require combining of the signals from multiple receivers.Butler matrices are used in ...
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Compact 4 × 4 Multilayer Butler Matrix With Four-Slot Array

IEEE transactions on microwave theory and techniques
Novel multilayer Butler matrix (BM) miniaturizing layouts applicable to any $N \times N$ are proposed, reducing the conventional size by more than twofold. The layouts eliminate crossover couplers, considerably enhancing compactness and isolation.
Mostafa O. Shady, A. Kishk
semanticscholar   +1 more source

94 GHz Butler Matrix-Integrated MTM SIW Beamforming Array in Glass IPD

IEEE Antennas and Wireless Propagation Letters, 2023
In this letter, we propose a low-profile beamforming array operating in the W-band, which is based on the Butler matrix integrated with substrate-integrated waveguide metamaterial (MTM) antennas.
Shuping Li, Kun-Dong Chiu, Donglin Gao, C. Wu, C. Kuo   +4 more
semanticscholar   +1 more source

Design of the Compact Planar Butler Matrix

2018 Asia-Pacific Microwave Conference (APMC), 2018
A planar $4\times 4$ Butler matrix with a compact size is proposed. With the dual transmission lines, the proposed Butler matrix has arbitrary phase difference and phase delay for the used couplers and crossovers, respectively. In terms of experimental verification, the circuit size of the fabricated Butler matrix is $0.86\lambda_{g}\times 0.66\lambda_{
Chen-Chan Tang, Chun-Yuan Huang, Ching-Wen Tang   +2 more
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A Miniaturized Wideband 4×8 Butler Matrix for Beamforming in Millimeter-Wave Applications

IEEE transactions on microwave theory and techniques, 2023
This article presents our study on a wideband miniaturized $4\times8$ Butler matrix (BM) beamforming network based on a stacked metallic waveguide layout in millimeter-wave band.
Wen Sun, Xin Rao, G. Su, Lingling Sun, Chao Shu, Xiaodong Chen   +5 more
semanticscholar   +1 more source

Millimeter-Wave Three-Layer Substrate-Integrated 9 × 9 Butler Matrix and Its Application to Wide-Angle Endfire Multibeam Metasurface Antenna

IEEE transactions on microwave theory and techniques
A novel three-layer substrate-integrated waveguide (SIW) $9\times9$ Butler matrix (BM) that can produce a broadside beam and wide-angle coverage is presented in this article.
Student Member Ieee Chun Geng, Member Ieee Ji-Wei Lian, F. I. Y. Jay Guo, Senior Member Ieee Dazhi Ding   +3 more
semanticscholar   +1 more source

Folded single-layer 8 × 8 Butler matrix

Journal of Electromagnetic Waves and Applications, 2017
AbstractA concept of an 8 × 8 Butler matrix realized in a single-layer structure folded to create a cylindrical surface has been proposed.
Izabela Slomian, Krzysztof Wincza, Kamil Staszek, Slawomir Gruszczynski   +3 more
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3D-Butler matrix topologies for phased arrays

2007 International Conference on Electromagnetics in Advanced Applications, 2007
The investigation described here is being carried out within the NATALIA project funded by the ESA. This project aims at the realisation of a low-cost receive-only Ku-band phased array antenna for automotive applications for which low-cost and small dimensions are the most essential features.
L. Baggen, M. Bottcher, M. Eube
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A Butler Matrix-Based Multibeam W-Band Slot Antenna Array Fabricated by Metal Additive Manufacturing Technology

IEEE Transactions on Antennas and Propagation
In this communication, a ridged waveguide (RWG) slot antenna array based on micro-coaxial line (CL) Butler matrix beamforming network (BFN) operating in the W-band is proposed.
Dongxu Wang, Kaida Xu, Yuanxi Cao, Cheng Guo, Sen Yan   +4 more
semanticscholar   +1 more source

Compact Multibeam Antenna Array Facilitated by Miniaturized Slow Wave Substrate Integrated Waveguide Butler Matrix

IEEE Transactions on Antennas and Propagation
This communication presents a compact multibeam antenna array facilitated by a $4\times 4$ Butler matrix with substantially miniaturized dimensions based on a slow-wave substrate integrated waveguide (SW-SIW).
Jingya Deng, Yin Zhang, Wei Lin
semanticscholar   +1 more source