Results 21 to 30 of about 1,869,876 (283)
Flexible Phase Difference of 4 × 4 Butler Matrix without Phase-Shifters and Crossovers
International Journal of Antennas and Propagation, 2019 This paper proposes a new Butler matrix topology. The proposed Butler matrix consists of only four couplers without phase shifters and crossovers. The output phase difference is relatively flexible.
Ke Han, Wuyu Li, Yibin Liu
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A 20-GHz-Band
IEEE Access, 2019 In this paper, a 20-GHz-band 64 x 64 hollow waveguide Butler matrix is proposed. By using two-plane short slot couplers and a modified diagram, a short-axis two dimensional Butler matrix is realized.
Takashi Tomura +5 more
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IEEE Access, 2020 In this paper, a smart antenna array based on the image-aware technique that can automatically switch its beam to track users is proposed. Mobilenet, a deep neural network (DNN), is utilized to find the users' position information from images; it is ...
Yuchen Ma +7 more
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A Low Complexity
IEEE Access, 2019 Beamforming networks such as Butler Matrices are important for multibeam array antenna applications. The challenge for Butler Matrix design is that their complexity increases with the number of ports.
Qingling Yang +7 more
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Walter Butler to his mother, from Melbourne.
, 2020 This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.
Butler Family
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Generalized One-Dimensional Parallel Switching Matrices With an Arbitrary Number of Beams
IEEE Journal of Microwaves, 2021 This paper introduces a novel family of one-dimensional switching matrices, also known as beamforming networks (BFNs), which can be sized for an arbitrary number of beams.
Jiro Hirokawa, Nelson J. G. Fonseca
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High resolution beam switch antenna based on modified CRLH Butler matrix
Engineering Reports, 2021 A new beam switch antenna based on a composite right/left‐handed (CRLH) Butler matrix is presented and experimentally validated. The CRLH transmission line (TL) is proposed to increase the number of beams.
Reza Karimian +3 more
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Wide bandwidth Butler matrix network
Electronics Letters, 1967 Butler matrix networks, used for forming multiple beams from linear aerial arrays, are limited in their bandwidth of operation by their requirement for components with constant values of phase shift over this bandwidth. This letter describes a method for designing such networks for wide-bandwidth operation by employing particular combinations of ...
P.E.K. Chow, D.E.N. Davies
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Angewandte Chemie, EarlyView.Carbonate species play a previously overlooked role in near‐neutral seawater electrocatalysis. By coupling electrochemical hydrodynamics with mesoscopic simulations, we reveal a plausible carbonate‐mediated route in which carbonate functions as an interfacial proton acceptor and water as the oxygen donor, showing a possible mechanistic picture of ...
Miao Wang +2 more
wiley +2 more sources
Miniaturization Design for 8 × 8 Butler Matrix Based on Back-to-Back Bilayer Microstrip
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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