Results 241 to 250 of about 1,869,876 (283)
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The uniqueness of the Butler matrix as a commutating switch
IEEE Transactions on Antennas and Propagation, 1971It is shown that the Butler matrix is the only N input, N output network with the property that its output currents can be permuted cyclically by varying the phases of its input currents.
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Microstrip Butler matrix design and realization for 7 T MRI
Magnetic Resonance in Medicine, 2011AbstractThis article presents the design and realization of 8 × 8 and 16 × 16 Butler matrices for 7 T MRI systems. With the focus on low insertion loss and high amplitude/phase accuracy, the microstrip line integration technology (microwave‐integrated circuit) was chosen for the realization.
Yazdanbakhsh, Pedram, Solbach, Klaus
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Novel butler matrix using CPW multilayer technology
IEEE Transactions on Microwave Theory and Techniques, 2005In this paper, a novel 4 times 4 two-layer Butler matrix based on a broad-band two-layer slot-coupled directional coupler is presented and implemented at 5.8 GHz using coplanar waveguide technology. With the slot-coupled directional coupler, the proposed matrix was designed without using any crossovers as used in conventional Butler matrices, which ...
M. Nedil, T.A. Denidni, L. Talbi
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A Single-Layer Hollow-Waveguide 8-Way Butler Matrix
IEICE Transactions on Electronics, 2005The authors propose a single-layer hollow-waveguide 8-way Butler matrix. All components of the Butler matrix are in a single layer which contributes to low-cost fabrication. To reduce the length of the couplers, a step structure is installed in the coupled region.
Shin-ichi YAMAMOTO +2 more
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2017 Conference on Microwave Techniques (COMITE), 2017
In this paper, a novel design of a broadband 3 x 3 Butler matrix is proposed. It is composed of three single-section coupled-line directional couplers and two Schiffman phase shifters and operates in the frequency range 2.5 GHz – 3.5 GHz. The fabricated 3 x 3 Butler matrix features very good frequency response in terms of transmission imbalance ...
Szczepan Odrobina +3 more
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In this paper, a novel design of a broadband 3 x 3 Butler matrix is proposed. It is composed of three single-section coupled-line directional couplers and two Schiffman phase shifters and operates in the frequency range 2.5 GHz – 3.5 GHz. The fabricated 3 x 3 Butler matrix features very good frequency response in terms of transmission imbalance ...
Szczepan Odrobina +3 more
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Design of a new millimeter-wave Butler matrix
2006 IEEE Antennas and Propagation Society International Symposium, 2006A 4 /spl times/ 4 slot Butler matrix has been designed around 38 GHz band. The circuit is compact and has low losses. In the proposed design, a novel slot hybrid coupler and slot cross-over were also designed and introduced. This new configuration demonstrates the possibility to design Butler matrices using slot-line technology.
M. Nedil, T.A. Denidni
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Topology of $32\times 32$ Butler Matrix
2023 International Symposium on Networks, Computers and Communications (ISNCC), 2023Mehri Borhani Kakhki +3 more
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Compact Butler Matrix Using Lumped Elements
Microwave and Optical Technology LettersABSTRACTThis paper describes the design of a new compact circuit for Butler Matrix using few lumped elements to operate at 2.4 GHz. It is demonstrated that acceptable performance could be only achieved by proper electromagnetic modeling of the lumped components using metallic pads and resistor, inductor, and/or capacitor surfaces in Ansys HFSS, to ...
Edson R. Schlosser +4 more
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1976 Antennas and Propagation Society International Symposium, 2005
J. Shelton, J. Hsiao
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J. Shelton, J. Hsiao
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2015
In this paper, a new miniaturized design of on-chip 4×4 Butler matrix implemented in SiGe BiCMOS technology is presented. The proposed Butler matrix was designed using two different approaches operating at the same frequency of 5.5 GHz. In a first example, a miniaturized lumped element design was implemented by increasing the density of the individual ...
Calzona D. +3 more
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In this paper, a new miniaturized design of on-chip 4×4 Butler matrix implemented in SiGe BiCMOS technology is presented. The proposed Butler matrix was designed using two different approaches operating at the same frequency of 5.5 GHz. In a first example, a miniaturized lumped element design was implemented by increasing the density of the individual ...
Calzona D. +3 more
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