Results 211 to 220 of about 16,092 (254)
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Novel UWB multilayer Butler matrix
2010 IEEE Antennas and Propagation Society International Symposium, 2010Smart antennas are introduced to improve the performance of wireless systems and increase their capacity by spatial filtering, which can separate spectrally and temporally overlapping signals from multiple users. Switched beams systems are referred as smart antenna system that forms multiple fixed beams with enhanced sensitivity in a specific area ...
M traii +3 more
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A Novel Design of Miniaturized Butler Matrix
2018 IEEE 18th International Conference on Communication Technology (ICCT), 2018In this paper, we design a stepped miniaturized 4 × 4 Butler matrix using the principle of impedance transformation. Compared with the traditional Butler matrix, the miniaturized Butler matrix has a reduced area of 78.6%, and the output amplitude is stable, the output phase gradient meets the design requirements.
Ruobing Liang +6 more
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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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Ultra wideband coupler design for Butler Matrix application
The 17th Asia Pacific Conference on Communications, 2011This paper presents a design of a 3-dB compact ultra wideband (UWB) coupler for a 4×4 Butler Matrix which is operating between 3 and 11 GHz frequency range. The design is using microstrip-slot multilayer technology that allows having a compact and very broad bandwidth coupler.
Nor Salehah Binti Muklas +2 more
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A Design of Compact Ultra Wideband Coupler for Butler Matrix
Wireless Personal Communications, 2012A design of 3 dB compact ultra wideband (UWB) coupler for a 4 A— 4 Butler Matrix, which is operating between 3 and 11 GHz frequency range, is presented in this paper. The proposed design uses multilayer technology that allows having a compact and broad bandwidth coupler. The design uses elliptically shaped broadside coupled strips and a slot created in
Nor Salehah Binti Muklas +5 more
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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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3D-Butler matrix topologies for phased arrays
2007 International Conference on Electromagnetics in Advanced Applications, 2007The 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 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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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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