Results 221 to 230 of about 16,043 (252)
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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
openaire +1 more source
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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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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A Novel Wide-Band Butler Matrix for Vehicle Radars at 24GHz
18th International Conference on Electronics, Communications and Computers (conielecomp 2008), 2008There is a great scientific and commercial interest in car radars for anti-crash and pre-crash systems, for which beamformer networks with antenna arrays are becoming the norm. In this paper a novel Butler matrix at 24 GHz using a new type of micromachined suspended transmission-line couplers presented.
Alonso Corona-Chavez +3 more
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Multilayered substrate integrated waveguide 4 × 4 butler matrix
International Journal of RF and Microwave Computer-Aided Engineering, 2012In this article, a multilayered substrate integrated waveguide (SIW) Butler matrix beam-forming network is proposed, designed, and demonstrated at 24 GHz for automotive radar system applications. The proposed low-cost SIW structure can be used to develop a highly integrated multibeam antenna platform in automotive radar systems and other applications ...
Tarek Djerafi, Ke Wu
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Beam Forming Networks Using Reduced Size Butler Matrix
Wireless Personal Communications, 2010Recent trend shows that the reduced size couplers are becoming potential building blocks and have created a continuing demand for the growing wireless communications market. Therefore, this paper presents a new design and realization for reducing the size of the branch-line coupler using eight two-step stubs that operates at 2.45 GHz.
Nor Aishah Muhammad +5 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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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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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
openaire +1 more source
Compact Butler Matrix for Wideband Beamforming
12th European Conference on Antennas and Propagation (EuCAP 2018), 2018null Qiu Ping Chen +2 more
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3-D-Printed Modified Butler Matrix Based on Gap Waveguide at W-Band for Monopulse Radar
IEEE Transactions on Microwave Theory and Techniques, 2020Adrian Tamayo-Dominguez +2 more
exaly