Results 31 to 40 of about 371,700 (244)
Applying the Czédli-Schmidt Sequences to Congruence Properties of Planar Semimodular Lattices
Discussiones Mathematicae - General Algebra and Applications, 2021 Following Grätzer and Knapp, 2009, a planar semimodular lattice L is rectangular, if the left boundary chain has exactly one doubly-irreducible element, cl, and the right boundary chain has exactly one doubly-irreducible element, cr, and these elements ...
Grätzer G.
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Planar Four-Port Dual Circularly-Polarized MIMO Antenna for Sub-6 GHz Band
IEEE Access, 2020 In this work, two configurations (Config.-A and Config.-B) of planar four-port dual circularly-polarized (CP) multiple-input-multiple-output (MIMO) antenna are proposed for sub-6 GHz (3.4-3.8 GHz) applications.
Shobhit Saxena +5 more
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IEEE Microwave Magazine, 2006 The development of the broadband antenna for ultrawideband (UWB) applications such as communications, imaging, radar, and localization is discussed. UWB systems are based on transmitting and receiving impulses with extremely wide spectra. As the antennas for UWB should have broad operating bandwidths for impedance matching and high-gain radiation in ...
Cheng, Zhi Ning +5 more
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Circularly Polarized Broadband Printed Antenna for Wireless Applications
Sensors, 2018 A simple, compact sickle-shaped printed antenna with a slotted ground plane is designed and developed for broadband circularly polarized (CP) radiation.
Md. Samsuzzaman, Mohammad Tariqul Islam
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Journal of Combinatorial Theory, Series A, 2018 The error in the differentiation argument has been ...
Simeon Ball, Michel Lavrauw
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Broadband Compact Quasi Yagi Antenna for UHF Wireless Communication Systems with Enhanced Performance at UHF ISM Bands [PDF]
Radioengineering, 2020 In this study, a broadband planar quasi Yagi antenna operated at ultra-high frequency (UHF) band is presented. The performance of the antenna is particularly improved for two popular UHF frequencies of 433 and 868 MHz used in several wireless ...
Y. Bakirli, A. Selek, M. Secmen
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An Ultra-Wide Band Radome for High-Performance and Dual-Polarized Radar and Communication Systems
IEEE Access, 2020 This paper presents a new design technique to develop a multi-layer radome for ultra-wide-band, dual-polarized radar and communication systems. In the proposed technique, a multi-layer radome is designed using a combination of A-sandwich structures ...
Zeeshan Qamar +2 more
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Porous Polypropylene Membrane Based pH Sensing for Skin Monitoring
IEEE Access, 2022 An iridium oxide-based electrical pH sensor that is suitable to be embedded in an electronic bandage for skin monitoring has been developed. The electrical pH sensor does not entail high-temperature fabrication processes thus is suitable to be built on ...
Khengdauliu Chawang +4 more
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Planar lattices and planar graphs
Journal of Combinatorial Theory, Series B, 1976 AbstractIt is shown that a finite lattice is planar if and only if the (undirected) graph obtained from its (Hasse) diagram by adding an edge between its least and greatest elements is a planar graph.
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Theoretical Computer Science, 2018 We introduce the family of $k$-gap-planar graphs for $k \geq 0$, i.e., graphs that have a drawing in which each crossing is assigned to one of the two involved edges and each edge is assigned at most $k$ of its crossings. This definition is motivated by applications in edge casing, as a $k$-gap-planar graph can be drawn crossing-free after introducing ...
Sang Won Bae 0001 +10 more
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