Results 21 to 30 of about 41,921 (300)
IEEE Access, 2021 In this work, we present a numerical study of 1D and 2D closely spaced antenna arrays of microstrip dipole antennas covered by a metasurface in order to properly cloak and decouple the antenna arrays operating at neighboring frequencies. We show that the
Doojin Lee, Alexander B. Yakovlev
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Nanorod optical antennas for dipolar transitions [PDF]
, 2009 Optical antennas link objects to light. Here, we analyze metal nanorod antennas as cavities with variable reflection coefficients to derive the interaction of dipolar transitions with radiation through the antenna modes.
Stefani, Fernando D. +2 more
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Electronics Letters, 1972 A new small unidirectional wire antenna, useful for an indoor television receiving antenna, has been developed for use in the v.h.f. band. This antenna consists of two closely spaced dipoles. This letter describes the principle involved and introduces the equations for input impedance and gain.
Y. Mikuni, K. Nagai
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IEEE Access, 2019 Wideband aperture-coupled magneto-electric (ME) dipole antennas fed by microstrip line are proposed in this paper. The aperture-coupled microstrip-line-fed method was utilized in the proposed configuration to replace the conventional Γ-shaped ...
Jie Sun, Kwai-Man Luk
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Influence of the Mesh Size on the Computation of the Close Near Fields of Dipole Antennas
IEEE Open Journal of Antennas and Propagation, 2022 While evaluating the near field of dipole antennas, it is noted that different software suites yield values of the electric and the magnetic fields, at the surface of antennas, that can be substantially different, especially at the tips and at the feed ...
Alessandra Paffi +2 more
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An efficient asymptotic extraction approach for the green's functions of conformal antennas in multilayered cylindrical media [PDF]
, 2010 Asymptotic expressions are derived for the dyadic Green's functions of antennas radiating in the presence of a multilayered cylinder, where analytic representation of the asymptotic expansion coefficients eliminates the computational cost of numerical ...
Cook, G.G., Khamas, S.K., Wu, J.
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International Journal of Antennas and Propagation, 2014 This paper introduces the design and implementation of two high gain Quasi-Yagi printed antennas developed on silicon substrate for 94 GHz imaging applications.
Osama M. Haraz +4 more
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Glacier bed surveying with helicopter-borne dual-polarization ground-penetrating radar
Journal of Glaciology, 2019 Traditionally, helicopter-borne ground-penetrating radar (GPR) systems are operated with a single pair of bistatic dipole antennas to measure the thickness of glaciers.
LISBETH LANGHAMMER +6 more
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New Analysis and Design Techniques for Arbitrary Reactance Trap Dipoles
IEEE Open Journal of Antennas and Propagation, 2023 The work presents a significantly revised analysis of a classic resonator loaded antenna– the trap dipole. The authors demonstrate in calculation, simulation, and measurement that trap dipoles antennas are not matched or resonant at the same ...
Paul R. Winniford +3 more
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Aperture efficiency of chemically etched horns at 93 GHz [PDF]
, 1990 The aperture efficiency of monolithic two-dimensional horn imaging arrays has been optimized at 93 GHz. The imaging arrays consist of several silicon wafers into which arrays of pyramidal horns are etched chemically.
Guo, Yong +4 more
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