Results 31 to 40 of about 4,302 (268)
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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IEEE Access, 2022 Radar-based algorithms for electromagnetic (EM) imaging are developed based on the assumption that EM has a local planar wave front inside the imaging domain.
Azin S. Janani +3 more
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Wide dipole antennas for wireless powering of miniaturised bioelectronic devices
Sensing and Bio-Sensing Research, 2020 Biomedical electronic implants require a power source to operate. Miniaturised implants can preclude batteries and as implant dimensions reduce further, inductive power transfer no longer becomes the optimum strategy for wireless power delivery.
Ammar Aldaoud +9 more
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A broadband dual‐polarised antenna with L‐shaped strips for long‐term evolution/5G application
IET Microwaves, Antennas & Propagation, 2023 A broadband dual‐polarised antenna with L‐shaped strips for long‐term evolution (LTE)/5th generation mobile networks (5G) is proposed in this article. Based on the principle of multi‐mode resonance, wide bandwidth is achieved with L‐shaped strips and H ...
Rui Wu +3 more
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Optimum Antenna Characteristics for Maximally Harvesting Ambient RF Energy
IEEE Open Journal of Antennas and Propagation, 2022 This paper investigates the best antenna characteristics to harvest ambient RF waves maximally. The proposed approach analyzes and compares key design aspects, including multi-polarization, multi-port, multi-band, omnidirectional, quasi-isotropic, and ...
Constant M. A. Niamien
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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
openaire +1 more source
Meshed High-Impedance Matching Network-Free Rectenna Optimized for Additive Manufacturing
IEEE Open Journal of Antennas and Propagation, 2020 Additive manufacturing using direct-write or screen printing represent low-waste methods for fabricating antennas on low-cost flexible substrates. To realize rectennas using low-resolution printing methods, high-impedance antennas with simple printable ...
Mahmoud Wagih +2 more
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A hybrid time-domain model for pulsed terahertz dipole antennas [PDF]
Journal of the European Optical Society-Rapid Publications, 2009 In this paper we study the effect of the length of dipole antennas on the spectrum of the radiated THz signal in pulse-excited opto-electronic terahertz systems.
Ezdi K. +7 more
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An Optimal Electric Dipole Antenna Model and Its Field Propagation
International Journal of Antennas and Propagation, 2016 An optimal electric dipole antennas model is presented and analyzed, based on the hemispherical grounding equivalent model and the superposition principle.
Yidong Xu +4 more
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