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Maximum Gain, Effective Area, and Directivity [PDF]
IEEE Transactions on Antennas and Propagation, 2018 Fundamental bounds on antenna gain are found via convex optimization of the current density in a prescribed region. Various constraints are considered, including self-resonance and only partial control of the current distribution.
Capek, Miloslav, Gustafsson, Mats
core +4 more sources
Design and Performance Analysis of a Triple-band Rectangular Slot Microstrip Patch Antenna for Wi-Fi, Wi-MAX and Satellite Applications [PDF]
International Journal of Electronics and Telecommunications, 2022 A triple-band microstrip patch antenna is presented in this article with detail investigation of its working mechanism and performance characteristics. The antenna consists of a rectangular slot on the patch to achieve multiband operation. Three distinct
Md. Biplob Hossain, Md. Faruque Hossain
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Frontiers in Earth Science, 2021 Rupture directivity, implying a predominant earthquake rupture propagation direction, is typically inferred upon the identification of 2D azimuthal patterns of seismic observations for weak to large earthquakes using surface-monitoring networks. However,
José Ángel López-Comino +9 more
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Design and Implementation of a Composite Hydrophone of Sound Pressure and Sound Pressure Gradient
Micromachines, 2021 The bionic cilium MEMS vector hydrophone has the characteristics of low power consumption, small volume, and good low-frequency response. Nevertheless, there exists the problem of left–right ambiguity in the azimuth estimation of a single hydrophone.
Guojun Zhang +6 more
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Design and Simulation of 2×2 Micro Strip Circular Patch Antenna Array at 28 GHz for 5G Mobile Station Application [PDF]
International Journal of Electronics and Telecommunications, 2022 This paper proposes the design and simulation of 2×2 circular patch antenna array working at 28 GHz by using four inset feed micro strip circular patch antennas to achieve beam forming with directivity around 13dB which is required to overcome part of ...
Salim Abdullah Hasan +3 more
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Enhanced emission directivity from asymmetrically strained colloidal quantum dots
Science Advances, 2022 Current state-of-the-art quantum dot light-emitting diodes have reached close to unity internal quantum efficiency. Further improvement in external quantum efficiency requires more efficient photon out-coupling.
Yang Song +7 more
semanticscholar +1 more source
Frontiers in Earth Science, 2021 On October 27, 2017, an Mw 4 earthquake occurred close to the municipality of Montesano sulla Marcellana, less than 10 km external to the concession of the largest European onshore hydrocarbon reservoir—the Val d’Agri oilfield (Southern Italy).
José Ángel López-Comino +7 more
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Cogent Engineering, 2022 In fifth-generation (5G) communication systems, the mm-wave (millimeter-wave) frequency band is a key aspect in overcoming the exponential increase in data traffic of the existing cellular networks, which requires compatible and low-profile antenna ...
Ayane L. Goshu +2 more
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IEEE Open Journal of Antennas and Propagation, 2023 This paper introduces an efficient approach for compact, wideband and supergain arrays design using artificial neural network (ANN) based optimization.
Abdellah Touhami +2 more
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Micromachines, 2022 This paper presents a longitudinal–torsional transducer for use during the ultrasonic vibration-assisted milling (UVAM) of honeycomb aramid material.
Mingxing Zhang +4 more
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