Switchable directional transmissions

Author: nduu

August undefined, 2024

SpletAbstract: A platform-based, electrically small antenna (ESA) operating in the high-frequency (HF) band with switchable directional radiation patterns in the azimuth plane is presented. The antenna is designed to exploit three orthogonal characteristic modes of a mid-size, ground-based platform. SpletIt is demonstrated that the SPIDA prototype concentrates the radiated power only in given directions, thus enabling increased communication range at no additional energy cost and better correspondence between the link performance and common link quality estimators. We present the real-world evaluation of SPIDA, an electronically switched directional …

Active terahertz directional coupler based on phase

SpletWe present DPT: a wireless sensor network protocol for bulk traffic that uniquely leverages electronically switchable directional (ESD) antennas. Bulk traffic is found in several … Splet07. okt. 2024 · We demonstrate switchable unidirectional propagation of slow waves of coupling within a metamaterial array of strongly coupled elements. how long can glofish live

WO2024044218A1 - Directional channel access using a narrow …

Splet07. okt. 2024 · Generalising our method of unidirectional waveguiding to a diatomic MI array featuring both forward-wave and backward-wave dispersion branches, switchable unidirectional signal propagation is ... SpletIn this paper, a new beam-switchable antenna is designed with a planar architecture based on the Yagi-Uda design me-thodology [2, 10, 11]. The proposed antenna is able to control bi-directional beams by switching the roles of parasitic antenna elements from reflectors to directors and vice versa. The func- SpletDirectional Transmissions and Receptions for High-throughput Bulk Forwarding in Wireless Sensor Networks. In Proc. of SenSys, 2015. [8] K. Witrisal et al. High-Accuracy … how long can goldfish go without food

Superphobicity/philicity Janus Fabrics with Switchable, …

Poster: Switchable Directional Antenna System for UWB-based …

Splet(Directional Pipelined Transmission): a multi-hop wireless protocol we expressly conceive to support bulk tra c using ESD antennas. At the core of DPT is the use of multiple disjoint paths for multi-hop routing and a custom approach to synchronize packet transmissions all the way up to the data sink. The protocol operation unfolds in several ... Splet12. avg. 2024 · Surfaces With Switchable Wettability Thermal/Photothermal Response Benefiting from temperature responsive shape memory polymer (SMP) materials, Cheng et al. have successfully developed thermal response surfaces that tune superhydrophobic characters between isotropic and anisotropic state ( Cheng et al., 2024 ). how long can grape vines liveSplet28. jul. 2024 · ABSTRACT. Directional sound emission and reception are important in many practical applications, such as acoustic imaging, communications, and structural health … how long can goose live

"SpletAs this requires protocols to incorporate some form of adaptation, we present an intentionally simple and yet efficient mechanism for selecting the best antenna direction at run-time with an energy overhead below 2 standard omni-directional transmissions. Keywords. Wireless Sensor Network; Receive Signal Strength; Antenna Direction; Link ... " - Switchable directional transmissions

Switchable directional transmissions

Frontiers Bioinspired Surfaces With Switchable Wettability

SpletThe use of directional antennas for wireless communications brings several benefits, such as increased communication range and reduced interference. One example of directional … Splet28. okt. 2024 · Bioinspired smart surfaces with switchable wettability and optical performance have aroused much attention in the past few years. However, almost all reported surfaces focused on regulating single surface function. In this work, inspired by the butterfly wings, a novel superhydrophobic surface with …

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SpletWe present DPT: a wireless sensor network protocol for bulk trac that uniquely leverages electronically switchable di-rectional (ESD) antennas. Bulk trac is found in several … http://www.diva-portal.org/smash/record.jsf?pid=diva2:867942

Splet16. okt. 2013 · Herein we demonstrate that switchable, spontaneous, directional-transport ability to both water and oil fluids can be created on fabric materials through wet-chemistry coating and successive UV ... SpletThe encoding metasurface enables the simultaneous control of opposite directional transmissions with distinct functions solely by introducing a rotation and adjusting the geometrical parameters on the structure. The advanced functionalities realized in the two directions go far beyond previous attempts for unitary directional functions.

SpletDirectional antennas, including ESD ones, can shape their lobe both when transmitting and when receiving. In the latter, the antenna increases the gain to handle transmissions from … SpletDOI: 10.3233/JHS-130479 Corpus ID: 13204132; A directional MAC for switchable directional antennas to enhance throughput in crowded infrastructure wireless networks

Splet01. feb. 2015 · Once the directional couplers can be actively controlled by the external field, such as temperature, optical or electrical field, these devices can realize more powerful …

Splet21. jun. 2024 · We demonstrate a switchable two-dimensional phase grating in blue phase liquid crystal (BPLC), which is fabricated by sawtooth in-plane-switch (IPS) electrodes. They are used to generate the horizontal electric field on a single indium-tin-oxide (ITO) glass substrate and, as a result, the 1-D and 2-D phase gratings can be mutual switched via … how long can governors serveSpletPoster: Switchable Directional Antenna System for UWB-based Internet of Things Applications. Authors: Bernhard Großwindhager ... how long can gout pain lastSpletWe present DPT: a wireless sensor network protocol for bulk traffic that uniquely leverages electronically switchable directional (ESD) antennas. Bulk traffic is found in several scenarios and supporting protocols based on standard antenna technology … how long can grapes stay in the freezerSplet15. mar. 2024 · The use of directional antennas for wireless communications brings several benefits like increased communication range and reduced interference. One example of … how long can granola bars lastSplet01. feb. 2015 · Once the directional couplers can be actively controlled by the external field, such as temperature, optical or electrical field, these devices can realize more powerful … how long can greens be refrigeratedSpletA sprag clutch goes by many names: One-way bearing, freewheel clutch, cam clutch, overrunning clutch. Whatever you call it, sprag clutches are a critical mechanical device in many heavy industrial applications—from automatic transmissions to torque converters, industrial winches to helicopter rotors. The Design & Functionality of a Sprag Clutch how long can green peppers be frozenSpletSwitchable Wideband Directional Coupler IC BGC100GN6 Directional Coupler for RF Front Ends in Cellular Handheld Devices About this document Scope and purpose This … how long can grasshoppers live without water