Results 1 to 10 of about 1,854,391 (268)

A Design of a Small-Aperture Low-Profile Omnidirectional Conformal Antenna [PDF]

open access: yesMicromachines
In this article, a small-aperture, low-profile, and omnidirectional conformal antenna is proposed which can be utilized on space-limited equipment platforms such as airplanes, ships, and vehicles.
Jieying Bai   +4 more
doaj   +2 more sources

Design of High-Sensitivity Flexible Low-Profile Spiral Antenna Sensor for GIS Built-in PD Detection

open access: yesSensors, 2023
Spiral antenna sensors are commonly used in partial discharge (PD) ultra-high frequency (UHF) detection in gas-insulated switchgears (GISs). However, most of the existing UHF spiral antenna sensors are based on a rigid base and balun, such as FR-4.
Xukun Hu   +4 more
doaj   +1 more source

UWB Low-Profile Boat-Radiator Antenna (BRA) with Dual C-Shape Co-Radiative Ground for Multi-Standard Communication Networks

open access: yesSensors, 2020
Multiple standard communication networks operate in the frequency band of 1.8–6 GHz, which makes lots of antennas available in the limited space. To solve the problem of interference and improve the performance of these antennas, an ultra-wideband (UWB ...
Chungang Zhang, Yongjun Xie, Legen Dai
doaj   +1 more source

Repurposing medical devices as “button” esophagostomy tubes for extended nutritional support

open access: yesJournal of Veterinary Internal Medicine, 2022
Background Esophagostomy tubes (E‐tubes) are widely utilized for extended nutritional support in dogs and cats. Problems associated with their use include the unwieldy excess (10‐20 cm) of external tubing, constant need for neck wraps and necessity for ...
Melanie D. Craven
doaj   +1 more source

A High Efficiency Transmitarray Using Two-Layer Elements Etched on Compound Substrate

open access: yesIEEE Access, 2022
In this paper, a novel double-layer transmitarray antenna operating in X-band with high efficiency is presented. Different from the traditional transmitarray element design, the proposed transmitarray element uses a compound substrate which is composed ...
Chao Tian   +4 more
doaj   +1 more source

Low-Profile and Wideband Circularly Polarized Magneto-Electric Dipole Antenna Excited by a Cross Slot

open access: yesIEEE Access, 2022
In this article, we present the design of a low-profile circularly polarized (CP) magneto-electric (ME) dipole antenna with enhanced CP bandwidth properties. The ME dipole antenna is excited by a simple microstrip line aperture-coupled feeding structure.
Son Trinh-Van   +3 more
doaj   +1 more source

A Compact Wideband Circular Polarized Fabry-Perot Antenna Using Resonance Structure of Thin Dielectric Slabs

open access: yesIEEE Access, 2018
A wideband small-footprint circularly polarized Fabry-Perot resonator antenna is presented in this paper. The design employs a partial reflecting surface (PRS) consisting of thin homogeneous dielectric slabs separated by a small air gap.
Nghia Nguyen-Trong   +3 more
doaj   +1 more source

A Low Profile, Ultra-Lightweight, High Efficient Circularly-Polarized Antenna Array for Ku Band Satellite Applications

open access: yesIEEE Access, 2017
A novel low-profile, ultra-lightweight, high-efficient circularly polarized (CP) planar patch antenna array is reported for Ku-band satellite TV reception applications. The basic radiating element of the antenna array is realized by a 2 × 2 corner-
Jianquan Huang   +5 more
doaj   +1 more source

Resonance-Based Reflector and Its Application in Unidirectional Antenna with Low-Profile and Broadband Characteristics for Wireless Applications

open access: yesSensors, 2016
In this research, the novel concept of a resonance-based reflector (RBR) was proposed, and a ring-shaped RBR was utilized to design a unidirectional antenna with low-profile and broadband characteristics.
Lin Peng   +4 more
doaj   +1 more source

Profile of Scott W. Lowe [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
As a graduate student at the Massachusetts Institute of Technology, Scott Lowe became interested in cancer genetics. The phenomenon that drew his interest was called oncogene cooperation—the idea that it takes multiple oncogenes working together to turn a normal cell into a tumor cell.
openaire   +2 more sources

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