Results 21 to 30 of about 1,854,391 (268)

A Low-Profile Dual-Polarized Transmitarray with Enhanced Gain and Beam Steering at Ku Band

open access: yesApplied Sciences
A low profile dual polarized transmitarray antenna, made of three identical layers, is proposed in this paper for Ku-band applications. The transmitarray comprises 22 × 22 symmetrical unit cells.
Md. Imran Khan   +7 more
doaj   +1 more source

Wideband Transmitarray Antenna Based on Two-Layer Aperture-Coupled Metasurface Unit Cell [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
In this paper, a transmitarray antenna is designed and fabricated based on a two-layer aperture-coupled patch unit cell. The unit cell is composed of two layers of dielectric substrate with a simple narrow rectangular aperture between the layers. Through
Masoumeh Darwish, Hamid Reza Hassani
doaj   +1 more source

Isolation Properties of Low-Profile Magnetorheological Fluid Mounts

open access: yesFluids, 2021
This study evaluates the stiffness and damping characteristics of low-profile magnetorheological (MR) fluid mounts (MRFM) to provide a better understanding of the vibration improvements offered by such mounts, as compared with conventional elastomeric ...
Mehdi Ahmadian, Brian M. Southern
doaj   +1 more source

Design and Analysis of a Low-profile Microstrip Antenna for 5G Applications using AI-based PSO Approach

open access: yesJournal of Telecommunications and Information Technology, 2023
Microstrip antennas are high gain aerials for low-profile wireless applications working with frequencies over 100 MHz. This paper presents a study and design of a low cost slotted-type microstrip patch antenna that can be used in 5G millimeter wave ...
Krishanu Kundu   +3 more
doaj   +1 more source

Low-Profile Dual-Band Reflector Antenna for High-Frequency Applications

open access: yesSensors, 2023
A high-gain low-profile reflector antenna with dual-band radiation ability is presented in this paper. The antenna achieves a relative 2 dB gain bandwidth of 10% around fl, and a relative 2 dB gain bandwidth of 20%, around fh, where fl and fh are the ...
Senlin Lu, Shi-Wei Qu
doaj   +1 more source

A Wideband Low-Profile Efficiency-Improved Transmitarray Antenna With Over-1-bit Phase-Shifting Elements

open access: yesIEEE Access, 2020
This paper describes a wideband, low-profile and efficiency-improved transmitarray antenna achieved by employing over-1-bit phase-shifting elements and incorporating optimized phase compensation scheme.
Fan Wu   +3 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

A Novel Planar Dual Circularly Polarized Endfire Antenna

open access: yesIEEE Access, 2019
In this paper, a novel planar dual circularly polarized (CP) endfire antenna composed of a magnetic dipole Yagi element (MDYE) and electric dipole Yagi element (EDYE) is presented for 5.8-GHz WLAN application.
Ankang Wang   +5 more
doaj   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu   +8 more
wiley   +1 more source

A Wideband Single-Fed, Circularly-Polarized Patch Antenna With Enhanced Axial Ratio Bandwidth for UHF RFID Reader Applications

open access: yesIEEE Access, 2018
A wideband single-fed, circularly-polarized patch antenna with enhanced axial ratio bandwidth for RFID reader application is proposed. The antenna consists of a modified half E-shaped patch, a near-field resonant parasitic (NFRP) patch, and four rotated ...
Junlong Li   +5 more
doaj   +1 more source

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