Results 41 to 50 of about 1,471,692 (268)

A wideband 0.9–2.4 GHz 25 W high‐efficiency Gallium Nitride radio frequency power amplifier

open access: yesEngineering Reports, 2021
In this work, a 0.9–2.4 GHz, 25 W output power, radio frequency (RF) power amplifier based on Class‐E switchmode topology has been analyzed. A load‐pull simulation method is used to optimize the power performance in the operating band.
Tanghid B. Rashid, Heather Song
doaj   +1 more source

Unheard and Under‐Supported: Health‐Related Quality of Life in Children, Adolescents, and Young Adults With Sickle Cell Disease

open access: yesPediatric Blood &Cancer, EarlyView.
Abstract Background Sickle cell disease (SCD) is an autosomal recessive hemoglobinopathy affecting millions of individuals worldwide. The clinical expression and psychosocial burden of SCD vary widely across geographical, cultural, and healthcare system contexts, underscoring the need for setting‐specific approaches to assessment.
Desiré Fantasia   +7 more
wiley   +1 more source

A Compact Dual-Polarized Vivaldi Antenna with High Gain for Tree Radar Applications

open access: yesSensors
A dual-polarized compact Vivaldi antenna with high gain performance is proposed for tree radar applications. The proposed design introduces an array configuration consisting of two pairs of two Vivaldi elements to optimize the operating bandwidth and ...
Kaixuan Cheng   +5 more
doaj   +1 more source

An All-Metal High-Gain Radial-Line Slot-Array Antenna for Low-Cost Satellite Communication Systems

open access: yesIEEE Access, 2020
This article presents a method to produce a highly directive circularly polarized radiation beam (gain>35 dBi) from an all-metal circularly polarized radial-line slot array (RLSA) antenna.
Mst Nishat Yasmin Koli   +3 more
doaj   +1 more source

A LEVEL SHIFTER ANTENNA FOR HIGH SPEED COMMUNICATION USING WILSON CURRENT MIRROR

open access: yesICTACT Journal on Communication Technology, 2022
A feed system that has been presented consists of high-gain antenna arrays that each have six slots and are arranged on a single substrate layer. This system makes use of a phase shifter that is not frequencydependent and a power splitter that is ...
V.J. Arulkarthick
doaj   +1 more source

Imaging of High‐Risk Neuroblastoma: Recommendations From SIOPEN Radiology and Nuclear Medicine Specialty Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij   +11 more
wiley   +1 more source

A Compact Slotted Waveguide Array Antenna With a Cubic Post Radiator for Aerial Vehicle Applications

open access: yesIEEE Access
This study presents a compact high-gain antenna, designed to be mounted on unmanned aerial vehicles, for millimeter-wave band applications. This antenna combines a slotted waveguide array (SWA) with a cubic post radiator (CPR) for performance enhancement.
Ka-Hyeon Lee   +3 more
doaj   +1 more source

Microwave Breast Phantom Measurement System With Compact Side Slotted Directional Antenna

open access: yesIEEE Access, 2017
In this paper, a new, complete, and comprehensive breast phantom measurement system is presented. A side slotted vivaldi antenna is used for breast phantom measurement.
Mohammad Tariqul Islam   +4 more
doaj   +1 more source

Effects of Cancer Treatment on Somatosensory and Nociceptive Processing in Children and Adolescents: A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Chemotherapy‐induced peripheral neuropathy remains a major complication in pediatric cancer, with disrupted somatosensory and nociceptive processing being a key aspect. This review synthesizes empirical studies on alterations in somatosensory and nociceptive processing in children and adolescents with cancer.
Julia Schweiger   +4 more
wiley   +1 more source

SIW Multibeam Antenna Array at 30 GHz for 5G Mobile Devices

open access: yesIEEE Access, 2019
This paper presents a new phased array of substrate integrated waveguide (SIW) monopoles, characterized by simple structure, high gain, and large coverage, resulting as a good candidate for next 5G mobile handsets.
Carla Di Paola   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy