Results 31 to 40 of about 1,523,975 (218)
IEEE Open Journal of Antennas and PropagationA wideband, high gain circularly polarized (CP) metasurface (MTS) based slot antenna is presented. The designed nonuniform slots provide wider bandgap regions and extra degree of freedom in tuning to obtain wider impedance bandwidth through improved mode
Komal Iqbal +2 more
doaj +1 more source
Analysis and design of Minkowski-like fractal antennas
Dianzi Jishu Yingyong, 2019 In order to achieve that an antenna works in ISM2.4G(2.4～2.483 5 GHz), Bluetooth,GPS,WLAN(2.4～2.48 GHz) and other multi-frequency band at the same time，the Minkowski fractal microstrip antenna based on the fractal theory is designed, and the original ...
Tang Zhen, Wang Lixin, Tang Tianyu
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Combined oral contraceptive (COC) use in obese adult women dramatically increases the relative risk of developing a pulmonary embolism (PE). The risk of a PE in obese adolescent females taking contraceptives is currently unknown. The purpose of this investigation was to determine the effect of body mass index (BMI) and contraceptive
John Puetz, Joanne Salas
wiley +1 more source
A wideband 0.9–2.4 GHz 25 W high‐efficiency Gallium Nitride radio frequency power amplifier
Engineering 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
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian +13 more
wiley +1 more source
A Compact Dual-Polarized Vivaldi Antenna with High Gain for Tree Radar Applications
SensorsA 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
IEEE 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
ICTACT 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
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan +1 more
wiley +1 more source
A Compact Slotted Waveguide Array Antenna With a Cubic Post Radiator for Aerial Vehicle Applications
IEEE AccessThis 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