Results 31 to 40 of about 1,588,999 (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
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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
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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
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani +7 more
wiley +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
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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
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Survivors of pediatric brain tumors (PBTs) can experience long‐term social difficulties, impacting quality of life. Beyond medical and environmental factors, family psychosocial risk may play a role in social outcomes by shaping the caregiving environment and may provide intervention options.
Renske H. Houben +4 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
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk +10 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