Results 11 to 20 of about 221,941 (298)
Programmable Chiral Radiation via Spin-Decoupled Metasurface with Integrated Compound Phases. [PDF]
Adv Sci (Weinh)A programmable spin‐decoupled metasurface integrating propagation and geometric phases enables high‐purity chiral radiation with reconfigurable emission direction. Spin‐selective radiators combined with a compound phase decoupling strategy suppress undesired components, while embedded PIN diodes allow real‐time directional control.
Song L +8 more
europepmc +2 more sources
Engineering Reports, 2020 This article presents a solution for the low gain and the poor efficiency of the on‐chip antennas (OCA). The four elements of Quasi‐Yagi‐Uda antennas (QYUA) are introduced based on the diversity technique to reduce the interference between the elements ...
Kamel S. Sultan +2 more
doaj +1 more source
A study of water-mist recirculation system for filtration and cooling effect in the kitchen hood ventilation system [PDF]
, 2020 Water-mist spray system in several heavy-duty kitchen hood canopies are installed to efficiently control the high heat loads and grease emissions produced from the cooking process and for safety purposes.
Nor Salim, Nor Adrian
core +1 more source
Microstrip-fed Triangular UWB Microstrip Antenna Based on DGS
International Journal of Applied Mathematics, Electronics and Computers, 2016 An ultra-wideband (UWB) monopole microstrip antenna is designed in this study. The design consists of a radiating triangular patch antenna (TPA) fed through a 50 Ohm microstrip transmission line (MTL) constructed over a defected ground structure (DGS). The triangular monopole well is matched to MTL with inserting a thin strip line.
Toktaş, Abdurrahim +2 more
openaire +4 more sources
Ultrawideband Vivaldi Antenna for DVB-T, WLAN, and WiMAX Applications
International Journal of Antennas and Propagation, 2014 Compact Vivaldi patch antenna with a parasitic meander line is presented in this paper. A PIN diode switch is used to connect and disconnect ultrahigh frequency band (UHF) with ultrawide bandwidth (UWB).
Dalia M. Elsheakh, Esmat A. Abdallah
doaj +1 more source
Applied Sciences, 2022 This paper presents a feasibility study for designing a floating patch antenna structure fed with a probe from a microstrip. The main premise is to eliminate the dielectric in the patch design, which is equivalent to having an air dielectric and leads to
Marcos D. Fernandez +4 more
doaj +1 more source
Single‐fed 4G/5G multiband 2.4/5.5/28 GHz antenna
IET Microwaves, Antennas & Propagation, 2019 In this study, a single‐fed printed multiband antenna for 4G/5G wireless communication systems is presented. The proposed multiband antenna consists of Franklin strip monopole antenna to cover 4G, and wireless applications (WLAN and WiMAX), and a ...
Mohammed E. Yassin +3 more
doaj +1 more source
Quality measurements of an UWB reduced-size CPW-fed aperture antenna [PDF]
, 2015 The paper presents a characterization of a compact co-planar waveguide (CPW)-fed slot loaded low return loss planar printed antenna designed for wireless communication and ultra-wideband (UWB) applications. Following a review of the antenna design, which
Ammar, M. +5 more
core +1 more source
Low SAR, Simple Printed Compact Multiband Antenna for Mobile and Wireless Communication Applications
International Journal of Antennas and Propagation, 2014 Simple multiband planar antenna for wireless communication applications is presented. The proposed antenna performs four resonant modes covering multibands of wireless standards, including LTE 700, GSM, DCS, PCS, UMTS, and LTE 2300/2500.
K. S. Sultan +2 more
doaj +1 more source
A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges
Sensors, 2020 Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers.
Yasir I. A. Al-Yasir +4 more
doaj +1 more source