Results 11 to 20 of about 185,245 (299)
MEMS Tunable Frame Antennas Enabling Carrier Aggregation at 600 Mhz
IEEE Access, 2020 The goal of this paper is to propose a tunable antenna system, that aims to cover the LTE low band (699–960 MHz), medium band (1710–2100 MHz) and high band (2100–2690 MHz), as well as the 600 MHz bands by tuning.
Carla Di Paola +4 more
doaj +1 more source
Evaluation of 8-Channel Radiative Antenna Arrays for Human Head Imaging at 10.5 Tesla
Sensors, 2021 For human head magnetic resonance imaging at 10.5 tesla (T), we built an 8-channel transceiver dipole antenna array and evaluated the influence of coaxial feed cables.
Myung Kyun Woo +9 more
doaj +1 more source
Design and Study of an mmWave Wearable Textile Based Compact Antenna for Healthcare Applications
International Journal of Antennas and Propagation, 2021 In this study, the design of a compact and novel millimeter wave cotton textile-based wearable antenna for body-centric communications in healthcare applications is presented.
Mohammad Monirujjaman Khan +6 more
doaj +1 more source
Harmonic Reaction Inductive Folded Dipole Antenna for Direct Connection With Rectifier Diodes
IEEE Access, 2022 In this paper, we present a harmonic reaction inductive folded dipole antenna (FDA) for a highly efficient rectenna which is close to the fundamental limitation on efficiency.
Akihiko Mugitani +4 more
doaj +1 more source
A Substrate Integrated Waveguide-Based W-Band Antenna for Microwave Power Transmission
Micromachines, 2022 A W-band slot array antenna based on a substrate integrated waveguide (SIW) for microwave power transmission (MPT) is proposed in this paper. By size optimization, the transition from the rectifier element to the antenna is limited to a small size.
Liang Liu +6 more
doaj +1 more source
High Gain Triple-Band Metamaterial-Based Antipodal Vivaldi MIMO Antenna for 5G Communications
Micromachines, 2021 This paper presents a miniaturized dual-polarized Multiple Input Multiple Output (MIMO) antenna with high isolation. The antenna meets the constraints of sub-6 GHz 5G and the smartphones’ X-band communications.
Tale Saeidi +7 more
doaj +1 more source
Micromachines, 2022 Radiation with high-efficiency, large-bandwidth, and uniform magnetic field radiation antennas in a large field of view are the key to achieving high-precision wide-field imaging.
Zhiming Li +5 more
doaj +1 more source
IEEE Access, 2023 A dual-polarized paralle-plate waveguide slot array antenna operating at 24.5 GHz band is proposed in this paper. The radiating panel using a 5mm-thick expanded dielectric substrate ( $\epsilon _{r}=1.12$ ) consists of two orthogonally oriented $20 ...
Huanqian Xiong +2 more
doaj +1 more source
A spectrum efficient cellular base-station antenna architecture [PDF]
, 1992 A concept is considered according to which using the spatial distribution of the users acquired by an array on reception, an antenna system can dynamically assign single narrow beams to illuminate lone mobiles, and broad beams to the numerous groupings ...
Beach, MA, McGeehan, JP, Swales, SC
core +2 more sources
Energy efficiency of transmit diversity systems under a realistic power consumption model [PDF]
, 2013 We compare the downlink energy efficiency of spatial diversity multiple transmit antenna schemes. We determine the minimum required transmit power for a given outage probability.
Brante, G. +3 more
core +1 more source