Results 21 to 30 of about 93,179 (300)
Hybrid Semiconductor Nanowire–Metallic Yagi-Uda Antennas [PDF]
Nano Letters, 2015 We demonstrate the directional emission of individual GaAs nanowires by coupling this emission to Yagi-Uda optical antennas. In particular, we have replaced the resonant metallic feed element of the nanoantenna by an individual nanowire and measured with the microscope the photoluminescence of the hybrid structure as a function of the emission angle by
Ramezani, M. +7 more
openaire +2 more sources
Broadband circularly polarized antennas for UHF SATCOM [PDF]
, 2011 Novel circularly polarized (CP) antenna configurations derived from Moxon type antenna (bent dipole element over a ground plane) for broadband VHF SATCOM applications.
Manzhura, Oksana +3 more
core +1 more source
International Journal of Antennas and Propagation, 2012 The-hybrid dielectric resonator antenna consisted of a cylindrical high-permittivity dielectric resonator, a rectangular slot, and two-rectangular patches were implemented. The hybrid dielectric resonator antenna had three resonant frequencies. The lower,
Yih-Chien Chen
doaj +1 more source
Codebook Based Hybrid Precoding for Millimeter Wave Multiuser Systems [PDF]
, 2017 In millimeter wave (mmWave) systems, antenna architecture limitations make it difficult to apply conventional fully digital precoding techniques but call for low cost analog radio-frequency (RF) and digital baseband hybrid precoding methods.
He, Shiwen +4 more
core +2 more sources
A 3-D Meandered Probe-Fed Dual-Band Circularly Polarized Dielectric Resonator Antenna
Sensors, 2018 A dual-band circularly polarized (CP) dielectric resonator antenna (DRA) designed on multi-layer substrates is proposed. An asymmetric C-shaped metallic strip is also incorporated into the upper side of the top substrate in the proposed design.
Amir Altaf +5 more
doaj +1 more source
Micromachines, 2023 In this paper, we proposed a multibeam switching antenna based on a low-cost reconfigurable hybrid metasurface applied for beamforming systems. The antenna consists of two parts: a microstrip feed antenna and a transmission hybrid metasurface. The latter
Lili Sheng +4 more
doaj +1 more source
4G/5G Multiple Antennas for Future Multi-Mode Smartphone Applications
IEEE Access, 2016 A hybrid antenna is proposed for future 4G/5G multiple input multiple output (MIMO) applications. The proposed antenna is composed of two antenna modules, namely, 4G antenna module and 5G antenna module.
Yong-Ling Ban +4 more
doaj +1 more source
Dual-Frequency Polarized Reconfigurable Terahertz Antenna Based on Graphene Metasurface and TOPAS
Micromachines, 2021 A hybrid dual-frequency polarized reconfigurable terahertz antenna is designed and studied. Graphene and TOPAS are employed as the polarization conversion metasurface and dielectric substrate, respectively, enabling tunable polarization conversion and ...
Jinnan Zhang +5 more
doaj +1 more source
International Journal of Antennas and Propagation, 2017 By loading two printed patches to the dielectric resonator antenna (DRA), a compact wide-band hybrid dielectric resonator antenna with enhanced gain and low cross-polarization is presented.
Feibiao Dong +3 more
doaj +1 more source
The impact of personality trait on the relationship of emotional intelligence and self-esteem [PDF]
, 2017 Fundamental science of psychology often rooted in diversity theory that touching reality of human and humanity. Theoretical solution alone may not be able to unlock the psychological issues because it is closely related to affective, cognitive and human ...
Ani, Fauziah +4 more
core +2 more sources