Results 31 to 40 of about 271,833 (288)

A multi band mini printed omni directional antenna with v-shaped for RFID applications [PDF]

, 2011
This paper presents a mini multi-band printed omni-directional antenna with v-shaped structure for radio frequency identification (RFID) applications. The proposed multi-band antenna is developed from the initial v-shaped design which is only capable of ...
Abd. Rahman, Tharek, Abdul Rahim, Sharul Kamal, Evizal, Abdul Kadir, Jamlos, Mohd. Faizal   +3 more
core   +1 more source

Investigation of a Flexible Downstream Scheme for Sampling Rate and Bandwidth Reduction in Short Reach Communication Systems

IEEE Access, 2020
We demonstrate a cost- and spectrum-effective orthogonal frequency-division multiple access passive optical network downstream scheme based on multi-band and modified sub-Nyquist sampling over transmission reach of 20km.
Yupeng Li, Jiawei Han, Liang Han, Cheng Ju   +3 more
doaj   +1 more source

Development Review of Broadband and Multi-Band Outphasing Power Amplifiers for High-Efficiency Amplification

Energies, 2023
Outphasing power amplifiers (OPAs) can be used in wireless information and power transfer systems due to their excellent conversion efficiency. With the rapid advancement of technology, there is a strong demand for OPAs to achieve wideband and multi-band
Yu Zhang, Chunyu Hu, Xia Liu, Jun Wang, Wenxu Zhong, Ping Tian, Shuai Lin, Weimin Shi   +7 more
doaj   +1 more source

A New Family of Integrable Extended Multi-band Hubbard Hamiltonians

, 1997
We consider exactly solvable 1d multi-band fermionic Hamiltonians, which have affine quantum group symmetry for all values of the deformation. The simplest Hamiltonian is a multi-band t-J model with vanishing spin-spin interaction, which is the ...
A. AVAKYAN, A. SEDRAKYAN, J. AMBJØRN, Rittenberg V., T. HAKOBYAN   +4 more
core   +1 more source

Multi-band optical micro-variability observations of BL Lacertae [PDF]

, 2002
We have observed BL Lacertae in the B, R and I bands for 2 nights in July, 1999, and 3 nights in July, 2001. The observations resulted in almost evenly sampled light curves, with an average sampling interval of ~5 min.
Cardelli, Chiaberge, Chiappetti, Clements, Corbett, Edelson, Edelson, Fiorucci, Fossati, Fossati, Fukugita, Ghisellini, Ghosh, I. E. Papadakis, J. Papamastorakis, Kataoka, Markowitz, Matsumoto, Miller, Nandra, Nesci, P. Boumis, Papadakis, Peterson, Pian, Racine, Ravasio, Ryter, Sambruna, Scarpa, Schlegel, Smith, Speziali, Urry, V. Samaritakis, Vermeulen, Vermeulen, Villata, Zhang   +38 more
core   +2 more sources

Multi-band slow light metamaterial

Optics Express, 2012
In this paper, a multi-band slow light metamaterial is presented and investigated. The metamaterial unit cell is composed of three cut wires of different sizes and parallel to each other. Two transparency windows induced by two-two overlaps of absorption bands of three cut wires are observed.
Lei, Zhu, Fan-Yi, Meng, Jia-Hui, Fu, Qun, Wu, Jun, Hua   +4 more
openaire   +2 more sources

Multi-Band Electromagnetically-Induced-Transparency Metamaterial Based on the Near-Field Coupling of Asymmetric Split-Ring and Cut-Wire Resonators in the GHz Regime

Crystals, 2021
A metamaterial (MM), mimicking electromagnetically-induced transparency (EIT) in the GHz regime, was demonstrated numerically and experimentally by exploiting the near-field coupling of asymmetric split-ring and cut-wire resonators.
Man Hoai Nam, Vu Thi Hong Hanh, Nguyen Ba Tuong, Bui Son Tung, Bui Xuan Khuyen, Vu Dinh Lam, Liang Yao Chen, Young Pak Lee   +7 more
doaj   +1 more source

Multi-band Eilenberger theory of superconductivity: Systematic low-energy projection

, 2016
We propose the general multi-band quasiclassical Eilenberger theory of superconductivity to describe quasiparticle excitations in inhomogeneous systems.
Nagai, Yuki, Nakamura, Hiroki
core   +1 more source

Multitask bidirectional digital coding metasurface for independent controls of multiband and full-space electromagnetic waves

Nanophotonics, 2022
Full-space metasurfaces demonstrate powerful abilities in manipulating electromagnetic (EM) waves, but most of them are usually single band. Here, a multiband bidirectional digital coding metasurface is proposed for multiple tasks, which can achieve ...
Wu Liang Wei, Ma Hui Feng, Gou Yue, Wu Rui Yuan, Wang Zheng Xing, Xiao Qiang, Cui Tie Jun   +6 more
doaj   +1 more source

Multi-Color Coronagraph Experiment in a Vacuum Testbed with a Binary Shaped Pupil Mask

, 2011
We conducted a number of multi-band coronagraph experiments using a vacuum chamber and a binary-shaped pupil mask which in principle should work at all wavelengths, in the context of the research and development on a coronagraph to observe extra-solar ...
Abe, Lyu, Enya, Keigo, Haze, Kanae, Kotani, Takayuki, Nakagawa, Takao, Sato, Toshimichi, Yamamuro, Tomoyasu   +6 more
core   +1 more source