Results 31 to 40 of about 3,242,183 (213)

A Wearable Self-Grounding Slit Antenna for ISM/4G/5G/Bluetooth/WLAN Applications

IEEE Access, 2023
This design proposes a self-grounding semi-circular gap dual-band flexible antenna in the context of the rapid development of wireless body area networks.
Zhen Yu, Ruirong Niu, Guodong Zhang, Runzhi Sun, Ziheng Lin, Yao Li, Xiaoying Ran   +6 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

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

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 antenna for different wireless applications [PDF]

, 2009
A small multi-band compact antenna is presented. The antenna is designed on Roger RT/duroid 5880 with dielectric constant 2.2, multi-band operations is achieved by inserting a slot on the top patch. The antenna has wide impedance bandwidth at 1.2, 1.6, 2.
AbuTarboush, HF, Nilavalan, R, H. F. AbuTarboush, Al-Raweshidy, H, R. Nilavalan, H. S. Al-Raweshidy   +5 more
core   +1 more source

Optimization-Based Design of Multi-Band Branch-Line Coupler With Arbitrary and Band-Distinct Power Division Ratios and Phase Differences

IEEE Journal of Microwaves
This paper presents a novel optimization-based procedure for designing a multi-band branch-line coupler with arbitrary output power division ratios and phase differences that are distinct at each of arbitrarily-allocated design frequencies. The procedure
Abdullah J. Alazemi, Mohamed A. Koura
doaj   +1 more source

Multi‐band joint local sparse tracking via wavelet transforms

IET Computer Vision, 2016
A novel multi‐band joint local sparse tracking algorithm via wavelet transforms is proposed in this study. The object image may contain rich information of different types; the authors use wavelet transforms to decompose the object image into some sub ...
Guang Han, Heng Luo, Jixin Liu, Ning Sun, Kun Du, Xiaofei Li   +5 more
doaj   +1 more source

Neural network modeling of bismuth-doped fiber amplifier

Journal of the European Optical Society-Rapid Publications, 2023
Bismuth-doped fiber amplifiers offer an attractive solution for meeting continuously growing enormous demand on the bandwidth of modern communication systems.
Donodin Aleksandr, de Moura Uiara Celine, Brusin Ann Margareth Rosa, Manuylovich Egor, Dvoyrin Vladislav, Da Ros Francesco, Carena Andrea, Forysiak Wladek, Zibar Darko, Turitsyn Sergei K.   +9 more
doaj   +1 more source

A Wide Dual-Band Metamaterial-Loaded Antenna for Wireless Applications [PDF]

Journal of Electromagnetic Engineering and Science, 2020
A compact, wide dual-band antenna designed to resonate at 2.25 GHz and 5.4 GHz is proposed in this paper. The proposed antenna is a monopole rectangular patch designed to operate at 5 GHz.
Sulakshana Chilukuri, Srividya Gundappagari   +1 more
doaj   +1 more source

A Compact and Multi-Coupled MIMO Antenna System Applicable to Various Electronic Devices for Sub6 GHz Design

IEEE Access
This paper presents a multi-coupled Multiple-Input Multiple-Output (MIMO) antenna system designed for laptops, routers, and base stations, characterized by multi-band capability, compact size, low manufacturing complexity, cost efficiency, and broad ...
Ming-An Chung, Shang-Jui Huang, Chia-Chun Hsu, Chia-Wei Lin   +3 more
doaj   +1 more source