Results 21 to 30 of about 4,737,935 (303)

Multi-Band Analogue Electromagnetically Induced Transparency in DoubleTuned Metamaterials

Nanomaterials, 2021
A multi-band analogue electromagnetically induced transparency (A-EIT) metamaterial is proposed. The structure is composed of liquid crystal (LC) layer and a graphene strips layer on both sides of silicon dioxide.
Wei Huang, Ningye He, Renxia Ning, Zhenhai Chen   +3 more
doaj   +1 more source

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

Design of Integrated Duplexing and Multi-Band Filtering Slot Antennas

IEEE Access, 2020
In this paper, a duplexing antenna and two multi-band filtering antennas using resonator loaded slot are presented. The loaded slot can be flexibly designed as a dual-band or a tri-band antenna by changing the number of the loaded resonator.
Ya Xie, Fu-Chang Chen, Jian-Feng Qian
doaj   +1 more source

Combined signal‐interference/split‐type microwave multi‐band bandpass filters

IET Microwaves, Antennas & Propagation, 2023
Two classes of RF/microwave planar quad‐band bandpass filters (BPFs) that simultaneously exploit transversal signal‐interference and multi‐passband‐splitting mechanisms are reported.
Mohamed Malki, Li Yang, Roberto Gómez‐García   +2 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-view image coding with wavelet lifting and in-band disparity compensation [PDF]

, 2005
This paper presents a novel framework to achieve scalable multi-view image coding. As open loop operation, the wavelet lifting scheme for geometric filtering has been exploited to overcome the limitation of SNR scalability and to attain view scalability.
Anantrasirichai, N, C.N. Canagarajah, Canagarajah, CN, D.R. Bull, N. Anantrasirichai, Bull, DR   +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

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