Zobrazeno 1 - 10
of 874
pro vyhledávání: '"Zhi Ning Chen"'
Publikováno v:
Electromagnetic Science, Vol 2, Iss 2, Pp 1-12 (2024)
A henge-like metaring (HMR) is proposed for improving the radiation pattern roundness of monopole antennas off-center mounted on a finite ground by localizing the radiation from the monopole and suppressing the scattering by the ground. The improved
Externí odkaz:
https://doaj.org/article/196ba8fb72704f0684498be5962c4753
Autor:
Zhi Ning CHEN
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 17, Iss 5, Pp 45-51 (2022)
The development of antenna technology has always been restricted by its essential physical limits, but the advancement of artificial structures with unique electric properties, namely metamaterials, offers great opportunities for improving the perfor
Externí odkaz:
https://doaj.org/article/53fdfde54b8f4a2dbca13e86d1ca894b
Publikováno v:
IEEE Access, Vol 8, Pp 43336-43343 (2020)
A full-passband linear-phase band-pass filter (BPF) equalized with negative group delay circuits (NGDC) is proposed. The NGDCs are utilized to suppress the salient group delay at the edge of the passband of the traditional BPF for achieving the full-
Externí odkaz:
https://doaj.org/article/e0f3ea5e29a9481f8fb0c3867ff2ae8c
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
Externí odkaz:
https://doaj.org/article/751bdab8b05345d189101d93aa30c2fa
Publikováno v:
IEEE Access, Vol 6, Pp 52877-52888 (2018)
This paper presents a new type of miniaturized base station antenna array, which consists of a metal reflector, six upper-band dipoles, and a couple of ladder sidewalls, operating over 1.71-2.69 GHz (DCS/PCS/UMTS/LTE). Meanwhile, this paper also prop
Externí odkaz:
https://doaj.org/article/43e1766bf5a948579598386b3eaa6c7c
Autor:
Shilie Zheng, Ruofan Dong, Zhuofan Zhang, Xianbin Yu, Xiaofeng Jin, Hao Chi, Zhi Ning Chen, Xianmin Zhang
Publikováno v:
IEEE Access, Vol 5, Pp 25377-25384 (2017)
The performances of plane spiral orbital angular moment (OAM)-based MIMO (PSOAM-MIMO) systems are investigated in a non-line-of-sight (NLoS) channel. Two analytical models, known as specular reflection model and circular scattering model, are applied
Externí odkaz:
https://doaj.org/article/ce6579b9709b4292a920991d8e08f74a
Autor:
Camilo Libedinsky, Rosa So, Zhiming Xu, Toe K Kyar, Duncun Ho, Clement Lim, Louiza Chan, Yuanwei Chua, Lei Yao, Jia Hao Cheong, Jung Hyup Lee, Kulkarni Vinayak Vishal, Yongxin Guo, Zhi Ning Chen, Lay K Lim, Peng Li, Lei Liu, Xiaodan Zou, Kai K Ang, Yuan Gao, Wai Hoe Ng, Boon Siew Han, Keefe Chng, Cuntai Guan, Minkyu Je, Shih-Cheng Yen
Publikováno v:
PLoS ONE, Vol 11, Iss 11, p e0165773 (2016)
Individuals with tetraplegia lack independent mobility, making them highly dependent on others to move from one place to another. Here, we describe how two macaques were able to use a wireless integrated system to control a robotic platform, over whi
Externí odkaz:
https://doaj.org/article/2db6d9ccaaad49aea7ca6359da005a5e
Publikováno v:
International Journal of Antennas and Propagation, Vol 2008 (2008)
Parametric study of the impedance and radiation characteristics of a dual elliptically tapered antipodal slot antenna (DETASA) is undertaken in this paper. Usually, the performance of the DETASA is sensitive to the parameters, the effects of major ge
Externí odkaz:
https://doaj.org/article/f629e6fadbe74f3bbabbba8613a0b2d8
Publikováno v:
International Journal of Antennas and Propagation, Vol 2007 (2007)
A broadband circularly polarized stacked probe-fed antenna suitable for UHF RFID applications is presented and studied. The proposed antenna is fed by two probes which are connected to a hybrid coupler. Two parasitic patches are stacked above a prima
Externí odkaz:
https://doaj.org/article/2d70a0f2a8554459aa21f5c8bf8da722
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 22:1030-1034