Zobrazeno 1 - 10
of 491
pro vyhledávání: '"Ronghong JIN"'
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 19, Iss 4, Pp 282-289 (2024)
ObjectiveTo overcome the problem of the limitation of working bandwidth due to the phase ambiguity caused by the carrier frequency's variation in conventional time-modulated direction finding, a single-channel direction finding method with nonuniform
Externí odkaz:
https://doaj.org/article/8f25c3ca416048c588fee158ed0e3ada
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 15, Iss 6, Pp 629-643 (2021)
Abstract An approach to achieve directional low‐profile UWB antenna by omnidirectional source with a reflector, is proposed. The general theoretical model about the direction and the phase conditions between the upward and reflected field are devel
Externí odkaz:
https://doaj.org/article/73c5e30de18c4dfebf9575454ef031e5
Publikováno v:
IEEE Access, Vol 8, Pp 7466-7472 (2020)
Circularly-polarized planar antenna with a shaped pattern for airborne applications, is proposed in this letter. The proposed antenna consists of vertically-polarized formation and horizontally-polarized stubs to provide circularly-polarized configur
Externí odkaz:
https://doaj.org/article/b7f89ef808654d4e87f6ed439161bc39
Publikováno v:
Advanced Photonics Research, Vol 2, Iss 11, Pp n/a-n/a (2021)
Secret sharing is an advanced encryption method that distributes the secret information into multiple participants and only the predesigned subsets of authorized participants can recover the secret by gathering their independent subinformation. Herei
Externí odkaz:
https://doaj.org/article/27f532d09c6f43f38de052f05f26d1d2
Autor:
Kaijie Zhuang, Junping Geng, Kun Wang, Han Zhou, Yuliang Liang, Xianling Liang, Weiren Zhu, Ronghong Jin, Wenfeng Ma
Publikováno v:
IEEE Access, Vol 7, Pp 15444-15451 (2019)
A pattern reconfigurable antenna based on switchable spoof surface plasmon polaritons (SSPPs) transmission line is experimentally presented. There are two fundamental modes on traditional SSPPs transmission line, the odd mode and the even mode. In th
Externí odkaz:
https://doaj.org/article/bf234c0c9cd8465b8c6b1d36c209fe49
Publikováno v:
IEEE Access, Vol 7, Pp 62689-62694 (2019)
In this paper, we propose a new method to effectively measure orbital angular momentum (OAM) properties for long-distance transmission. Properties of OAM wavefront in terms of phase and amplitude are measured by rotating the OAM wave antenna and fixi
Externí odkaz:
https://doaj.org/article/dd0f3d626cce463faa6ba738eaad666f
Autor:
Xudong Bai, Anjie Cao, Fanwei Kong, Jingyi Qian, Shengyang Xu, Weizhong Yan, Chong He, Xianling Liang, Ronghong Jin, Weiren Zhu
Publikováno v:
IEEE Access, Vol 7, Pp 105768-105775 (2019)
In this paper, we present a Rotman lens-fed Fabry-Perot resonator antennas (FPRA) for generating multi-mode OAM beams with low beam divergence. The Rotman lens works as a beamforming network in the FPRA for the multi-mode OAM operation, significantly
Externí odkaz:
https://doaj.org/article/fe1e26a56f684a30b67082dcb91026f3
Autor:
Junping Geng, Richard W. Ziolkowski, Kun Wang, Xiaonlan Zhao, Han Zhou, Guanshen Chenhu, Xianling Liang, Ronghong Jin
Publikováno v:
IEEE Access, Vol 7, Pp 96284-96296 (2019)
A compact T-shaped feed structure (TFS) is reported that enables the realization of two types of diversity antennas: a polarization diversity antenna (PDA) and a spatial diversity antenna (SDA). Both systems have a high potential for mobile wireless
Externí odkaz:
https://doaj.org/article/ebf0789e25fa48eab4ae86ddefd30c94
Autor:
Qaisar Hayat, Junping Geng, Xianling Liang, Ronghong Jin, Sami Ur Rehman, Chong He, Haobo Wu, Hamza Nawaz
Publikováno v:
Nanomaterials, Vol 11, Iss 1, p 99 (2021)
The enhancement of optical characteristics at optical frequencies deviates with the choice of the arrangement of core-shell nanoparticles and their environment. Likewise, the arrangements of core-shell nanoparticles in the air over a substrate or in
Externí odkaz:
https://doaj.org/article/16cdf146c85e414bbaf0142d4b46175d
Autor:
Weiren Zhu, Fajun Xiao, Ming Kang, Debabrata Sikdar, Xianling Liang, Junping Geng, Malin Premaratne, Ronghong Jin
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 6, Pp 1-7 (2016)
We present a comprehensive analysis of terahertz waves propagation through a bulk MoS2 crystal slab. It is shown that broadband coherent perfect absorption can be achieved and the coherent absorptivity can be adjusted from 1.57% to 99.97% by means of
Externí odkaz:
https://doaj.org/article/1ad454e74a6b4b70ac79aa63bba5ff0a