Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Yongjiu Zhao"'
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 18, Iss 9, Pp 629-636 (2024)
Abstract An S‐band near‐field focused array is designed and implemented. Consisting of 4 × 4 metallic Vivaldi elements, the array is designed for focusing the E‐field of several kilovolts per metre within its near‐field region. To minimise t
Externí odkaz:
https://doaj.org/article/0be203ecc28f4031b2df643ad0c3946b
Publikováno v:
IEEE Access, Vol 12, Pp 14996-15006 (2024)
With the aim to enhance the phase shift range and bandwidth of the novel Inverted-E topology for single-bit and multi-bit phase shifters, this work proposes a new structure, wherein the $50~\Omega $ Main Transmission Line (MTL) in the Inverted-E topo
Externí odkaz:
https://doaj.org/article/c55749a150ad44eb801ff41174a5d02f
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract This paper proposes a functionally reconfigurable integrated structure of a Fabry–Perot (FP) antenna and wideband liquid absorber. First, a two-layer partial reflecting surface (PRS) has been designed. Then, a patch antenna is used to act
Externí odkaz:
https://doaj.org/article/f8871de39cb04299a432c5fd685f7c08
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 15, Iss 12, Pp 1545-1552 (2021)
Abstract Analytical expressions are derived for probability distributions of the three‐antenna efficiency measurement. The probability density function (PDF), the expected value, and the standard deviation are derived analytically. The Mellin trans
Externí odkaz:
https://doaj.org/article/c99df7c39f67456e8de87adcd62f69c0
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Abstract Luneburg lenses and Maxwell fisheye lenses possess distinct properties of focusing, well beyond conventional lenses made of uniform materials. In this paper, a planar broadband bifunctional Luneburg-fisheye lens synthesized by gradient aniso
Externí odkaz:
https://doaj.org/article/b6da51eef7644ed49d2994da81b456ac
Publikováno v:
IEEE Access, Vol 8, Pp 56462-56468 (2020)
In this paper, a novel method of realizing the ultra-wideband (UWB) radar cross section (RCS) reduction is proposed. We combine the chessboard structure of multi-elements which are all polarization conversion metasurface (PCM) units with random codin
Externí odkaz:
https://doaj.org/article/2f17dbe51ac44a3496971a414a91879f
Publikováno v:
IEEE Access, Vol 7, Pp 78223-78227 (2019)
The time domain (TD) response of a reverberation chamber (RC) can be obtained from the inverse Fourier transform of the measured S-parameters in the frequency domain (FD). In the measurement, the FD sampling rate should be high enough; otherwise, the
Externí odkaz:
https://doaj.org/article/136f0eecec3444fcad2841137132f6d5
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
A Weibull distribution has been proposed for the probability density function (PDF) of the magnitude of the E-field in a reverberation chamber (RC). However, the Weibull distribution has two parameters, and if the parameters are position sensitive, t
Externí odkaz:
https://doaj.org/article/0ebc5bd8458a4b42a4ef746c004723bf
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 65:17-27
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce44c32d2f57985bc263dd636c19b353
https://doi.org/10.1109/temc.2022.3223996
https://doi.org/10.1109/temc.2022.3223996
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. :1-5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b46cb82badbb4a58dfcabbc8faf7fdfa
https://doi.org/10.1109/lawp.2023.3259017
https://doi.org/10.1109/lawp.2023.3259017