Zobrazeno 1 - 10
of 224
pro vyhledávání: '"JINGHUI QIU"'
Publikováno v:
Photonics, Vol 11, Iss 8, p 698 (2024)
In order to reduce the hardware cost and data acquisition time in near-field scenarios, such as airport security imaging systems, this paper discusses the layout of a multiple-input multiple-output (MIMO) radar array. In view of the existing multi-in
Externí odkaz:
https://doaj.org/article/155aa1fa1be44444ad6b04dc77f9129c
Publikováno v:
International Journal of Antennas and Propagation, Vol 2023 (2023)
In this paper, we propose a miniaturized 2.5-dimensional (2.5D) frequency selective surface (FSS) structure with high angular stability. A novel closed-loop FSS is formed by combining the Jerusalem cross (JC) structure with the conventional rectangul
Externí odkaz:
https://doaj.org/article/4366acd459a642c1ab01d4027bcf1d90
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 5, Pp 1-12 (2020)
Design and analysis of metasurface-based devices mainly rely on the ideal ray theory and full-wave simulation technique. However, for near-field and low-frequency applications, these idealized design and time-consuming full-wave simulation methods of
Externí odkaz:
https://doaj.org/article/11fd7e28ef954fa5a9839b7cb992bcad
Publikováno v:
IEEE Access, Vol 8, Pp 117833-117840 (2020)
A dual circularly polarized (CP) stacked patch antenna for Multiple-Input Multiple-Output (MIMO) WLAN applications (2.4-2.485 GHz) is presented, which exploits a square ring slot feeding technique. The antenna occupies an overall area of 96 mm x 96 m
Externí odkaz:
https://doaj.org/article/1289e7d4b5af40d083dd5639dfdfe6b9
Publikováno v:
International Journal of Antennas and Propagation, Vol 2022 (2022)
In this letter, an incident field optimization (IO) method integrated with contrast source inversion (CSI) method and multiplicative regularized CSI (MR-CSI) method is proposed to deal with the electromagnetic inverse problems. For the conventional i
Externí odkaz:
https://doaj.org/article/ffbc2738512d4248b9f65b4891d2bd03
Publikováno v:
IEEE Access, Vol 7, Pp 57642-57650 (2019)
In this paper, different diffraction theories for estimating the diffraction field patterns modulated by metasurfaces are firstly revisited. Further reformulation of these theories is performed to better reveal their inherent mechanisms and differenc
Externí odkaz:
https://doaj.org/article/8819b94164814be49200ccdae5885160
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
A compact, low-profile, two-port dual-band circularly polarized (CP) stacked patch antenna for radio-frequency identification (RFID) multiple-input-multiple-output (MIMO) readers is proposed, which employs the shared-aperture technique. The proposed
Externí odkaz:
https://doaj.org/article/28c59193efd3478db9682514cd683162
Compact Four-Port Dual-Sense Circularly Polarized Stack-Up Patch Antenna for UHF/MW-RFID MIMO System
Autor:
Enze Zhang, Jinghui Qiu
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
A four-port dual-band dual circularly polarized (CP) stack-up patch antenna is introduced for multiple-input-multiple-output (MIMO) RFID application. The proposed antenna adopts two FR 4 substrates and one Rogers Ro4350b substrates. Two pairs of isol
Externí odkaz:
https://doaj.org/article/add0f646c8dc4071ab8eebec44721207
Publikováno v:
Photonics, Vol 8, Iss 9, p 397 (2021)
Due to the fact that a millimeter-wave (MMW) has a strong ability to penetrate clothing, MMW holographic imaging technology can conduct a non-contact inspection of the human body’s surface. In recent years, personnel surveillance systems utilizing
Externí odkaz:
https://doaj.org/article/8d7e82585be74f4f8252a40dd13c88fb
Publikováno v:
Сучасні інформаційні системи, Vol 2, Iss 1 (2018)
Предметом вивчення є механізми виникнення нестійкостей власних коливань напівпровідникових надґраток, обумовлених їх взаємодією з по
Externí odkaz:
https://doaj.org/article/0a13dfa26c294fab9a38b57fc094bf2d