Results 31 to 40 of about 155,916 (298)

Wideband Single and Dual Linearly Polarized Magneto-Electric Dipole Array Antennas for 5G/6G Millimeter-Wave Applications

IEEE Open Journal of Antennas and Propagation
A new taper-shaped linearly polarized (LP) magneto-electric (ME) dipole, excited by the U-shaped microstrip line through a coupling slot, is proposed in this paper. An ultra-wide simulated impedance bandwidth of 85% (20.5-50.6 GHz) and 1.5-dB gain
Lei Xiang, Fan Wu, Kai Chen, Renrong Zhao, Sai Ma, Yuanwei Zhu, Chao Yu, Zhi Hao Jiang, Yu Yao, Wei Hong   +9 more
doaj   +1 more source

Millimeter-wave detection of landmines

SPIE Proceedings, 2013
Millimeter wave absorption relative to background soil can be used for detection landmines with little or no metal content. At these frequencies, soil and landmine absorb electromagnetic energy differently. Stepped frequency measurements from 20 GHz to 60 GHz were used to detect buried surrogate landmines in the soil.
Ozturk, Hilmi, Nazli, Hakki, Yegin, Korkut, Bicak, Emrullah, Sezgin, Mehmet, Dag, Mahmut, Turetken, Bahattin   +6 more
openaire   +3 more sources

CMB polarimetry with BICEP: instrument characterization, calibration, and performance [PDF]

, 2008
BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at degree angular scales. Currently in its third year of operation at the South
Ade, P., Barkats, Denis, Battle, John O., Bierman, Evan M., Bock, James J., Chiang, H. Cynthia, Dowell, C. Darren, Duband, L., Hivon, Eric F., Holzapfel, William L., Hristov, Viktor V., Jones, William C., Kaufman, J. P., Keating, Brian G., Kovac, John M., Kuo, Chao-Lin, Lange, Andrew E., Leitch, Erik M., Mason, Peter V., Matsumura, Tomotake, Nguyen, Hien T., Ponthieu, Nicolas, Rocha, Graca M., Takahashi, Yuki D., Yoon, Ki Won   +24 more
core   +4 more sources

A Circularly-Polarized-Reconfigurable Patch Antenna With Liquid Dielectric

IEEE Open Journal of Antennas and Propagation, 2021
A circularly-polarized-reconfigurable patch antenna based on fluidic control method is proposed in this paper. A liquid dielectric, ethyl acetate, is introduced to change the substrate of a patch antenna from homogeneous to inhomogeneous.
Zhe Chen, Hao-Zhan Li, Hang Wong, Xiao Zhang, Tao Yuan   +4 more
doaj   +1 more source

Study of millimeter wave phase shift in 40 GHz hybrid mode locked lasers [PDF]

, 2009
An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core   +2 more sources

Multifunctional movable-type coding metasurface enabling reconfigurable diffractive neural networks

Light: Science & Applications
Optical computing holds significant promise across diverse applications due to its low latency, power efficiency, and multidimensional processing capabilities. However, current diffraction neural networks (DNNs) generally lack reconfigurability, limiting
Zhicai Yu, Xinyu Li, Ze Gu, Long Chen, Jianlin Su, Zixuan Cai, Xinyi Yu, Shilong Qin, Lei Zhang, Qian Ma, Jian Wei You, Tie Jun Cui   +11 more
doaj   +1 more source

Decoupling of Dual-Polarized Antenna Arrays Using Non-Resonant Metasurface

Sensors, 2022
A non-resonant metasurface (NRMS) concept is reported in this paper to improve the isolation of dual-polarized and wideband large-scale antenna arrays. By properly designing the NRMS, it can perform stable negative permeability and positive permittivity ...
Shengyuan Luo, Peng Mei, Yiming Zhang, Gert Frølund Pedersen, Shuai Zhang   +4 more
doaj   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source

BioMeta: modular reprogrammable metasurface for noninvasive human respiration monitoring

Nanophotonics
Human vital-sign sensing using electromagnetic wave has emerged as a promising technology for the noninvasive monitoring of individuals’ health status. Here, a modular reprogrammable metasurface system is presented to suppress noise in noninvasive human ...
Li Xin Yu, Chen Long, Qin Shi Long, Zhao Ke Zhan, Cai Zi Xuan, Peng Qiao Cong, Ma Qian, You Jian Wei, Cui Tie Jun   +8 more
doaj   +1 more source

Maximum Throughput Scheduling for Multi-connectivity in Millimeter-Wave Networks

, 2018
Multi-connectivity is emerging as promising solution to provide reliable communications and seamless connectivity at the millimeter-wave frequency range. Due to the obstacles that cause frequent interruptions at such high frequency range, connectivity to
Malanchini, Ilaria, Pappas, Nikolaos, Tatino, Cristian, Yuan, Di   +3 more
core   +1 more source