Results 11 to 20 of about 59,187 (301)

Vanadium dioxide thin films integrated with printed circuit board enables low-cost, reconfigurable millimeter-wave devices [PDF]

Communications Engineering
Millimeter-wave switches are essential for reconfigurable and adaptive communication systems, yet current solutions often face trade-offs between performance, scalability, and cost. Here we present a scalable, high performance and cost-effective approach
Amir Afshani, Wenqiang Xiang, Tarek Djerafi, Mohamed Chaker   +3 more
doaj   +2 more sources

Integrated millimeter-wave cavity electro-optic transduction [PDF]

Nature Communications
Emerging communications and computing technologies will rely ever-more on expanding the useful radio frequency spectrum into the millimeter-wave and terahertz frequency range.
Kevin K. S. Multani, Jason F. Herrmann, Emilio A. Nanni, Amir H. Safavi-Naeini   +3 more
doaj   +2 more sources

An Overmoded-Waveguide-Based Permittivity Measurement Method with High Accuracy and Ultra-Broadband over 8–110 GHz [PDF]

Micromachines
An overmoded-waveguide-based kit operating in 8–110 GHz for material complex permittivity measurement is proposed and designed in this paper. It overcomes the significant errors caused by air gaps in the conventional standard waveguide method (SWM ...
Weijie Wang, Yingjian Cao, Tieyang Wang, Fangfang Song, Shuanzhu Fang, Xianfeng Tang, Xiangqiang Li, Guoxiang Shu, Guo Liu   +8 more
doaj   +2 more sources

Compact waveguide-integrated metasurface twist with filtering and phase shifting capabilities for millimeter-wave guided-wave applications [PDF]

iScience
Summary: Recent advancements in metasurfaces have enabled precise control of wave properties such as amplitude, phase, and polarization, which are critical for multifunctional devices in modern communications.
Amirmasood Bagheri, Zahra Rahimian Omam, Pei Xiao, Seyed Ehsan Hosseininejad, Mohsen Khalily   +4 more
doaj   +2 more sources

Special Issue on Development and Applications of Microwave/Millimeter Wave Diagnostics in Industry

Applied Sciences, 2023
Microwave/millimeter wave devices and systems have been developed as core technologies in the fields of communication and measurement [...]
Atsushi Mase
doaj   +1 more source

Research status and prospects of perception technology for unmanned mining vehicle driving environment

Gong-kuang zidonghua, 2023
The auxiliary transportation system for coal mine is an essential system for transporting personnel, important materials, and equipment in coal mine enterprises.
HU Qingsong, MENG Chunlei, LI Shiyin, SUN Yanjing   +3 more
doaj   +1 more source

From Microwave Acoustic Filters to Millimeter-Wave Operation and New Applications

IEEE Journal of Microwaves, 2023
This paper reviews the latest developments in microwave acoustic wave devices. After an introduction and brief history of bulk acoustic wave (BAW) and surface acoustic wave (SAW) devices, a review is given for guided SAWs and XBARs - two new technologies,
Amelie Hagelauer, Rich Ruby, Shogo Inoue, Victor Plessky, Ken-Ya Hashimoto, Ryo Nakagawa, Jordi Verdu, Pedro de Paco, Amir Mortazawi, Gianluca Piazza, Zachary Schaffer, Ernest Ting-Ta Yen, Thomas Forster, Andreas Tag   +13 more
doaj   +1 more source

Editorial: Special Issue “Massive MIMO and mm-Wave Communications”

Sensors, 2022
Massive multiple-input multiple-output (mMIMO) communication systems and the use of millimeter-wave (mm-Wave) bands represent key technologies that are expected to meet the growing demand of data traffic and the explosion of the number of devices that ...
Gianmarco Romano
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

Millimeter-wave FET modeling based on a frequency extrapolation approach [PDF]

, 2000
An empirical distributed model, based on electromagnetic analysis and standard S-parameter measurements up to microwave frequencies, is shown to be capable of accurate small-signal predictions up to the millimeter-wave range.
Cidronali, A., Collodi, G., Santarelli, A., Toccafondi, C., Vannini, G.   +4 more
core   +1 more source