Results 1 to 10 of about 9,354 (164)

Millimeter wave antennas [PDF]

open access: yesProceedings of the IEEE, 1992
n ...
F K Schwering
exaly   +2 more sources

Programmable radio-frequency calculations in electromagnetic-wave domain [PDF]

open access: yesNature Communications
Information metasurfaces have emerged as pivotal components in next-generation electronic systems. However, current research is mainly focused on the physical structures and system functions, while radio-frequency signal processing and calculation remain
Shao Nan Chen   +11 more
doaj   +2 more sources

Trivial-nontrivial programmable topological metasurfaces for sensing and communication [PDF]

open access: yesLight: Science & Applications
Trivial-nontrivial topological switching provides a distinctive physical pathway for multifunctional electromagnetic systems, yet has never been exploited for integrated sensing and communication (ISAC).
Qiang Xiao   +9 more
doaj   +2 more sources

Dual-physics programmable metasurfaces for dynamical controls of acoustics and electromagnetics [PDF]

open access: yesNature Communications
Programmable metasurfaces bring new opportunities for modern acoustic and electromagnetic technologies by dynamically tailoring wave-matter interactions at subwavelength scales.
Zheng Zhang   +7 more
doaj   +2 more sources

Random Time‐Space Coding Metasurfaces for Spatial Control of the Temporal Statistics of Electromagnetic Fields [PDF]

open access: yesAdvanced Science
Conventional methods to control electromagnetic (EM) fields via digital coding metasurfaces are basically focused on generating deterministic EM responses, such as beam forming, holographic imaging, and harmonic modulation, by employing specific coding ...
Jia Cheng Li   +3 more
doaj   +2 more sources

Manipulations of multi-frequency waves and signals via multi-partition asynchronous space-time-coding digital metasurface

open access: yesNature Communications, 2023
Manipulations of multiple carrier frequencies are especially important in a variety of fields like radar detection and wireless communications. In conventional radio-frequency architecture, the multi-frequency control is implemented by microwave circuits,
Si Ran Wang   +5 more
doaj   +1 more source

Overview of Signal Processing Techniques for Automotive Millimeter-wave Radar

open access: yesLeida xuebao, 2023
As one of the core components of Advanced Driver Assistance Systems (ADAS), automotive millimeter-wave radar has become the focus of scholars and manufacturers at home and abroad because it has the advantages of all-day and all-weather operation ...
Yan HUANG   +15 more
doaj   +1 more source

Design of Low-Cost Full W-Band 8th Harmonic Mixers for Frequency Extension of Spectrum Analyzer

open access: yesIET Circuits, Devices and Systems, 2023
High-order harmonic mixer is popular for frequency extension of spectrum analyzer (SA) from microwave to millimeter-wave or even terahertz band. The manufactures of SA usually offer expensive harmonic mixers where frequency extension is needed.
Jian Guo   +5 more
doaj   +1 more source

Millimeter-Wave Communications [PDF]

open access: yesElectronics, 2020
For the last few decades, the millimeter wave (mmWave) frequency band (30–300 GHz) has been seen as a serious candidate to host very high data rate communications [...]
openaire   +2 more sources

Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
Reconfigurable antennas have been widely employed for beam scanning in recent years. However, such antennas are usually limited by narrow bandwidth. To overcome this challenge, we present a linearly polarized 2-bit ultra-wideband (UWB) antenna array in C-
Zuqi Fang   +6 more
doaj   +1 more source

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