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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

Quantum-inspired superposition and nonseparable states of reconfigurable metasurfaces in classical systems [PDF]

open access: yesNature Communications
Classical and quantum bits serve as cornerstone in information science. As this field rapidly evolves, the interplay between the two continues to enrich and inspire each other.
Long Chen   +7 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

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

Active odd-mode-metachannel for single-conductor systems

open access: yesOpto-Electronic Advances, 2022
Although tremendous efforts have been devoted to investigating planar single-conductor circuits, it remains challenging to provide tight confinement of electromagnetic field and compatibility with active semi-conductor components such as amplifier ...
Pei Hang He   +7 more
doaj   +1 more source

Absorptive Microstrip-Fed Slot Antenna With Wide Reflectionless Band by Loading Bandstop Filter

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
This paper presents an absorptive microstrip-fed slot antenna with a wide reflectionless band and high radiation efficiency. The proposed antenna consists of a microstrip-fed slot antenna, a quarter-wavelength coupled-line bandstop filter (BSF), and ...
Yanqun Liu   +4 more
doaj   +1 more source

Two-Dimensional Beam Steering Based on Compact Programmable Coding Metasurface

open access: yesApplied Sciences, 2022
A programmable coding metasurface provides unprecedented flexibility to manipulate electromagnetic waves dynamically. By controlling the peculiarity of subwavelength artificial atoms, devices with metasurfaces perform various functionalities.
Fei Yang   +6 more
doaj   +1 more source

A compact high‐sensitivity tangential E‐probe with resonator and coupled balun

open access: yesElectronics Letters, 2022
A compact high‐sensitivity probe for sensing up tangential E‐field is proposed and measured in this paper. The probe consists of an electric dipole with patches used to induce the tangential E‐field, a resonator made up of open circuit stubs (capacitor ...
Shang Zhang   +4 more
doaj   +1 more source

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