Results 41 to 50 of about 22,648 (287)
An ultra‐wideband low‐profile antenna for long‐term evolution/5G new radio sub‐6G applications
Electronics Letters, 2022 An ultra‐wideband dual‐polarized antenna with a low profile is proposed for base‐station applications. The dual‐polarized antenna consists of two crossed dipoles, a square patch, and a square meta‐surface.
Yuehui Cui, Zhenxing Tu, RongLin Li
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A Compact Planar Monopole UWB MIMO Antenna for Short-Range Indoor Applications
Sensors, 2023 A compact, four-element planar MIMO (Multiple Input, Multiple Output) antenna that operates in an ultra-wideband is presented for diversity application.
Shanmugam Kolangiammal +2 more
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Advanced Functional Materials, EarlyView.A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song +3 more
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Advanced Functional Materials, EarlyView.This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva +9 more
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An Ultra-Wideband Vivaldi Antenna System for Long-Distance Electromagnetic Detection
Applied Sciences, 2022 Enlarging or reducing the antenna beam width of antennas can improve the positioning capability of detection systems. A miniaturized and easily fabricated ultra-wideband (UWB) antenna system for long-distance electromagnetic detection is proposed in this
Jinjing Ren +5 more
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Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
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High Repetition Rate in Ultra-Wideband Radar Systems
Известия высших учебных заведений России: Радиоэлектроника, 2016 Low and high repetition rate work modes for ultra-wideband radar are considered. The ultra-short pulse packs usage for ultra-wideband radar systems is proposed. The advantages, disadvantages and probable fields of usage of such method are shown.
O. S. Mironov
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Microwave Angiography by Ultra-Wideband Sounding: A Preliminary Investigation [PDF]
, 2023 Somayyeh Chamaani +5 more
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Advanced Functional Materials, EarlyView.This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To +5 more
wiley +1 more source
Electrical, Control and Communication Engineering, 2020 A novel design of ultra-wideband CPW-fed compact monopole patch antenna is presented in the article. The size of the antenna is 22 × 18 × 1.6 mm and it operates well over an ultra-wideband frequency range 4.86–13.66 GHz (simulated) and 4.93–13.54 GHz ...
Dwivedi Ajay Kumar +4 more
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