Results 91 to 100 of about 3,368,646 (281)

A Compact Three-Layer Stacked Feed Network Integrating a Quad-Ridged Orthomode Transducer and Diplexers for Dual-Band Millimeter-Wave Applications

Micromachines
A compact, low-profile dual-band feed network operating at 37–40 GHz (Ka-band) and 70–86 GHz (E-band) is presented for millimeter-wave backhaul applications.
Yuanjun Shen, Tianling Zhang, Jiayin Guo, Pengpeng Chu   +3 more
doaj   +1 more source

High Gain Compact UWB Antenna for Ground Penetrating Radar Detection and Soil Inspection. [PDF]

Sensors (Basel), 2022
Saeidi T, Alhawari ARH, Almawgani AHM, Alsuwian T, Imran MA, Abbasi Q.   +5 more
europepmc   +1 more source

FM airborne passive radar [PDF]

, 2013
The airborne application of Passive Bistatic Radar (PBR) is the latest evolution of the now established international interest in passive radar techniques.
Brown, JWA
core  

StackingNet: Collective Inference Across Independent AI Foundation Models

Advanced Science, EarlyView.
ABSTRACT Artificial intelligence (AI) built on large foundation models has transformed language understanding, computer vision, and reasoning, yet these systems remain isolated and cannot readily share their capabilities. Coordinating the complementary strengths of independently developed, black‐box foundation models is essential for trustworthy ...
Siyang Li, Chenhao Liu, Dongrui Wu, Zhigang Zeng, Lieyun Ding   +4 more
wiley   +1 more source

Cooperative Fusion Based Passive Multistatic Radar Detection. [PDF]

Sensors (Basel), 2021
Asif A, Kandeepan S.
europepmc   +1 more source

Modified MXene Aerogel With Broadband Microwave Absorption Inspired by Melanophila Acuminata Beetle

Advanced Science, EarlyView.
This work introduces a novel biomimetic strategy inspired by the infrared‐sensing sensilla of the Melanophila acuminata beetle. We have designed a multi‐level aerogel, featuring a three‐dimensional carbon framework decorated with synergistic CeO2 nanoparticles and Ti3C2Tx MXene nanosheets.
Zhiwei Liu, Dingyu Xu, Zhaobo Liu, Haitian Song, Qianqian Zhang, Junxiao Zhou, Xiewen Wen   +6 more
wiley   +1 more source

Active control of single-photon spontaneous emission out-coupling enhancement by rotation modulation of hyperbolic metamaterials

iScience
Summary: Controlling the rate and direction of spontaneous emission is critical for quantum technologies such as single-photon sources and secure communications. We propose a tunable nanophotonic device that modulates spontaneous emission by rotating the
Yubin Ma, Muhammad Imran, Muhideen Yahya Musa, Shafi Ullah Khan, Rujiang Li   +4 more
doaj   +1 more source

Multi-UAV cooperative reconnaissance mission planning novel method under multi-radar detection. [PDF]

Sci Prog, 2022
Shi Y, Liu Y, Ju B, Wang Z, Du X.
europepmc   +1 more source

Rare‐Earth–Sulfur Surface Modification Enables SiC Ceramics for Low‐Frequency Electromagnetic Wave Absorption in Extreme Environments

Advanced Science, EarlyView.
By altering surface chemical bonds to prolong relaxation time and shift absorption to lower frequencies, SiC/rare earth–sulfur (RE─S, RE = La, Ce, Pr, Sm, Gd, Er) materials achieve excellent low‐frequency electromagnetic wave absorption under extreme conditions, offering a new direction for designing high‐performance SiC‐based absorbers.
Zhanming Wu, Xiaojun Zeng, Yu‐Nan Tan, Chi Yu, Nuohua Xie, Yanfeng Gao   +5 more
wiley   +1 more source

Near-infrared perfect absorption achieved with graphene-LiF multilayer metamaterial

iScience
Summary: Achieving perfect absorption of electromagnetic radiation across the near-infrared (NIR) to short-wave infrared spectrum is critical for various applications. While previous studies have demonstrated tunable absorption in graphene-based systems,
Muhammad Imran, Yubin Ma, Xueqing He, Yanpeng Zhang, Rujiang Li   +4 more
doaj   +1 more source