Results 51 to 60 of about 476 (147)

Design and Fabrication of High Dielectric GRIN Lens for a Directive Antenna Using a Hybrid Filled Voxel Additive Manufacturing Technique

Advanced Materials Technologies, Volume 11, Issue 5, 6 March 2026.
Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng, Anna Radkovskaya, Kailun Xu, Ekaterina Shamonina, Patrick S. Grant   +4 more
wiley   +1 more source

Flexible carbon black-coated fabrics for electromagnetic camouflage: Design and characterization

Defence Technology
This work presents the design and evaluation of lightweight, textile-integrated coatings tailored to suppress radar signals for advanced camouflage and electromagnetic (EM) concealment.
Dorota Latanska-Wulw, Anna Marzec, Adam Pacholczyk   +2 more
doaj   +1 more source

Gradient index metamaterials for broadband underwater sound absorption

APL Materials
The underwater broadband anechoic coating is highly demanded in acoustic stealth for underwater vehicles. In this work, we propose a gradient index metamaterial for broadband underwater sound absorption, which is further experimentally validated under ...
Xiao Pan, Xinsheng Fang, Xuewen Yin, Yan Li, Yongdong Pan, Yabin Jin   +5 more
doaj   +1 more source

Advancements in ship acoustic stealth technology based on acoustic absorbing and insulating metamaterials

Zhongguo Jianchuan Yanjiu
With the rapid advancement of modern underwater detection technologies, both detection accuracy and frequency coverage, particularly in the low-frequency range, have improved significantly.
Wei LI, Zhiwei SONG, Zhiyuan HE, Jiuhui WU   +3 more
doaj   +1 more source

Protection of custom satellite antennas for deep-sea monitoring probes: Insights from the SONDA project

Applied Ocean Research
This study presents the development and testing of satellite antennas for the SONDA probe, an innovative deep-sea monitoring system designed to be deployed by high-altitude balloons.
T. Matos, H. Dinis, C.L. Faria, M.S. Martins   +3 more
doaj   +1 more source

Investigation of underwater sound scattering on a cylindrical shell coated with anechoic coatings by the finite element method based on an equivalent parameter inversion

Acta Physica Sinica, 2016
Anechoic coating attached to the surface of an underwater object is used for absorbing sound wave thereby reducing the reflection. The anechoic coating is often made of viscoelastic materials embedded with designed acoustic substructures, such as air cavities.
null Jin Guo-Liang, null Yin Jian-Fei, null Wen Ji-Hong, null Wen Xi-Sen   +3 more
openaire   +1 more source

Homogeneous models of anechoic rubber coatings

, 2003
NR ...
openaire   +1 more source

Fat-intra-body communication system using flexible wearable antennas with human and torso phantom validation for biomedical applications. [PDF]

Sci Rep
Mandal B, Shaw T, Rangaiah PKB, Joseph L, Chezhian AS, Mani M, Karlsson RL, Augustine R.   +7 more
europepmc   +1 more source

Miniaturization of Sub 6 GHZ Band 5G Monopole Antenna with Manganese Assisted CoFe₂O₄ Nano Self-Assembly Magneto-Dielectric Coating. [PDF]

ACS Omega
Dayanidhi V, Krishnan T, Dheivasigamani T.   +2 more
europepmc   +1 more source

Electromagnetic Field Shielding Using Interior Paints Enhanced with Metal Powders. [PDF]

Materials (Basel)
Zbojovský J, Liptai P.
europepmc   +1 more source