Results 61 to 70 of about 4,146 (226)

Neural Network–Assisted Metasurface Retroreflector With Wide‐Angle Adaptivity

Electron, Volume 4, Issue 2, May 2026.
This work proposes a wide‐angle, multi‐polarization, self‐sensing, and self‐adaptive intelligent metasurface retroreflector, with a planar profile and ultrathin thickness. By integrating a pre‐trained artificial neural network (ANN), the metasurface retroreflector can recognize the incident angle and promptly adapt to changes in the incoming wave.
Jing Ning, Xunfan Wang, Kun Duan, Weixu Yang, Junming Zhao, Tian Jiang, Ke Chen, Yijun Feng   +7 more
wiley   +1 more source

Heterostructure Barrier Varactor Multipliers [PDF]

, 2000
The Heterostructure Barrier Varactor (HBV) diode and its application in frequency multipliers is reviewed. Different material systems and HBV models are described.
Ingvarson, Mattias,, Stake, Jan,, Dillner, Lars,, Kollberg, Erik,   +3 more
core   +2 more sources

LOW PASS AND QUAD BAND PASS TUNABLE FILTER BASED ON STUB RESONATOR TECHNIQUE [PDF]

Jordanian Journal of Computers and Information Technology, 2019
An electronically tunable multi-passband filter using one varactor diode is implemented based on transmission line stub method for passing several most favourable applications through multiple operating bands.
Yanal S. Faouri, Hanin Sharif, Leena Smadi , Hani Jamleh   +3 more
doaj   +1 more source

Dynamic Multifunctional Metasurfaces Based on Passive Cascade Structure

Electron, Volume 4, Issue 2, May 2026.
A dynamic multifunctional metasurface is proposed in this paper. Unlike mainstream multifunctional metasurface based on programmable metasurfaces, it consists of two passive metasurfaces, presenting a significant cost advantage. By controlling the displacement, different functions such as beam steering, focusing, and OAM wave generation can be realized
Xiangming Wu, Yifeng Wang, Haoyang Shi, Jie Tian, Xiong Wang, Weiren Zhu   +5 more
wiley   +1 more source

Simulation and Fabrication of Broadband Tunable Phase Shifter Based on Transmission Line Metamaterial [PDF]

Radioengineering, 2019
This paper presents a kind of broadband, low-loss tunable phase shifter based on transmission line metamaterial. An inherent high-pass backward-wave response property of a left-handed metamaterial based on coplanar waveguide (CPW) transmission line was ...
S. Sheng, H. X. Chen, J. Wen, H. R. Liu
doaj  

Intelligent materials for on‐demand electromagnetic absorption

InfoMat, Volume 8, Issue 5, May 2026.
This review introduces an innovative “stimulus‐state‐property” paradigm, facilitating a fundamental transition from static to dynamically intelligent electromagnetic wave absorption (EMWA). The key advancement lies in the synergistic integration of external fields with structurally engineered metamaterials and tunable components.
Chongyang Chai, Lin Yang, Haoxu Si, Bo Hao, Yi Zhang, Cuiping Li, Jingwei Zhang, Chunhong Gong   +7 more
wiley   +1 more source

A wide tuning range VCO design using multi-pass loop complementary current control with IMOS varactor for low power applications

Engineering Science and Technology, an International Journal, 2019
In this work a wide-bandwidth low-power voltage-controlled oscillator (VCO) design is presented using a new differential delay cell with complementary current control mechanism and inversion mode MOSFET (IMOS) varactor.
Vivek Jangra, Manoj Kumar
doaj   +1 more source

Constant absolute bandwidth tunable asymmetric order dual‐band BPF with reconfigurable bandwidth using mode control technique

IET Microwaves, Antennas & Propagation, 2021
Herein, a dual‐band bandpass filter with bandwidth tuning and constant bandwidth centre frequency tuning is presented, where the first and second bands are, respectively, of two and three modes.
Shriman Narayana, Nagendra Kumar, Yatendra Kumar Singh   +2 more
doaj   +1 more source

XOR‐Logic Phase Coding Programmable Metasurface for Low Power‐Consumption Systems

Advanced Science, Volume 13, Issue 22, 17 April 2026.
By leveraging XOR logic, the biasing‐network complexity of 2D programmable metasurfaces is reduced from m×n to m+n through efficient row‐column control. This enables versatile functions including beam deflection and beamforming, facilitating applications in wireless communications and beyond.
Ruichao Zhu, Sai Sui, Junyan Dai, Qunyan Zhou, Yuxiang Jia, Yajuan Han, Yuxi Li, Shaojie Wang, Qiang Cheng, Jiafu Wang, Tie Jun Cui   +10 more
wiley   +1 more source

Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley   +1 more source