Results 51 to 60 of about 1,013 (184)

Reconfigurable Terahertz Multi‐Harmonic Dual‐Combs

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
Terahertz dual‐comb spectroscopy requires precise control of repetition frequencies. A reconfigurable dual‐comb system is realized on a single self‐detected quantum cascade laser platform, where harmonic order serves as a new tuning parameter. Switching among fundamental and harmonic states enables flexible multi‐heterodyne down‐conversion without ...
Xuhong Ma, Zhiwei Qin, Xianglong Bi, Ziping Li, Wenjian Wan, Binbin Liu, Guibin Liu, Yue Pan, Yanming Lu, Hua Li   +9 more
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, Volume 3, Issue 3, Page 452-501, September 2026.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

Design and analysis of quasi‐lumped notch filter with extended upper pass band

Electronics Letters
This paper presents a hybrid technique‐based compact narrow band stop filter design for broadband applications. It provides the rejection of 60 dB at the centre frequency of 2.25 GHz without any stop band harmonics over the required frequency band of ...
Mohit, Satish Jhariya, Shailendra Singh, Raghvendra Kumar Rai   +3 more
doaj   +1 more source

From Biological Fractal Dynamics to Analog Fractional‐Order Circuits: A System Design Framework Based on Operatorization Thought

International Journal of Mechanical System Dynamics, Volume 6, Issue 3, Page 373-388, September 2026.
ABSTRACT Fractional calculus, with its unique advantage in describing memory and nonlocal effects, has become a key tool for modeling nonlinear dynamic systems. Its integration with circuit systems has opened up a new paradigm for modern circuit design.
Zhimo Jian, Zheng Li, Gang Peng, Chaoqian Luo, Yajun Yin   +4 more
wiley   +1 more source

STATE OF ART ON MICROSTRIP RESONATORS, FILTERS, DIPLEXERS AND TRIPLEXERS [PDF]

Journal of Mechanics of Continua and Mathematical Sciences
In today's world, communication is essential for various aspects of life. From military operations and medical systems to community networks, communication plays a crucial role in ensuring the smooth functioning of these applications.
Yaqeen S. Mezaal, Shahad K. Khaleel, Aqeel A. Al-Hillal, Adham R., Azeez, Mohammed S. Hemza, Kadhum Al-Majdi   +5 more
doaj   +1 more source

Single‐shot third‐harmonic spectral diagnostics for tender X‐ray FEL pulses using a bent‐crystal spectrometer

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1486-1494, September 2026.
Third‐harmonic spectral monitoring with an existing bent‐crystal spectrometer provides single‐shot bandwidth diagnostics and real‐time machine tuning for tender X‐ray free‐electron laser operation, and can be made non‐invasive when combined with a suitable beam‐sampling grating.The tender X‐ray (2.0–4.0 keV) region provides access to the K‐edges of ...
Christopher Arrell, Henrik Lemke, Eduard Prat   +2 more
wiley   +1 more source

A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2020
In this paper a 2-4 GHz microstrip IFM (Instantaneous Frequency Measurement) subsystem that uses Wilkinson power dividers, frequency discriminators based on band-stop filters and a DC arduino section is reported.
S. R. O de Souza, M. F. A de Souza, L. P. Pontes, M. T. de Melo, Ignacio Llamas-Garro   +4 more
doaj   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, Volume 13, Issue 44, 7 August 2026.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, Volume 12, Issue 16, 24 August 2026.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Direct design method for wideband quadruplet and higher‐order bandpass filters with a pair of transmission zeros based on explicit design formulas

IET Microwaves, Antennas & Propagation
This paper presents a direct design approach and explicit design formulas for a wideband quadruplet bandpass filter with a pair of transmission zeros. A filter can be designed based on a filter schematic composed of only transmission lines and a short ...
Juseop Lee, Hyunjong Choi, Jongheun Lee, Minhyup Song   +3 more
doaj   +1 more source