Results 101 to 110 of about 43,172 (307)

Open-loop tunable resonators and filters with constant bandwidth [PDF]

, 2012
This study presents a compact novel design for achieving constant bandwidth tunable filters with wide tuning range. A method for linearising the Q-factor against frequency is proposed.
Budimir, D., Athukorala, L.
core   +1 more source

Tunable multimode-interference bandpass fiber filter [PDF]

, 2010
We report on a wavelength-tunable filter based on multimode interference (MMI) effects. A typical MMI filter consists of a multimode fiber (MMF) spliced between two single-mode fibers (SMF).
Likamwa, P., Antonio-Lopez, J. E., Selvas-Aguilar, R., Castillo-Guzman, A., May-Arrioja, D. A.   +4 more
core   +3 more sources

Bandwidth and Wavelength Tunable All-Optical Filter Based on Cascaded Opto-Mechanical Microring Resonators

IEEE Photonics Journal, 2019
We propose and experimentally demonstrate an all-optical filter with tunable bandwidth and wavelength based on cascaded opto-mechanical microring resonators (MRRs).
Li Liu, Wei Xue, Xing Jin, Jin Yue, Zhihua Yu, Lina Zhou   +5 more
doaj   +1 more source

Water Adsorption‐Induced Color Sensor: Insight Into the Sensing Mechanism and Interfacial Engineering for Improved Responsiveness

Advanced Functional Materials, EarlyView.
We report a unique color‐sensing phenomenon of a TiO2/SbSI:Sb2S3 device utilizing X‐ray absorption. Based on the revealed penetration and adsorption of water onto TiO2, we successfully improved the color response speed and sensitivity by incorporating a hydrophilic polymer interlayer, thereby opening up opportunities for photodetection applications ...
Tai Kobayashi, Ryosuke Nishikubo, Yusuke Tomiyori, Fumitaka Ishiwari, Daisuke Asakura, Eiji Hosono, Miho Kitamura, Hisao Kiuchi, Yoshihisa Harada, Akinori Saeki   +9 more
wiley   +1 more source

Mechanically tunable coupled resonator waveguide bandpass filter [PDF]

, 2019
This paper proposes a novel mechanically tunable waveguide filter design, based on a coupled resonator topology. The resonator geometry consists of a rectangular waveguide cavity and a dielectric cylinder. Unlike conventional cylindrical resonators which
Janis Semenjako, Shestopalov, Yury,, Semenjako, Janis,, Karlis Kimsis, Y. V. Shestopalov, Kimsis, Karlis,   +5 more
core   +1 more source

Optical Characterization of Thin Films by Surface Plasmon Resonance Spectroscopy Using an Acousto-Optic Tunable Filter. [PDF]

Materials (Basel), 2023
Khasanov IS, Knyazev BA, Lobastov SA, Anisimov AV, Nikitin PA, Kameshkov OE.   +5 more
europepmc   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

A 5GHz 56dB Voltage Gain 0.18m CMOS LNA with Built-in [PDF]

, 2003
A 5GHz, 56dB voltage gain Low Noise Amplifier with built-in tunable center frequency and 30MHz bandwidth channel selection filter was implemented using 0.18m CMOS process.
Tunable Channel Filter, Jack Lau, Hau-yiu Tsui   +2 more
core  

Tunable multiband RF CMOS active filter arrays [PDF]

, 2015
RF-FPGAS and field-programmable filter arrays require tunable analog filters that can be digitally reconfigured in real-time to have several user-selected passbands and stopband notches.
Chamith Wijenayake, Madanayake, Arjuna, Ahmadi, Peyman, Nilan Udayanga, Udayanga, Nilan, Wijenayake, Chamith, Arjuna Madanayake, Belostotski, Leonid, Peyman Ahmadi, Leonid Belostotski   +9 more
core   +1 more source

A Fractal-Based Compact Tunable Bandpass Filter with High Selectivity and Band Rejection

Journal of Engineering and Sustainable Development
Fractal geometries have emerged as a promising approach for designing compact, tunable electronic components, particularly in microwave and radio-frequency circuits.
Areeg Fadhil, Malik Jasim Farhan, Jawad K. Ali, Ameer Alsultani   +3 more
doaj   +1 more source