Results 31 to 40 of about 18,313 (294)

A new microstrip diplexer using open-loop resonators

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, a new microstrip diplexer using open loop resonators with compact size and high isolation is designed and fabricated for the WLANs (IEEE 802.11b/g at 2.4 GHz and IEEE 802.11a at 5.2 GHz) applications.
A. Chinig, J. Zbitou, A. Errkik, L. Elabdellaoui, A. Tajmouati, A. Tribak, M. Latrach   +6 more
doaj   +1 more source

A Resonant Pressure Microsensor Based on Double-Ended Tuning Fork and Electrostatic Excitation/Piezoresistive Detection

Sensors, 2018
This paper presents a resonant pressure microsensor relying on electrostatic excitation and piezoresistive detection where two double-ended tuning forks were used as resonators, enabling differential outputs.
Xiaoqing Shi, Yulan Lu, Bo Xie, Yadong Li, Junbo Wang, Deyong Chen, Jian Chen   +6 more
doaj   +1 more source

A Resonant Pressure Sensor Based upon Electrostatically Comb Driven and Piezoresistively Sensed Lateral Resonators

Micromachines, 2019
This study proposes a microfabricated resonant pressure sensor in which a pair of double-ended tuning forks were utilized as resonators where comb electrodes and single-crystal silicon-based piezoresistors were used for electrostatic excitation and ...
Xiaoqing Shi, Sen Zhang, Deyong Chen, Junbo Wang, Jian Chen, Bo Xie, Yulan Lu, Yadong Li   +7 more
doaj   +1 more source

Micromachined vibratory gyroscopes controlled by a high order band-pass sigma delta modulator.

, 2007
—This work reports on the design of novel closed-loop control systems for the sense mode of a vibratory-rate gyroscope based on a high-order sigma-delta modulator (SDM). A low-pass and two distinctive bandpass topologies are derived, and their advantages
Dong, Yufeng, Kraft, Michael, Redman-White, William   +2 more
core   +1 more source

Opto-Acoustic Oscillator Using Silicon Mems Optical Modulator

, 2011
We show operation of a silicon MEMS based narrow-band optical modulator with large modulation depth by improving the electro-mechanical transducer. We demonstrate an application of the narrowband optical modulator as both the filter and optical modulator
Bhave, Sunil A., Sridaran, Suresh
core   +1 more source

Optimization of MKID Noise Performance Via Readout Technique for Astronomical Applications [PDF]

, 2010
Detectors employing superconducting microwave kinetic inductance detectors (MKIDs) can be read out by measuring changes in either the resonator frequency or dissipation. We will discuss the pros and cons of both methods, in particular, the readout method
Anastasios Vayonakisa, Benjamin A. Mazine, Henry G. Leduc, Henry G. Leducc, Hien T. Nguyenc, Jack Sayersc, James A. Schlaerthb, Jason Glennb, Jiansong Gaod, John E. Vaillancourtf, Jonas Zmuidzinas, Matt I. Hollistera, Nicole Czakon, Nicole G. Czakona, Omid Noroozian, Omid Norooziana, Peter K. Dayc, Philip R. Wilsonc, Phillip R. Maloneyb, Ran P. Duana, Seth Siegela, Sunil R. Golwalaa, Thomas P. Downesa   +22 more
core   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Stability Characteristics of a Model Trim Adjustment System for Open Loop Active Control of Thermoacoustic Instability

Journal of Aerospace Technology and Management, 2019
Thermoacoustic instability in liquid rocket engines can have potentially catastrophic consequences. Active control based on feedback promises improved stability margin over a wider range of operating conditions than passive control.
Varghese M Thannickal, T John Tharakan, Satyanarayanan R Chakravarthy   +2 more
doaj   +3 more sources

Design of a Microstrip Diplexer and Triplexer Using Open Loop Resonators

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper a novel design of microstrip diplexer and triplexer using open loop resonators is presented. The proposed diplexer if formed by two band-pass filters for the Industrial Scientific Medical (ISM) applications at 5.8 GHz and the WIMAX ...
A. Chinig, A. Errkik, L .El Abdellaoui, A. Tajmouati, J. Zbitou, M. Latrach   +5 more
doaj   +1 more source

Design of wideband vibration-based electromagnetic generator by means of dual-resonator [PDF]

, 2014
This paper describes the design of a wideband electromagnetic energy harvester that utilizes a novel dual-resonator method to improve the operational frequency range of the vibration-based generator. The device consists of two separate resonator systems (
Gilbert, J. M., Ooi, B. L.
core   +1 more source