Results 21 to 30 of about 30,488 (265)

Progress in Differentially Fed Dielectric Resonator Antennas

Nantong Daxue xuebao. Ziran kexue ban, 2020
A differentially fed dielectric resonator antenna(DRA), which shows the advantages of both a DRA and a differentially fed antenna, has attracted extensive attention recently. In this paper, the characteristics of the operation modes and feeding mechanism
TANG Hui;CHEN Jianxin
doaj   +1 more source

Characteristics of Magnetohydrodynamic Oscillations Observed with Michelson Doppler Imager [PDF]

, 1999
We report on the spatial distribution of magnetogram oscillatory power and phase angles between velocity and magnetogram signals as observed with the Michelson Doppler Imager. The dataset is 151.25 arcsec times 151.25 arcsec containing sunspot from Dec 2,
A. A. Norton, Heyvaerts J., R. I. Bush, R. K. Ulrich, Ruedi I., T. D. Tarbell   +5 more
core   +3 more sources

A Method for the Suppression of Multiple Spurious Modes

Journal of Microelectromechanical Systems, 2018
This paper reports on a novel electrode design technique for spur suppression in parallel-plate piezoelectric resonators with minimal impact on the intended vibration mode. To demonstrate this technique, fabricated two-port resonators were designed to optimally excite the first harmonic of length extension in a lead zirconate titanate-on-silicon ...
Jonathan M. Puder, Jeffrey S. Pulskamp, Ryan Q. Rudy, Ronald G. Polcawich, Sunil A. Bhave   +4 more
openaire   +1 more source

Transverse Spurious Mode Compensation for AlN Lamb Wave Resonators

IEEE Access, 2019
Lamb wave modes with type I dispersion characteristics exhibit strong affinity toward multi transverse modes behavior above resonance frequency (fr) in the AlN Lamb wave resonators (LWRs), especially the high-transduction-efficiency modes: S0 and S1 mode.
Jie Zou, Jiansong Liu, Gongbin Tang
doaj   +1 more source

Wide Stopband Bandpass Filter Implemented by Stepped Impedance Resonator and Multiple In-Resonator Open Stubs

IEEE Access, 2019
Stepped impedance resonator (SIR) has been widely used for applications in wide stopband bandpass filters. However, the reported SIR wide stopband bandpass filters are limited in either stopband performance or design complexity.
Peng Chu, Lei Guo, Long Zhang, Ke Wu
doaj   +1 more source

Yoctocalorimetry: phonon counting in nanostructures [PDF]

, 1998
It appears feasible with nanostructures to perform calorimetry at the level of individual thermal phonons. Here I outline an approach employing monocrystalline mesoscopic insulators, which can now be patterned from semiconductor heterostructures into ...
Abrahams, Allen, Altshuler, Altshuler, Blakemore, Blatt, Brune, Carroll, Clarke, Dash, Fukuyama, Garrett, Gurevich, Hilbert, Jin, Kaganov, Kawamura, Ketchen, Ketchen, Landau, Lee, Loren Pfeiffer, M.L. Roukes, Mailly, Martinis, Martinis, Martinis, Mihailovich, More, Nishiguchi, Phillips, Rego, Richards, Roukes, Roukes, Schmid, Tesche, Tighe, Tremblay, Vion, Webb, Webb, Wellstood, Zaremba, Ziman, Ziman   +45 more
core   +3 more sources

Incommensurate Magnetic Fluctuations in YBa2Cu3O6.6 [PDF]

, 1997
We use inelastic neutron scattering to demonstrate that at low temperatures, the low frequency magnetic fluctuations in YBa_2Cu_3O_{6.6} ($T_c=62.7$ K) are incommensurate, being found at positions displaced by $\pm\delta$ ($0.057\pm 0.006$ r.l.u.) along ...
B. J. Sternlieb, C. Berthier, C. Castellani, F. Doǧan, H. A. Mook, H. A. Mook, H. A. Mook, H. F. Fong, H. F. Fong, J. Bobroff, J. M. Tranquada, J. M. Tranquada, J. M. Tranquada, J. M. Tranquada, J. P. Lu, J. Rossat-Mignod, J. Zaanen, K. Yamada, L. P. Regnault, N. Bulut, P. Bourges, P. Dai, Pengcheng Dai, R. M. Moon, S-W. Cheong, S. M. Hayden, T. E. Mason, U. Löw, V. J. Emery, V. J. Emery, Y. Zha, Y. Zha   +31 more
core   +3 more sources

Generation of amplitude-squeezed light from a room-temperature Fabry-Perot semiconductor laser [PDF]

, 1995
Amplitude-squeezed light with intensity fluctuations 29% below the standard quantum limit (SQL) is produced from a pump-suppressed room-temperature semiconductor laser, corresponding to 41% below the SQL after correction for detection efficiency. Excess
Kitching, J., Provenzano, D., Yariv, A.
core   +1 more source

Magnetic effects on the low-T/|W| instability in differentially rotating neutron stars [PDF]

, 2014
Dynamical instabilities in protoneutron stars may produce gravitational waves whose observation could shed light on the physics of core-collapse supernovae.
Duez, Matthew D., Foucart, Francois, Kidder, Lawrence E., Muhlberger, Curran D., Nouri, Fatemeh Hossein, Ott, Christian D., Scheel, Mark A., Szilágyi, Béla, Teukolsky, Saul A.   +8 more
core   +2 more sources

Implicit Euler numerical simulations of sliding mode systems [PDF]

, 2009
In this report it is shown that the implicit Euler time-discretization of some classes of switching systems with sliding modes, yields a very good stabilization of the trajectory and of its derivative on the sliding surface.
Acary, Vincent, Brogliato, Bernard
core   +3 more sources