Adaptive Technique to Discriminate against Coherent Noise in a Narrow‐Band System

1966 ◽  
Vol 39 (1) ◽  
pp. 74-78 ◽  
Author(s):  
S. W. W. Shor
Keyword(s):  
Narrow Band ◽  
Band System ◽  
Coherent Noise ◽  
Adaptive Technique

Heterodyne Digital Control of a High-Frequency Micromechanical Oscillator

2005 ◽  
Vol 128 (3) ◽  
pp. 577-583 ◽  
Author(s):  
Thomas E. Kriewall ◽  
Joseph L. Garbini ◽  
John A. Sidles ◽  
Jonathan P. Jacky
Keyword(s):  
High Frequency ◽  
Digital Control ◽  
Narrow Band ◽  
Band System ◽  
Digital Signal ◽  
Computational Effort ◽  
Pass Band ◽  
Magnetic Resonance Force Microscopy ◽  
Force Microscopy ◽  
Lock In

In this paper we present heterodyne control as a technique for digital feedback control of a high-frequency, narrowband micromechanical oscillator. In this technique, isolated and synchronized hardware downconversion and upconversion components are used in conjunction with digital signal processing (DSP) to control the oscillator. Heterodyne control offers reduced computational effort for the digital control of high-frequency, narrow band system, the reduction of noise outside the pass-band, and the generation of lock-in amplifier signals. We present heterodyne control with design criteria in the context of magnetic resonance force microscopy (MRFM) cantilever control. Finally, we present experimental results of heterodyne control applied to an emulated radio-frequency microcantilever system.

Photometric separation of temperature, reddening, and chemical composition

1966 ◽  
Vol 24 ◽  
pp. 211-219
Author(s):  
J. A. Williams
Keyword(s):  
Chemical Composition ◽  
Narrow Band ◽  
Band System ◽  
Effects Of Temperature ◽  
K Giants

It is very difficult to separate the effects of interstellar reddening from the effects of temperature reddening and differences in chemical composition. In this paper I discuss several methods which have been used to make this separation. The application of the narrow-band system of Crawford (1), Table 1, to population I cepheids with periods greater than 13 days and the evidence from G–K giants that the system makes the separation are described in more detail.

Capacity reduction of WCDMA downlink in the presence of interference from adjacent narrow-band system

2002 ◽  
Vol 51 (1) ◽  
pp. 37-51 ◽  
Author(s):  
K. Heiska ◽  
H. Posti ◽  
P. Muszynski ◽  
P. Aikio ◽  
J. Numminen ◽  
...  
Keyword(s):  
Narrow Band ◽  
Band System ◽  
Capacity Reduction

Superconductivity in a narrow-band system with intersite electron pairing in two dimensions: A mean-field study

1988 ◽  
Vol 37 (16) ◽  
pp. 9410-9422 ◽  
Author(s):  
R. Micnas ◽  
J. Ranninger ◽  
S. Robaszkiewicz ◽  
S. Tabor
Keyword(s):  
Field Study ◽  
Narrow Band ◽  
Band System ◽  
Mean Field ◽  
Two Dimensions ◽  
Electron Pairing

Superconductivity in an anisotropic three-dimensional narrow-band system

1991 ◽  
Vol 43 (7) ◽  
pp. 5606-5611 ◽  
Author(s):  
D. K. Ray ◽  
J. Konior ◽  
A. M. Oleś ◽  
A. N. Das
Keyword(s):  
Narrow Band ◽  
Band System ◽  
Three Dimensional

Superconductivity in narrow-band system with correlated hopping

1991 ◽  
Vol 185-189 ◽  
pp. 1587-1588 ◽  
Author(s):  
Valery A. Ivanov ◽  
Mikhall E. Zhuravlev
Keyword(s):  
Narrow Band ◽  
Band System

scholarly journals Effective Temperature Scales of Red Giant Stars

1999 ◽  
Vol 191 ◽  
pp. 84-90
Author(s):  
David R. Alexander ◽  
Jason W. Ferguson ◽  
Robert F. Wing ◽  
Hollis R. Johnson ◽  
Peter H. Hauschildt ◽  
...  
Keyword(s):  
Effective Temperature ◽  
Near Infrared ◽  
Narrow Band ◽  
State Of The Art ◽  
Band System ◽  
Spectral Synthesis ◽  
Giant Stars ◽  
Red Giant ◽  
Absorption Features ◽  
The Continuum

We have completed a grid of spherically symmetric AGB star atmospheres using the state of the art spectral synthesis code PHOENIX. Models are constructed for stars with masses of 1 M⊙and 1.5 M⊙, spanning the range 10 to 3300 L⊙in luminosity and 2500 to 5200 K in effective temperature. We find that grains of Al2O3and CaTiO3among other species form in atmospheres cooler than Teff= 3000 K. In the coolest models the grains cause a weakening of the TiO absorption features in the red and near infrared of up to 30% through both a depression of the continuum and a depletion of the TiO number abundance. We use spectrophotometric observations from a number of catalogs to determine effective temperature – spectral class and effective temperature – color relationships. We also compare synthetic colors calculated from our models with observations of M giants on Wing's 8-color narrow-band system of classification photometry.

Superconducting phase diagram of a narrow-band system atT=0: A mean-field study

1993 ◽  
Vol 48 (22) ◽  
pp. 16673-16679 ◽  
Author(s):  
A. N. Das ◽  
Sujit Sarkar ◽  
P. Choudhury
Keyword(s):  
Phase Diagram ◽  
Field Study ◽  
Narrow Band ◽  
Band System ◽  
Mean Field ◽  
Superconducting Phase
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