Random telegraph signal noise mechanisms in reverse base current of hot carrier-degraded submicron bipolar transistors: Effect of carrier trapping during stress on noise characteristics

2001 ◽  
Vol 89 (7) ◽  
pp. 4049-4058 ◽  
Author(s):  
D. Pogany ◽  
J. A. Chroboczek ◽  
G. Ghibaudo
Keyword(s):  
Bipolar Transistors ◽  
Random Telegraph Signal ◽  
Signal Noise ◽  
Carrier Trapping ◽  
Hot Carrier ◽  
Base Current ◽  
Noise Characteristics

Comparison of hot-carrier and radiation induced increases in base current in bipolar transistors

1994 ◽  
Vol 41 (6) ◽  
pp. 2567-2573 ◽  
Author(s):  
R.L. Pease ◽  
S.L. Kosier ◽  
R.D. Schrimpf ◽  
W.E. Combs ◽  
M. Davey ◽  
...  
Keyword(s):  
Bipolar Transistors ◽  
Hot Carrier ◽  
Base Current ◽  
Radiation Induced

Random telegraph signal noise in SiGe heterojunction bipolar transistors

2002 ◽  
Vol 92 (8) ◽  
pp. 4414-4421 ◽  
Author(s):  
Martin von Haartman ◽  
Martin Sandén ◽  
Mikael Östling ◽  
Gijs Bosman
Keyword(s):  
Heterojunction Bipolar Transistors ◽  
Bipolar Transistors ◽  
Random Telegraph Signal ◽  
Signal Noise

A new magnetic resonance head coil and head immobilization device for gamma knife radiosurgery: an analysis of geometric distortion and signal/noise characteristics

2002 ◽  
Vol 97 ◽  
pp. 563-568 ◽  
Author(s):  
Paul Jursinic ◽  
Robert Prost ◽  
Christopher Schultz
Keyword(s):  
Magnetic Resonance ◽  
Gamma Knife Radiosurgery ◽  
Geometric Distortion ◽  
Gradient Field ◽  
Main Magnetic Field ◽  
Content Type ◽  
Signal Noise ◽  
Noise Characteristics ◽  
Head Coil ◽  
Fine Print

Object. The authors report on a new head coil into which the Leksell aluminum localization frame can be easily and securely mounted. Mechanically, the head coil interferes little with the patient. Methods. The head coil, which is for magnetic resonance (MR) imaging, is a 12-element quadrature transmitand-receive high-pass birdcage coil with a nominal operation frequency (63.86 MHz). The coil was built into a plastic housing. This new head coil minimizes patient motion and provides a 20% increase in signal/noise ratios compared with standard head coils. An MR image test phantom was mounted in the coil and this allowed quantification of image distortion due to inhomogeneities in the main magnetic field, nonlinearity in the gradient field, and paramagnetism of the aluminum headframe. There were no significant differences in geometric distortion between the new head coil and the standard coil. Conclusions. The new head coil has advantages for reducing patient movement artifacts and has a better signal/noise ratio with no reduction in geometric accuracy.

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