Ultra low-noise performance of 0.15-micron gate GaAs MESFET's made by direct ion implantation for low-cost MMIC's applications

1992 ◽  
Vol 2 (5) ◽  
pp. 194-195 ◽  
Author(s):  
M. Feng ◽  
J. Laskar ◽  
J. Kruse ◽  
R. Neidhard
Keyword(s):  
Ion Implantation ◽  
Low Cost ◽  
Low Noise ◽  
Noise Performance ◽  
Ultra Low Noise

scholarly journals Precession Azimuth Sensing with Low-Noise Molecular Electronics Angular Sensors

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Dmitry L. Zaitsev ◽  
Vadim M. Agafonov ◽  
Egor V. Egorov ◽  
Alexander N. Antonov ◽  
Vladimir G. Krishtop
Keyword(s):  
Molecular Electronics ◽  
Low Cost ◽  
Rotational Velocity ◽  
High Sensitivity ◽  
Low Noise ◽  
Motion Sensors ◽  
Noise Performance ◽  
Rotating Platform ◽  
Vector Projection ◽  
Signal Processing Algorithms

This paper describes the use of MET-based low-noise angular motion sensors to precisely determine azimuth direction in a dynamic-scheme method of measuring the Earth’s rotational velocity vector. The scheme includes sensor installation on a rotating platform so that it could scan the space and seek for the position of the highest Earth’s rotation vector projection on its axis. This method is very efficient provided a low-noise sensor is used. A low-cost angular sensor based on MET (molecular electronic transduction) technology has been used. The sensors of this kind were originally developed for seismic activity monitoring and are well known for very good noise performance and high sensitivity. This approach, combined with the use of special signal processing algorithms, allowed reaching the accuracy of 0.2°, while the measurement time was less than 100 seconds.

scholarly journals A 1GHz Low-cost, Ultra Low-noise Preamplifier

2020 ◽  
Vol 11 ◽  
pp. 120-126
Author(s):  
J. Chatzakis ◽  
S. Hassan ◽  
E. Clark ◽  
M. Tatarakis
Keyword(s):  
Integrated Circuits ◽  
High Speed ◽  
Low Cost ◽  
Low Noise ◽  
Silicon Photomultipliers ◽  
Low Frequencies ◽  
Measurement Systems ◽  
Speed Measurement ◽  
Ultra Low Noise ◽  
Low Noise Preamplifier

A high quality, compact 1GHz preamplifier suitable for operation in conjunction with micro channelplates (MCP) and silicon Photomultipliers (SiPM), that is comprised of two integrated circuits is described inthis paper. The amplifier requires no adjustment and has a flat response from low frequencies and adequatebandwidth for high speed measurement systems.

Transmission Electron Microscopy of oriented Co84Cr14Ta2 thin films for longitudinal magnetic recording

1991 ◽  
Vol 49 ◽  
pp. 756-757
Author(s):  
T. P. Nolan
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Low Cost ◽  
Low Noise ◽  
Information Storage ◽  
High Coercivity ◽  
Magnetic Alloy ◽  
Magnetic Media ◽  
Transmission Electron

Thin film magnetic media are being used as low cost, high density forms of information storage. The development of this technology requires the study, at the sub-micron level, of morphological, crystallographic, and magnetic properties, throughout the depth of the deposited films. As the microstructure becomes increasingly fine, widi grain sizes approaching 100Å, the unique characterization capabilities of transmission electron microscopy (TEM) have become indispensable to the analysis of such thin film magnetic media.Films were deposited at 225°C, on two NiP plated Al substrates, one polished, and one circumferentially textured with a mean roughness of 55Å. Three layers, a 750Å chromium underlayer, a 600Å layer of magnetic alloy of composition Co84Cr14Ta2, and a 300Å amorphous carbon overcoat were then sputter deposited using a dc magnetron system at a power of 1kW, in a chamber evacuated below 10-6 torr and filled to 12μm Ar pressure. The textured medium is presently used in industry owing to its high coercivity, Hc, and relatively low noise. One important feature is that the coercivity in the circumferential read/write direction is significandy higher than that in the radial direction.

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