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1967
Much of the recent progress in our understanding of the world around us was achieved through the ability to detect very weak signals, for example from outer space, from nerve fibers, or from the ocean floor. To detect these weak signals, one requires very sensitive receivers, and hence the ability to amplify these signals without, at the same time ...
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Much of the recent progress in our understanding of the world around us was achieved through the ability to detect very weak signals, for example from outer space, from nerve fibers, or from the ocean floor. To detect these weak signals, one requires very sensitive receivers, and hence the ability to amplify these signals without, at the same time ...
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IEEE Transactions on Microwave Theory and Techniques, 1986
Low-noise HEMT AIGaAs/GaAs heterostructure devices have been developed using metal organic chemical vapor deposition (MOCVD). The HEMT's with 0.5-µm-long and 200-µm-wide gates have shown a minimum noise figure of 0.83 dB with an associated gain of 12.5 dB at 12 GHz at room temperature.
K. Tanaka +7 more
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Low-noise HEMT AIGaAs/GaAs heterostructure devices have been developed using metal organic chemical vapor deposition (MOCVD). The HEMT's with 0.5-µm-long and 200-µm-wide gates have shown a minimum noise figure of 0.83 dB with an associated gain of 12.5 dB at 12 GHz at room temperature.
K. Tanaka +7 more
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The Journal of the Acoustical Society of America, 1988
A low-noise transformer, particularly for the use as an output transformer of an inverter, comprising a sound-proof envelope surrounding at least one of the windings for absorbing or screening noise originating from vibration due to electromagnetic force.
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A low-noise transformer, particularly for the use as an output transformer of an inverter, comprising a sound-proof envelope surrounding at least one of the windings for absorbing or screening noise originating from vibration due to electromagnetic force.
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IEEE Transactions on Magnetics, 1989
A novel type of multiloop DC SQUID (superconducting quantum interference device) has been fabricated. The device is made of six different layers deposited on a 2-in silicon wafer; the layers are patterned by means of optical lithography. Every chip is a square 6.35 mm on a side and contains two SQUIDs and their input coils; the typical coil inductance ...
Carelli P +3 more
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A novel type of multiloop DC SQUID (superconducting quantum interference device) has been fabricated. The device is made of six different layers deposited on a 2-in silicon wafer; the layers are patterned by means of optical lithography. Every chip is a square 6.35 mm on a side and contains two SQUIDs and their input coils; the typical coil inductance ...
Carelli P +3 more
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The Journal of the Acoustical Society of America, 1980
An improved water faucet having a valve body with control elements formed by two discs wherein the first disc is stationary and has water inlet openings and an outlet opening, connected on one side to the valve manifold. The other side is directed toward the second disc, which is movably arranged on the first disc.
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An improved water faucet having a valve body with control elements formed by two discs wherein the first disc is stationary and has water inlet openings and an outlet opening, connected on one side to the valve manifold. The other side is directed toward the second disc, which is movably arranged on the first disc.
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MHEMT G-band low-noise amplifiers
2013 IEEE MTT-S International Microwave Symposium Digest (MTT), 2013To improve the performance of G-band equipment for humidity sounding of the atmosphere, a high-gain and low-noise amplifier is needed. Here we describe and report the performance of several low-noise amplifier microchips intended for 183-GHz water vapor profiling application.
Kärkkäinen, Mikko +11 more
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Compact Low-Noise Photonic Microwave Generation From Commercial Low-Noise Lasers
IEEE Photonics Technology Letters, 2017We demonstrate how phase-locking a whispering gallery mode-stabilized semiconductor laser to a high-stability Erbium-based distributed feedback fiber laser makes an outstanding optical reference for photonic microwave generation using an optical frequency comb. Using only commercially available compact lasers, it allows generation of a 12 GHz microwave
Bouchand, Romain +9 more
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Low noise multiwasher superconducting interferometer
Applied Physics Letters, 1998The dc-superconducting quantum interference device (SQUID) is a low-noise converter from magnetic flux to voltage which can have, in principle, an energy sensitivity near the quantum limit of ℏ/2. A critical parameter for the ideal performance is the device inductance, which must be kept as small as possible.
P Carelli +3 more
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A low noise 0.9 GHz FBAR clock
Analog Integrated Circuits and Signal Processing, 2005A low noise 0.9GHz FBAR clock consisting of an oscillator and divider circuit for single sided-to-differential conversion for high-speed A/D-converter was designed, realized with an in-house FBAR and a commercial 0.35 /spl mu/m CMOS process, and tested. The circuit showed very good jitter and phase noise performance.
Ylimaula, Miikka +5 more
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