thermal noise


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Related to thermal noise: Shot noise

thermal noise

n.
Unwanted noise in an electronic component arising from dark current or the agitation of electrons by heat. Also called Johnson noise.

thermal noise

n
(Electronics) electrical noise caused by thermal agitation of conducting electrons
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[[THETA].sub.k] (t) is the phase noise, [[eta].sup.UT.sub.t,k] (t) is the distortion noise from user k, [[eta].sup.BS.sub.r](t) is the distortion noise at the BS, and [[zeta].sup.UL](t) is the amplified thermal noise. Those noises are the characteristics of the hardware impairments that affect the uplink training phase.
The photodetectors in these cameras remain susceptible to thermal noise, however, and since the equipment required for cooling them is quite large, it became necessary to find a way to reduce the cameras to a practical size.
With the development of a sensor semiconductor structure that reduces the impact of thermal noise, Fujitsu Laboratories has made it possible to create handheld-sized, high-sensitivity infrared cameras.
Reduced thermal noise spikes eliminate false alarms during monitoring.
Single-crystal multilayer mirrors have extremely low defect densities, and therefore low susceptibility to thermal noise, a key property for precision metrology systems.
Major part of this noise originates from thermal noise and flicker noise (1/f noise) of active and passive devices that constitute the circuits.
The improved Duffing circuit designed in Figure 3 was simulated using Multisim circuit simulation software to test the parameter design of Figure 11 on the signal under test detection performance in the presence of noise signals generated by the thermal noise equation.
And on top of all this there is 'thermal noise' from the natural surroundings.
where [n.sub.Th] denotes thermal noise and [n.sub.sh] denotes shot noise.
One oddity was that the Pentax's Slow Shutter Speed Noise Reduction option took internal dark frames that were consistently only 75% of the duration of the light frames, compromising their ability to accurately reduce thermal noise.