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Friis formula or Friis's formula (sometimes Friis' formula), named after Danish-American electrical engineer Harald T. Friis, is either of two formulas used in telecommunications engineering to calculate the signal-to-noise ratio of a multistage amplifier. One relates to noise factor while the other relates to noise temperature.
The Friis transmission formula is used in telecommunications engineering, equating the power at the terminals of a receive antenna as the product of power density of the incident wave and the effective aperture of the receiving antenna under idealized conditions given another antenna some distance away transmitting a known amount of power. [1]
The noise power from a simple load is equal to kTB, where k is the Boltzmann constant, T is the absolute temperature of the load (for example a resistor), and B is the measurement bandwidth. This makes the noise figure a useful figure of merit for terrestrial systems, where the antenna effective temperature is usually near the standard 290 K ...
"Linus and Lucy" is a popular instrumental jazz standard written by American jazz pianist Vince Guaraldi. It serves as the main theme tune for the many Peanuts animated specials and is named for the two fictional siblings, Linus and Lucy Van Pelt .
Love Will Come: The Music of Vince Guaraldi, Volume 2 is the 16th album by pianist George Winston and 12th solo piano album, released on February 2, 2010. The album is a follow-up to the well-received 1996 tribute album highlighting much of Guaraldi's Peanuts works, Linus and Lucy: The Music of Vince Guaraldi .
The noise factor (a linear term) is more often expressed as the noise figure (in decibels) using the conversion: = The noise figure can also be seen as the decrease in signal-to-noise ratio (SNR) caused by passing a signal through a system if the original signal had a noise temperature of 290 K. This is a common way of expressing the noise ...
All About Jazz critic James Aren remarked that Guaraldi's "creative process is fully displayed here through multiple takes of various tracks," highlighting that it is evident Guaraldi and his band approached the music with seriousness, even while having fun. Aren further noted that, although true jazz enthusiasts might find the short cues ...
Download as PDF; Printable version; In other projects Wikidata item; ... Friis formulas for noise; Friis transmission equation This page was last edited on ...
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