sat receiver?

0 ⤊

A sat receiver has an equivalent noise input resistance of 50 ohms. If it operates with abandwidth of 50 khz at a temp of 20 degrees c what is the effective noise voltage at the imput of the receiver . boltzman's constant 'k' is 1.38 x 10 power -23 j/k

2006-08-24 00:15:51 · 3 answers · asked by servalan 1 in Science & Mathematics ➔ Engineering

3 answers

2006-08-24 00:18:38 · answer #1 · answered by gnyla 2 · 0⤊ 1⤋

The equivalent noise voltage for a resistor is given by

v=sqrt(4*k*T*F*R)

where k = Boltzman's const
T= temp in degK
F=frequency bandwidth
R=resitance (ohms)

From this you get a noise voltage (rms) of 0.2 microvolt

2006-08-25 02:38:57 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋

what could you repeat the question in understandable English!

2006-08-24 07:22:13 · answer #3 · answered by leigh 2 · 0⤊ 1⤋