(Solved):   2. Determine the noise current and equivalent noise voltage for a diode with forward bias ...

 

2. Determine the noise current and equivalent noise voltage for a diode with forward bias of \( 1 \mathrm{~mA} \) over a \( 100 \mathrm{kHz} \) bandwidth. Note: the dynamic resistance of a diode is approximately \[ R_{j}=\frac{25 m V}{I_{d c}} \] WPU-QSF-ACAD-82A Rev. oo (o9.15.20) 27 3. Suppose the noise power at the input to a receiver is \( 23 \mathrm{nW} \) in the bandwidth of interest. What would be the required signal power for a signal-to-noise ratio of \( 45 \mathrm{~dB} \) ? 4. Compute the noise figure of a receiving system with a noise temperature of \( 150^{\circ} \mathrm{C} \)