Response to the following :
In the circuit shown in Figure, I is a dc current and vi is a sinusoidal signal with small amplitude (less than 10 mV) and a frequency of 100 kHz. Representing the diode by its small-signal resistance rd , which is a function of I, sketch the small-signal equivalent circuit and use it to determine the sinusoidal output voltage Vo, and thus find the phase shift between Vi and Vo.
Find the value of I that will provide a phase shift of -45°, and find the range of phase shift achieved as I is varied over the range of 0.1 times to 10 times this value.
