Signal Integrity Flashcards
1
Q
What is knee frequency?
A
The estimated highest frequency in a signal.
2
Q
What is the formula for calculating knee frequency?
A
f = 0.5/t(10 to 90 percent)
3
Q
What is the formula for power ratio?
A
P = 10log (P1/P2)db
if using voltages
P = 20log(V1/V2)db
4
Q
What is the purpose of scaling?
A
To increase power efficiency and reduce signal loss?
5
Q
What is the formula for voltage reflection coefficient?
A
gamma = V- / V+
6
Q
What is VSWR and what is the formula for it?
A
Voltage Standing Wave Ratio
Vmax/Vmin = (1 + gamma) / (1 - gamma)
