Question: A backplane stripline bus measures 15" from end to end. Six equally-spaced inputs circuits are wired to the bus, each of which has a loading capacitance of 5 pF. The unloaded characteristic impedance of the bus, Zo, is 100 11, and its propagation delay is 2.0 nsift.
a. What is the loaded characteristic impedance of the bus?
b. Suppose that an engineer terminates the bus by its unloaded characteristic impedance. What will the resulting reflection coefficient be?
c. If a designer wishes to use this bus without termination, what is the fastest rise time of bus drivers that can be tolerated?