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categoryهندسة كهربائية
schoolبكالوريوس
event_available2026-07-14
السؤال
Transcribed Image Text:
1. You are given the following information about a printed circuit board: 1/32-inch thick FR-4 fiberglass with a relative
dielectric constant of 5.2; the board is covered with 1/2-oz copper plating; the trace width is 12 mils; the other side of the
board is covered with a copper ground plane.
(a) What is the DC resistance per length of trace in milli-ohms/inch?
(b) What is the approximate resistance per length of trace in milli-ohms/inch at a frequency of 1GHz?
(c) What is the capacitance per length of trace in pF/inch?
(d) What is the characteristic impedance of the trace in ohms?
(e) What is the velocity of a wave on the trace in meters/second?
(f) What is the propagation delay TPD in ps/inch?
(g) How long is one wavelength on the trace at a frequency of 1GHz?
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