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IT 327 - Schweber Chap 7 1
Thought of the Day
Getting our hearts right is much more important than getting the answers right.
- Alan L. WilkinsAcademic V.P., BYU
Dec 5, 1995 Devotional
IT 327 - Schweber Chap 7 2
Schweber, Chap 7:Wire and Cable Media
IT 327 - Schweber Chap 7 3
Wire and Cable Model Parameters
IT 327 - Schweber Chap 7 4
Single-Ended or Unbalanced Lines
IT 327 - Schweber Chap 7 5
Line Drivers
IT 327 - Schweber Chap 7 6
Line Drivers
IT 327 - Schweber Chap 7 7
Differential or Balanced Lines
IT 327 - Schweber Chap 7 8
Differential or Balanced Lines & CMRR
CMRR = Common Mode Rejection RatioTypically 60 – 120 dB (voltage)
IT 327 - Schweber Chap 7 9
Regenerating Receivers
IT 327 - Schweber Chap 7 10
Regenerating Receivers
IT 327 - Schweber Chap 7 11
Coaxial Cable & Velocity of Propagation
Characteristic
IT 327 - Schweber Chap 7 12
Characteristic Z (Zo)
𝑍 𝑜=√ 𝑅+ 𝑗2 π 𝑓 L𝐺+ 𝑗2 π 𝑓 C
𝑍 𝑜≈ √ 𝐿𝐶Assume: R << XL, and G << XC:
𝑍 𝑜≈ √ 𝑗 2π 𝑓 L𝑗2π 𝑓 C
IT 327 - Schweber Chap 7 13
Reflections on Reflections
