Microstrip impedance - F6CSX

Constant. (W/d). Constant. Impedance. 4.8. 0.5. 3.28. 92.1. 4.8. 0.8. 3.38 ... 62.5. 4. 1.5. 3.00. 60.2. 4. 1.6. 3.01. 58.1. For further details on those formulas please ...
28KB taille 3 téléchargements 592 vues
    

εe =

εr + 1 ε r − 1 + ⋅ 2 2

1 1 + 12 d / W

  W  60 ⋅ ln  8 d + W  fo r W  εe d 4d   Z0 =   W 120 π  for d W  W   ε e ⋅  d + 1.393 + 0 .667 ⋅ ln  d + 1.444   

For further details on those formulas please refer to: I.J. Bahl and D.K. Trivedi, "A Designer's Guide to Microstrip Line", Microwaves, May 1977, pp. 174-182

Dielectric Constant 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4 4 ≤1 4 4 4 ≥1 4 4 4 4 4 4 4 4 4 4 4 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55 2.55

Width/Height (W/d) 0.5 0.8 1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.2 2.5 3 4 0.5 0.8 1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.2 2.5 3 4 0.5 0.8 1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.2 2.5 3 4

Effective Dielectric Constant 3.28 3.38 3.43 3.47 3.49 3.51 3.53 3.55 3.57 3.59 3.60 3.62 3.65 3.69 3.75 3.85 2.80 2.88 2.92 2.95 2.97 2.98 3.00 3.01 3.03 3.04 3.05 3.07 3.09 3.12 3.17 3.25 1.93 1.97 1.99 2.01 2.02 2.03 2.03 2.04 2.05 2.05 2.06 2.07 2.08 2.10 2.12 2.16

Characteristic Impedance 92.1 75.8 68.1 62.4 59.9 57.6 55.5 53.6 51.7 50.0 48.5 47.0 44.3 40.8 36.1 29.5 99.7 82.2 73.9 67.7 65.0 62.5 60.2 58.1 56.2 54.3 52.6 51.0 48.1 44.4 39.3 32.1 120.1 99.3 89.4 82.1 78.8 75.9 73.2 70.6 68.3 66.1 64.1 62.2 58.7 54.1 48.0 39.3

13 TECHNICAL NOTES AND ARTICLES



13-3