DARTS

Engineering Section

Microstrip Facts & Figures


Microstripline Parameters

Rogers RO-4003
0.020 thick
Er=3.38
tan(loss) = 0.026

50-ohm line

0.115 cm = 0.045 in wide
Loss: 0.0376 dB/in = 0.0954 dB/cm

75-ohm line

0.054 cm = 0.022 in wide
Loss: 0.0386 dB/in

77-ohm line



Transforms 120-ohm (nominal patch edge impedance) into 50-ohm
0.019 in wide

100-ohm line

0.026 cm = 0.010 in wide
Loss:  0.0436 dB/in = 0.0110 dB/cm

Wavelengths - 5.760 GHz

  • Full: Freespace=5.2083 cm Guide=2.833 cm
  • Half: Guide=0.558 in
  • Quarter: Guide=0.279 in


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    This document copyright Steve Bragg, KA9MVA. Updated: Sept 13, 1998