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PCB calculator

Jay Chang

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Stripline model給線寬W, height b, ��,求Z0

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Stripline model給Z0, height b, ��,求線寬W

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Stripline modelperturbation method求loss� = conductorloss + dielectricloss

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Microstrip modelFor low frequency and DC (for infinitely thin conductors)

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Microstrip model給線寬W, height d, ��,求Z0 (for infinitely thin conductors)

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Microstrip model給Z0, ��,求W/d (for infinitely thin conductors)

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perturbation method求loss� = conductorloss + dielectricloss

Microstrip model

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Microstrip model給線寬W, height h, ��,求Z0 and ��

(for finite thickness)

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Microstrip modelFrequency-Dependent Effects

For example:

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http://www.desmith.com/NMdS/Electronics/TraceWidth.html

http://wcalc.sourceforge.net/cgi-wcalc.html

Good website

� 算最大電流附載線寬(including temp)

� 算microstrip等效RLC model

reference

� Pozar, Microwave Engineering 4th Edition

� Hall, Advanced Signal Integrity For High-Speed Digital Designs

CAD tools

� TXLINE (NI AWR)

� AppCAD (Agilent)

� Python verification for freq-dependent