How does a Smith Chart work? -...
Transcript of How does a Smith Chart work? -...
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How does a Smith Chart work?
Microwave Engineering
http://sss-mag.com/pdf/smith_chart_basics.pdf
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Smith Chart
Fig. 1
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Smith Chart
Fig. 2
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Smith Chart
Fig. 3
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SmithChart
Fig. 4
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Smith Chart
Fig. 5
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Smith Chart
Fig. 6
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Smith Chart
Fig. 7
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Smith Chart
Fig. 8
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Smith Chart
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Smith Chart
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Smith Chart
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Smith Chart: Scale• Wavelength Scale
• Degree Scale
• Reflection: REFL. COEF (VOL, PWR); Loss in dB (RETN, REFL)
• Transmission Loss: LOSS COEF., 1 dB steps
• Standing Wave: VOL. RATIO, IN DB
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Smith Chart
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Smith Chart: Radial Scale
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Smith Chart: ZY
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Applications of Smith Chart
• I/P Imp Z_IN using a known load Z_L
• I/P Imp using I/P reflection coeff<1
• I/P Imp using I/P reflection coeff>1
• Admittance from Imp
• Value and location of Z_max and Z_min from known Z_L
• Imp using single stubs
• Lumped: Series & Shunt
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Applications of Smith Chart
• Admittance from Impedance
• Y_N is located 180 deg opposite to Z_N on VSWR circle
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Applications of Smith Chart
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Applications of Smith Chart
• Z-Y Conversion
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Applications of Smith Chart
• Value and Location of Z_max and Z_min from a known load Z_L.
• Max I/P Z_max occurs when Numerator is max and denominator is min
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Applications of Smith Chart
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Applications of Smith Chart
• Input Impedance using single Stubs
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Applications of Smith Chart
• For parallel Stubs
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Applications of Smith Chart
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Applications of Smith Chart
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Applications of Smith Chart
• Series Stubs:
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Applications of Smith Chart
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Applications of Smith Chart
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Applications of Smith Chart
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Applications of Smith Chart
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Applications of Smith Chart
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Applications of Smith Chart
• Smith Ch for Lumped Elements CKT
• I/P Imp for a series lumped element
Z Chart, since series
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Applications of Smith Chart
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Applications of Smith Chart
• I/P Admittance For a shunt lumped element
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Applications of Smith Chart