SWR circles are also provided for the sake of illustration. Notice that the location of the marker is independent of grid type,Īnd only the Smith Chart grid enables reading the load impedance (ZL) by inspection. The Smith Chart achieves this by superimposingĪ grid on S11 that maps load impedance. Normalized to Z0 (source impedance = center of chart). The Smith Chart graphically maps S11=reflection coefficient=(ZL-Z0)/(ZL+Z0) to Load Impedance (ZL), Y and Delta Network Transformation Calculator Y Impedance, R1 (Ohms) =ġ:N Resistive Splitter Calculator Port Characteristic Impedance, Zo (Ohms) = Port 2 Characteristic Impedance, Z2 (Ohms) = The Smith chart also can be used with admittance (Y), susceptance (B), and conductance (G), with units in siemens (S): G 1/R B 1/X Y 1/Z Such a chart is a mirror image of the standard chart shown here. Pi and Tee Attenuator Pad Calculator Port 1 Characteristic Impedance, Z1 (Ohms) = %Tolerance indicates the additional +/- part to psrt Note: %Error indicates the nominal difference to the Vout %Tol (From 0.1% Component Tolerance) = Vout %Tol (From 1% Component Tolerance) = Tpd (unloaded propagation delay, ps/unit len) = Use the reflection coefficient calculator to find the value of the reflection coefficient just by using the load impedance and characteristic impedance of any RF transmission line. Inch Zo (unloaded trace impedance, Ohms) = Polar or rectangular grids only allow direct reading of S11. Note: FR4 Thermal conductivity = 0.24 to 0.34 W/(m.K)Ĭapacitively Loaded Transmission Line Calculator The Smith Chart achieves this by superimposing a grid on S11 that maps load impedance. Note: valid for w>h and len>h (excludes fringing capacitance) Lumped element and transmission line impedance matching would. Pad Capacitance and Thermal Resistance Calculator Smith Chart is a handy tool that we use to visualize impedances and reflection coefficients. Note: valid for w>h and len>h, includes fringing capacitance Note: valid for (w/h) from 0.1 to 2.0 and (t/h) less than 0.25ĭifferential Stripline Impedance Calculatorĭifferential Stripline From Zo Impedance CalculatorĪsymmetric Stripline Impedance Calculatorīroadside Coupled Stripline Impedance Calculator w (trace width) =ĭifferential Microstrip Impedance Calculatorĭifferential Microstrip Impedance From Zo Calculator Mitered bends are used to compensate for the impedanceĭiscontinuity of the bend. Note: Calculations assume zero coil resistance SI and SGS Magnetic Units Mutual and Leakage Inductance L1 (Inductance, uH) = Rdc (DC Resistance, copper, no leads, mOhm) = If you have any suggestions for improvement please email This email address is being protected from spambots. These calculators are used by Mantaro engineers and provided freely for your use.
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