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| R2012a Documentation → RF Blockset | |
Learn more about RF Blockset |
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Ladder Filters sublibrary of the Physical library
The LC Bandpass Tee block models the LC bandpass tee network described in the block dialog box, in terms of its frequency-dependent S-parameters.
For each inductor and capacitor pair in the network, the block first calculates the ABCD-parameters at each frequency contained in the vector of modeling frequencies. For each series pair, A = 1, B = Z, C = 0, and D = 1, where Z is the impedance of the series pair. For each shunt pair, A = 1, B = 0, C = Y, and D = 1, where Y is the admittance of the shunt pair.
The LC Bandpass Tee block then cascades the ABCD-parameters for each series and shunt pair at each of the modeling frequencies, and converts the cascaded parameters to S-parameters using the RF Toolbox abcd2s function.
See the Output Port block reference page for information about determining the modeling frequencies.
The LC bandpass tee network object is a two-port network as shown in the following circuit diagram.
[L1, L2, L3, L4, ...] is the value of the 'L' property, and [C1, C2, C3, C4, ...] is the value of the 'C' property.
Vector containing the inductances, in order from source to load, of all inductors in the network. The inductance vector must contain at least three elements. All values must be strictly positive.
Vector containing the capacitances, in order from source to load, of all capacitors in the network. Its length must be equal to the length of the vector you provide in the Inductance parameter. All values must be strictly positive.
For information about plotting the filter parameters, see Plotting Model Data.
See the LC Bandpass Pi block for an example of an LC filter.
[1] Ludwig, Reinhold and Pavel Bretchko, RF Circuit Design: Theory and Applications, Prentice-Hall, 2000.
[2] Zverev, Anatol I., Handbook of Filter Synthesis, John Wiley & Sons, 1967.
General Passive Network, LC Bandpass Pi, LC Bandstop Pi, LC Bandstop Tee, LC Highpass Pi, LC Highpass Tee, LC Lowpass Pi, LC Lowpass Tee, Series C, Series L, Series R, Series RLC, Shunt C, Shunt L, Shunt R, Shunt RLC
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