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Reference.org
Impedance parameters
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<p>Impedance parameters or Z-parameters (the elements of an impedance matrix or Z-matrix) are properties used in <a href="/facts/Electrical_engineering/YYXW1KLW">electrical engineering</a>, <a href="/facts/Electronic_engineering/WCSVulpu">electronic engineering</a>, and <a href="/facts/Communications_system/5t3Ys2DI">communication systems</a> engineering to describe the electrical behavior of <a href="/facts/Linear/fChtg3KC">linear</a> <a href="/facts/Electrical_network/zt94kTW0">electrical networks</a>. They are also used to describe the <a href="/facts/Small-signal/P3VYrx4K">small-signal</a> (<a href="/facts/Linearization/ohYSeQR3">linearized</a>) response of non-linear networks. They are members of a family of similar parameters used in electronic engineering, other examples being: <a href="/facts/S-parameters/z6ffeKh6">S-parameters</a>, <a href="/facts/Y-parameters/0PJ6u6IH">Y-parameters</a>, <a href="/facts/Two_port/cqUrBTYq">H-parameters</a>, <a href="/facts/T-parameters/z6ffeKh6">T-parameters</a> or <a href="/facts/Two-port_network/cqUrBTYq">ABCD-parameters</a>. </p><p>Z-parameters are also known as <i>open-circuit impedance parameters</i> as they are calculated under open circuit conditions. i.e., Ix=0, where x=1,2 refer to input and output currents flowing through the ports (of a <a href="/facts/Two-port_network/cqUrBTYq">two-port network</a> in this case) respectively. </p>