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The loss tangent is defined by the angle between the capacitor's impedance vector and the negative reactive axis. When representing the electrical circuit parameters as vectors in a complex plane, known as phasors , a capacitor's loss tangent is equal to the tangent of the angle between the capacitor's impedance vector and the negative reactive ...
The loss tangent is defined by the angle between the capacitor's impedance vector and the negative reactive axis. If the capacitor is used in an AC circuit, the dissipation factor due to the non-ideal capacitor is expressed as the ratio of the resistive power loss in the ESR to the reactive power oscillating in the capacitor, or
Dielectric loss tangent is the same as dissipation factor but I am not sure about loss tangent on its own. —Preceding unsigned comment added by 90.209.185.205 17:14, 9 April 2009 (UTC) Rather than lumped in with Loss Tangent, this article should be expanded. The lumped element model given for the capacitor shows resistance in series.
In transmission line theory, α and β are counted among the "secondary coefficients", the term secondary being used to contrast to the primary line coefficients. The primary coefficients are the physical properties of the line, namely R,C,L and G, from which the secondary coefficients may be derived using the telegrapher's equation .
The diode equation above is an example of an element constitutive equation of the general form, (,) = This can be thought of as a non-linear resistor. The corresponding constitutive equations for non-linear inductors and capacitors are respectively; (,) = (,) =
In telecommunications, the free-space path loss (FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). [1]
Each dielectric material generally has a published loss tangent associated with it. For example, the common dielectric material is alumina has a published loss tangent of 0.0002 to 0.0003 depending on the frequency. [42] Welch and Pratt, and Schneider proposed the following expressions for attenuation due to dielectric losses.: [43] [44] [38]
There are several approaches to understanding reflections, but the relationship of reflections to the conservation laws is particularly enlightening. A simple example is a step voltage, () (where is the height of the step and () is the unit step function with time ), applied to one end of a lossless line, and consider what happens when the line is terminated in various ways.