This is crucial to the approximation because it allows us to ignore the series impedance since it is assumed that no current passes through this impedance.
2.
In this model, the series impedance and the shunt admittance are considered, with half of the shunt admittance being placed at each end of the line.
3.
As the current is the same, the radiation resistance ( real part of series impedance ) will be half of the series impedance of a half-wave dipole.
4.
As the current is the same, the radiation resistance ( real part of series impedance ) will be half of the series impedance of a half-wave dipole.
5.
Inverters are classified as " K "-inverters or " J "-inverters depending on whether they are inverting a series impedance or a shunt admittance.
6.
The diagrams show this result : an infinite chain of L-sections is identical to an infinite chain of alternately reversed half-sections except for the value of the initial series impedance.
7.
The building block of constant k filters is the half-section " L " network, composed of a series impedance " Z ", and a shunt admittance " Y ".
8.
These add a high series impedance ( in contrast to the low parallel impedance added by decoupling capacitors ) to the power supply rails, preventing high-frequency currents being drawn from elsewhere in the system.
9.
There are two classes of inverter, the " J "-inverter, which transforms a shunt admittance into a series impedance, and the " K "-inverter which does the reverse transformation.
10.
The building block of m-derived filters, as with all image impedance filters, is the " L " network, called a half-section and composed of a series impedance " Z ", and a shunt admittance " Y ".
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