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-=====Admittance inverter=====
-An admittance inverter changes an output admittance $Y_{out}$ to its inversely proportional value $Y_{in}$, multiplied by a value B²:
-$$Y_{in}=\frac{B^2}{Y_{out}}$$
-B is a susceptance, and is called the characteristic admittance of the inverter.
-Different options exist to realize an admittance inverter, of example:
-{{ :admittance_inverter_general_example.png?400 |}}
-The susceptance B can be an inductance or a capacitance. For example, when we choose a capacitor, B equals $\omega C$ and we get the following circuit. (Note: a negative capacitance corresponds to an inductance, i.e., a coil instead of a capacitor).
-{{ :admittance_inverter_pi-c-network.png?400 |}}
-$$\begin{bmatrix}
-& \frac{-j}{\omega C}\\-j \omega C & 0
-\end{bmatrix}$$
-{{ :admittance_inverter_pi-l-network.png?400 |}}
-{{ :admittance_inverter_T-l-network.png?400 |}}
-{{ :admittance_inverter_T-c-network.png?400 |}}
-Reference: Tosic, D. V., & Potrebic, M. (2006). Symbolic analysis of immittance inverters, 14th Telecommunication Forum. Belgrade (Serbia), 21-23.