"Determination of T1 matrix parameters"

Determination of T1 matrix parameters

Test circuit

T1 matrix of the Device Under Test (DUT)

The T1 matrix of the device under test is found as:

\begin{equation} T_{1}=\left[\begin{matrix}0 & 0\\C & D\end{matrix}\right] \end{equation}

The matrix equation of the DUT is found as:

\begin{equation} \left[\begin{matrix}V_{i}\\I_{i}\end{matrix}\right]=\left[\begin{matrix}0\\C V_{o} + D I_{o}\end{matrix}\right] \end{equation}

The source-to-load transfer is obtained as:

\begin{equation} A_{v}=\frac{C_{A} R_{\ell} s}{C R_{\ell} + D} \end{equation}

The input impedance of the DUT is found as:

\begin{equation} z_{i}=0 \end{equation}

The output impedance of the DUT is found as:

\begin{equation} z_{o}=\frac{D}{C} \end{equation}

Numeric values

The numeric values are obtained after solving the equations for $A_v$ and $z_o$ for the target values given below.

The target value of the source-load voltage transfer $A_v$ is:

\begin{equation} A_{v}=1 \end{equation}

The target value of the output impedance $z_o$ is:

\begin{equation} z_{o}=50 \end{equation}

The antenna capacitance $C_A$ equals:

\begin{equation} C_{A}=6.3 \cdot 10^{-12} \end{equation}

The required parameters of the T1 matrix of the DUT are obtained as:

\begin{equation} T_{1}=\left[\begin{matrix}0 & 0\\3.15 \cdot 10^{-12} s & 1.575 \cdot 10^{-10} s\end{matrix}\right] \end{equation}

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Last project update: 2022-04-01 07:30:35