Which of the following transformation between the z (impedance) and h (hybrid) parameters is correct?
1
\( \begin{bmatrix} \rm \frac{h_{11}h_{22}-h_{12}h_{21}}{h_{22}}&\rm \frac{h_{12}}{h_{22}} \\\ \rm \frac{h_{21}}{h_{22}}&\rm \frac{1}{h_{22}} \end{bmatrix}\)
2
\( \begin{bmatrix} \rm \frac{h_{11}h_{22}-h_{12}h_{21}}{h_{22}}&\rm \frac{h_{12}}{h_{22}} \\\ \rm \frac{-h_{21}}{h_{22}}&\rm \frac{1}{h_{22}} \end{bmatrix}\)
3
\( \begin{bmatrix} \rm \frac{h_{11}h_{22}-h_{12}h_{21}}{h_{22}}&\rm \frac{h_{12}}{h_{22}} \\\ \rm \frac{-h_{21}}{h_{22}}&\rm \frac{-1}{h_{22}} \end{bmatrix}\)
4
\( \begin{bmatrix} \rm \frac{h_{11}h_{22}-h_{12}h_{21}}{h_{22}}&\rm \frac{-h_{12}}{h_{22}} \\\ \rm \frac{-h_{21}}{h_{22}}&\rm \frac{1}{h_{22}} \end{bmatrix}\)