Basic electronic structures

Passive high-pass filter with adjustable DC level

Transfer function: $H (j ω) = \frac{j \frac{ω}{ω_{c}} + V_{D C}}{1 + j \frac{ω}{ω_{c}}}$

DC level: $V_{D C} = \frac{V_{d d} . R_{2}}{R_{1} + R_{2}}$

Cut-off frequency: $f_{c} = \frac{1}{2 π . (R_{1} ∥ R_{2}) C}$