Kim Soo Hwan
Newbie level 3

Help me~
I'd like to make the circuit which capacitance are varying by the frequency.
I tried to make that by some capacitors and resistors but failed.
For example,
Freq 1k 100k 10Meg
Capacitance 0.99pF 0.96pF 0.93pF
Is the circuit possible to meet this specification.
If not, the inductor can be used.
Especially, I'd like to make this circuit by R,C or R,L,C elements.
ps) In fact, these are for some modeling inside the chip.
Anyway, is there any method to model this effect by using the basic element.

I'd like to make the circuit which capacitance are varying by the frequency.
I tried to make that by some capacitors and resistors but failed.
For example,
Freq 1k 100k 10Meg
Capacitance 0.99pF 0.96pF 0.93pF
Is the circuit possible to meet this specification.
If not, the inductor can be used.
Especially, I'd like to make this circuit by R,C or R,L,C elements.
ps) In fact, these are for some modeling inside the chip.
Anyway, is there any method to model this effect by using the basic element.
Last edited: