Discussion:
about varactor simulation
(too old to reply)
balakrishna.k @nit calicut
16 years ago
Permalink
can any one help me to simulate varactor in cadence
i am designig a vco for 880M to 960Mhz ..
how to choose varactor charactrstics
and how to see the c-v characterstics .....
please help me....
Mobil
16 years ago
Permalink
Post by balakrishna.k @nit calicut
can any one help me to simulate varactor in cadence
i am designig a vco for 880M to 960Mhz ..
how to choose varactor charactrstics
and how to see the c-v characterstics .....
please help me....
Put a port on the gate of your varactor and run sp simulation, then
using this equation for capacitance calculation:
(imag(yp(1 1 ?result "sp")) / real(yp(1 1 ?result "sp"))).
If you sweep the voltage, you will get the curve you want.
Mobil
16 years ago
Permalink
Post by Mobil
Post by balakrishna.k @nit calicut
can any one help me to simulate varactor in cadence
i am designig a vco for 880M to 960Mhz ..
how to choose varactor charactrstics
and how to see the c-v characterstics .....
please help me....
Put a port on the gate of your varactor and run sp simulation, then
(imag(yp(1 1 ?result "sp")) / real(yp(1 1 ?result "sp"))).
If you sweep the voltage, you will get the curve you want.
Sorry, above is the calculation for Q.
For the cap value, the equation is (imag(yp(1 1 ?result "sp")) / (2 *
pi * xval(yp(1 1 ?result "sp"))))

Loading...