types of planar capacitors

Hi,

does anyone can share the commonly available planar capacitors other than interdigital capacitor?

Thanks...

MIM capacitor (metal-insulator-metal) as used in integrated circuits.

This is simply a parallel plate capacitor with a thin isolator between the plates. For PCB, the typical dielectric is rather thick, so that the capacitance values are small. But if you need small capacitance values, this might be an option.

volker_muehlhaus,

do you know how to design MIM capacitor using ADS software?
is there any other planar capacitor?

thanks....

You need to do momentum analysis for MIM capacitors. design and opt the shapes to get your targets.

To get started, just use parallel plate capacitor equation and calculate the area that you need for a given C value.

To include the distributed effect, you can use a circuit model for broad side coupled lines. Maybe the SBCLIN will work, if you use a large value for S.

As Tony said, you can also use Momentum or another EM simulator for the final analysis.

thanks... that is really helpful. now i can design my MIM capacitor.

what about patch capacitor? i have no idea how to start designing the patch capacitor.

That's just another word for MIM capacitor.

oooo.... tq!