Microwaves101.com (Testimonial)

“It is common knowledge that a switch field-effect transistor (FET) can act as either a resistor or capacitor (at least between the drain and source terminals), but are two elements really enough to model it? Microwaves101.com doesn’t think so, and developed a lumped-element model using Microwave Office software to show the parasitics that matter in a switch design.”

Read the tutorial at Microwaves101.com: http://www.microwaves101.com/encyclopedias/microwave-fet-tutorial