Hi,

I'm looking for a circuit that is called "RF clamp", "RF limiter", "voltage clamp" or "voltage limiter".
The example of such circuit is a transistor Q on this picture: http://i.stack.imgur.com/j8EGx.jpg

However, what I need is a full RF clamp circuit. Not only the transistor shown in the example above. The gate bias of this transistor would be very useful.

I cannot find many of such circuits. Often, they are stacked diodes on antenna lines or diodes + resistor to bias transistor clamp.

Do you know where I could find good examples? Any books, websites?