Problem with diode starting low in pin diode limiter design

Hello!

I′d like to design a limiter with pin diodes. When I use two pin diodes (without active biasing) the point at which limitation starts is to low. The limitation begins at 5dbm - I need it at 30 dbm.
How can I solve the problem? Any usefully documents?

nice greeting :)

Try the links below for application notes.

As for diode choice, that depends on your frequency range and manufacturing techniques. The diode manufacturer's applications departments would be a good place to start.

http://www.edn.com/article/CA486567.html

Microsemi PIN diode handbook
http://www.qsl.net/n9zia/pdf/pin_diode_handbook.pdf
Mainly switches

Google Agilent Application note 1050

Peter

You need a diode with a thicker I region.

Can't work without reverse biasing the diodes.

You can use a coupler with 25dB coupling then limit

good idea