I need a way to test LNBs for RX. The idea is to use an nonlinear element (diode) to generate the xx harmonic from the rf from a signal generator on a lower frequency. The diode is soldered to a sma forming a very small antenna (several om's have published this idea before but cant find the articles). This is to be used for tests over a few meters only.
What (available) microwave diode should/could I use?