[amsat-bb] Frequency Doubler?

[Robert Bruninga]

Does anyone remember how to make a High level frequency doubler?  I need
some energy on 902 MHz, and wonder about just blasting some diodes with a
451 MHz transmitter? (followed of course by a filter)...

Seems like a full wave rectifier would give a strong 2X frequency component?

I wonder if 1N4005's would do?  At 50W input the capacitance per diode is
around 1 pF
Bob, WB4APR