Here you can find some interesting designs for 24 GHz

Omni antenna, used for the PA0EHG 24 Ghz beacon for many years

24 GHz feed for an offset antenna with F/D of 0.6

Dual band high performance 10/24 GHz feed

making power 12 Watt output using a Hughes 18 GHz instrumentation TWT

The Microwave Activity Group is stimulating home build activities for 24 GHz.

An easy way to build equipment for 24 GHz is to start with DB6NT designs which have proven to work well.

In this picture you see the 24 GHz amplifier with 3 stages with the last stage two fets in parallel. The fets are MGF1303 which can easily be sold. The output of this amplifier is arround 100 mW with a total gain of arround 20 dB.

Information on these designs can be found in DUBUS or via DB6NT:
go to home page of DB6NT