Waveguide filter for 24GHz transverter
Status: Ready 19990724
Here is the filter mounted on the transverter. I added two tuning screws to the design shown below. There only seems to be a sharp reasonance in one the two cavity cambers, but it seems to provide sufficient selection, as the LO is at least 40 dB down.
I have not yet been able to measure image rejection, but judging from varying the IF frequency, the roll-off is much sharper than required, keeping in mind that the image is 2 * 432 MHz away.
