Re: Best way to build fixed 1.6GHz locked oscillator?

Hi Chris,

I am planning to make it a VNA in a later stage. For now, I just need
something to check antennas, filters, etc. So a scalar analyzer with a
good return loss bridge will do OK.

After some thought & googling around, I'll just use the original
suggestion for now. Two identical VCOs + PLLs. So in effect, I am
optimising the design for speed & easiness :-). Not for cost or
performance...

I am aware that the mixer will produce various combinations of LO & IF
frequencies. I am hoping to optimise the power levels to get the 2nd
and 3rd harmonic down to -50dBc. That should be enough for return loss
measurement. For filter response measurements, this is probably not
good enough, so I am thinking about adding a switchable bank of low
pass filters at the output. But this is slightly messy, so I'll do it
later, and only if I convince myself that it's needed.

73
Fil
VK3FLP

.