RF multipliers input problem

I need help regarding passive RF multipliers.

please consider the following situation.

Multiplier used KSX2-722+ from minicircuits.

input to multiplier is 1680MHz with power level of 10dBm anlong with 2520MHz component at -30dBm

will there be any affect of the 2520MHz component at the output?

Probably not, but if there is you can add a lowpass filter and then a 2 dB pad at the front of the multiplier. The only effect could be conversion loss flatness as the frequency is swept.

Thanx for the reply,

could you be more specific, i am new to the RF circut design.

need clarification with "frequency being swept"

Other parameter of the multiplied signal which is affected by frequency multiplication, is the phase noise.

Phase Noise degradation[dB] = 20*LOG (N)

So, a frequency doubler (N=2) will degrade the phase noise of the signal by 6dB.

2 x 1680 is 3360 mhz. At the least, you will have spurs at the output of 2520 and 4200, and probably other spurs. I thought you were originally talking about a 2nd harmonic at the input, but either you changed your post or I misread it, so forget about the frequency sweeping.

2520 -1680 will give sidebands at +/- 840 mhz from the output carrier.

may be i am not clear with the question,

please consider the following scenario.

Input to multipler: 1680MHz at 10dBm along with 2050MHz component at -30dBm

my question is that ,will the 2050 component get multiplied along with the 1680MHz signal or the conversion loss of the multiplier will take care as to remove the 2050MHz component from affecting the output.

Thnx

The best fit with actual lab measurements is when you treat the input as a ssb modulating tone on the input. ssb is half AM and half PM. The deviation rate does not change as you multiply it, but the level does. So a spur 840 MHz away on the input will also be a spur 840 away on the output, but around 6 dB higher after the x2 multiplier. Also, it is likely to show up on both sides of the output carrier.

I would expect the spur levels around -40 dBc (related to the 3360 MHz main component).

Thx everyone for your help