mixer performances relative frequency !

[nassim1]

Hello all,

Is there someone who knows how can we know mixer performances realtive to frequency design?,
i.e, how much conversion loss in increasing a frequenycy ?

for example at 10 GHz, how much should conversion loss be ?

and so on ......

thankx
N

 

[vfone]

Maximum allowed insertion loss of the passive mixer (whatever working frequency) is given by the RF system and budget analysis.
Generally insertion loss of passive mixers is in the range 6dB to 15dB.

 

[nassim1]

Thank you for replying me.

but are you sure is not depends on working frequency.......

 

[vfone]

The RF system budget analysis is independent by frequency, but of course at high frequencies is hard to meet other parameters that affect the budget, as noise figure and gain.
So, depending of your system specification you allocate for each block: gain (or loss), noise figure, linearity, etc.

 

[nassim1]

Well, if we get for example conversion loss (or gain) >>15 dB how can we reduce it ? even how can we improve isolation ports?
thank you