passive mixer matching network designing problem

[rakesh228]

hi ...
i am designing a fet resistive mixer, i completed RF filter, IF filter and gate biasing the fet transistor. But i dont knw hw to design a matching network for Rf port and IF port. Please give me some idea how to design matching networks....

 

[pavel_adameyko]

Hi
At first you should measure input impedances of your RF and IF port. Could you clarify more your mixer's structure and what are RF and IF frequencies.
Regards.

 

[rakesh228]

i am designing a passive resistive fet mixer. RF-15-16GHZ, LO-14.5GHZ, IF-0.5-1.5GHZ

 

[vfone]

Usually resistive FET mixers use balun transformers (microstrip baluns for higher frequencies), and they are designed to be terminated in 50 ohms.