The IF bandwidth for HMC1056 is DC to 4GHz and HMC8191 is DC to 5GHz.
We would like to know how the IF ports are internally terminated for both the HMC1056 and HMC8191 I/Q mixer beyond the specified IF bandwidth in the data sheet.
Our main concern is the frequencies such as 2xLO and IF+2xLO frequencies. Does user need to provide a current path for this particular frequency externally?
The impedance of the IF ports is 50 ohm when the LO signal at the correct amplitude is applied.
The spur tables on both datasheets provide the spurious performance for each part.
I don't understand…
I don't understand this question really well: "Does user need to provide a current path for this particular frequency externally?". Could you explain further?