IF port termination for HMC1056 and HMC8191

Hi,

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?

Thanks.