The HMC1197 datasheet does not specify the IF frequency input range,please kindly help to guide.
11,12 : QN,QP
26, 25 : IN,IP
The 3dB IF BW is about 650MHz. Beyond this frequency, we will see the roll-off from IF block in HMC1197. Please find the normalized baseband frequency response at Figure 15 in datasheet.