Hi, I am trying to make a simplified reflectometer measuring S11 parameters. I am going to use ADF4351 as the signal source. And a bi-directional coupler will be used to separate the forward and reverse signals. The 2 streams of signals will be detected by AD8302 and transferred to DC signals that can be processed by microcontrollers. However, the frequency range of AD8302 is too narrow for my project. The upper limit is 2.7GHz which can not meet my requirement. Is there any similar chip that has the same functions but working at higher frequencies up to 4GHz?