I have a simple question on AD8302 EVAL board. I ordered this device and tested it but it doesn't operate as I expect. I'm using it as a reflectometer as described in the datasheet. The load in my case is a resonator. I know that it resonates at certain frequency and I'm scanning the range 2-2.6GHz. Normally, the device should give constant output voltage(VMAG) except at resonance frequency.
I also connected short and open ports as a load instead of resonator. Since there will be full reflection, the output voltage should be nearly constant. However, it gives many peaks for different frequencies in the range I mentioned. How can I correct the problem?
Please correct me also if I am wrong anywhere.
Thanks a lot.