I am using the SM 130 RFID reader. I am attempting to build my own antenna but have thus far been unsuccessful. I have gotten the reader to work with the EVAL board so I know that the reader works. The antenna that I am trying to build is a simple loop antenna. I have run the antenna through capacitors like in the schematic for the EVAL board. I have also tried grounding the loop in the middle like I have seen others due online. None of this has worked any help would be appreciated.