What distance are you trying to get? Also you may need to make the board and see how it works. You will need to tune the board to maximize the circuit.
Hi, around 20cm/8inch would be good, 25cm/10" would be perfect :) I will send a new board to fabrication tomorrow, with the previous one i could get 10-15cm/4-6". Should there be a difference if i leave the circular proximity antenna open on one place compared to having a complete circle? Thanks a lot! Josef
Could you please create the tech support case in cypress.com website and share the layout and schematic file, and project so it will help us to analyze the schematic and layout completely. To create tech support case, please go to cypress.com-> Design support-> create a support case.