Dear Sir or Madam,
Currently we develop a first prototype of a new Bluetooth device. Therefore we used the example ZOR Antenna (document AN-B-027 Z, 5.4 ZOR Antenna, 1.6 mm Substrate). Attached you can see the Layerstack of our circuit board.
Unfortunately the resonance frequency of our antenna is around 2,8Ghz.
Could you please explain me how to shift the resonance frequency to 2.4Ghz (like in figure 20 in AN-B-027).
I am looking forward to your answer! Many thanks in advance.