# Correct chip antenna performance flaw ## Problem environment The onboard chip antenna pads and traces dialectrically produce a resonance. ## Steps to reproduce 1. Populate the chip antenna AE5 1. Attach a vector network analyser 1. Measure the resonance frequency ## Expected result The chip antenna resonance frequency is 868 MHz. ## Actual result The chip antenna resonance frequency is off by a lot. ## Workaround Once the actual resonance frequency is determined, cut from the trace tail to adjust (increasing the frequency) towards the target frequency. ## Alternative Consider replacing the Johanson 0868AT43A0020E with a more expensive (dual band) Pulse Larsen W3320. ## Severity level This is **low priority** because project requirements do not mandate antenna calibration.