Specifications

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difference between the different capacitors is obvious at low frequencies where the impedance of the
capacitor is dominant.
Figure 27: Modulation distortion with different type of capacitors
10.2 RF Layout Guide
The chip antenna of WT32i requires only a small metal clearance area directly under the antenna. The
antenna operation is dependent on the GND planes on both sides of the antenna. Minimum 15mm of GND
plane must be placed on both sides of the module and the GND plane of the motherboard must reach under
the edges of the module as shown in the Figure 28.