QUESTION

Question

Dear Support,

I'm currently designing a product that uses one of your Trogona antennas, and I'm wondering if you can provide any advice as to which L/C values I can use in the Pi matching circuit.  I'm also somewhat unclear about the preferred ground plane configuration; I already have one as the second layer from the top on a four-layer board and I'm wondering if it should have a clearance area for optimal performance, and if so, what size (the antenna would probably be mounted on the top). 

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Answer 1

Hi Jaustin,

The Pi network values for our evaluation board are, from the radio to the antenna, the first shunt component is a 1.8pF capacitor followed by a series 1.8nH inductor and no second shunt component in the Pi network. These values are only for a good starting point and will need to be refined once the antenna is installed in your device.

Best regards,

Geoff S.