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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