3) Effect of GND size on gain

We measured 15 different board dimensions to show the effect of GND size on antenna gain.

・ Bandwidth and antenna gain dramatically improve by lengthening the board (Fig. 3-2 and Fig. 3-3). Bandwidth increased from 9 to 17MHz and gain improved by 6dB.
・ Decreasing width (W) and increasing length (L) of the GND improved bandwidth and average gain. This suggests that long and narrow PCBs are best for antenna performance.





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