019 Inverted-F PCB Antenna: How to tune PCB circuits using a NanoVNA

PCB antennas are pretty common because they are small and cheap. Can we use them for our projects? How do they work? And: How can we test and tune them? Let’s look at an antenna for the 868-915MHz ISM bands. As a side-effect, you will learn how to measure impedances directly on a PCB.
Links:
LiteVNA (Currently best "NanoVNA"): s.click.aliexp... or amzn.to/3IE8cza
IFA explanation video: • Antenna-Theory.com Pre...
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