Magnetic loop antennas are great if you are limited on space since they are just a potentially small loop of wire. The problem is, they are sharply tuned. You normally have an adjustment capacitor to ...

Ken Beckwith is a field engineer with EMF based in Nebraska. Being a hands-on engineer, Ken has done his share of construction over the years. One of his projects was the construction of an ...

UK company Sarantel has developed a twisted loop antenna with a near field of less than 1mm The closeness of the near field makes it possible to place more than one antenna within a single device.

Made from a special flexible polymer material and specifically designed for medical monitoring devices, the FLA.01 circuit loop antenna is said to be the first flexible circuit loop antenna able to ...

In our previous column we discussed Ron Schacht’s inexpensive EAS receiver idea. Now I hear from Ken Beckwith that he is building and selling antennas to feed your EAS receiver. We shared a ...

We’re sure all radio amateurs must have encountered the problem faced by [Alexandre Grimberg PY1AHD] frequently enough that they nod their heads sagely. There you are, relaxing in the sun on the ...

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THE ANTENNA. This crucial component of any radio transmitting or receiving system has a history that actually predates the invention of radio itself. The first antennas were used by Princeton ...