Experimental technologies offer elegant, inexpensive solutions. Researchers are studying applications and materials for creating radio antennas that are sprayed onto a surface. Made from commercially ...

The purpose of this article is to explain, in detail, the process involved in building and tuning a high-frequency (HF) RFID antenna, which would operate at 13.56 MHz. Some concepts will be explained ...

[My Ham Radio Journey] wanted to see if a “common person” (in his words) could build an effective vertical ham radio antenna. If you look at the video below, the answer is apparently yes. He started ...

Finnish packaging goods firm Walki (pronounced val-i-kee) has commercially released a service that manufactures passive ultrahigh-frequency (UHF) RFID tag antennas, by means of its patented Walki-4E ...