ARLINGTON, Va. – U.S. military researchers are asking industry to develop new ways to model the ionosphere in real time to help predict the propagation of high-frequency (HF) radio waves for improved ...
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 ...
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