What is the Near Field?


Smith Chart of the near-field impedance for a magnetic dipole (top) and electric dipole (bottom).

Smith Chart of the near-field impedance for a magnetic dipole (top) and electric dipole (bottom).

This morning at 11:00 am, I will present a forum in the Embassy Suites Redstone Room at the 2016 Huntsville Hamfest. I will offer some answers to the question, “What is the Near Field?”

This talk explains the near field, taking waves propagating along transmission lines as a starting point. Understanding a few basic concepts like field impedance and energy velocity makes the mysteries of antenna behavior more comprehensible. Following are my slides.

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