Introduction
1.1 What Is Small?
“Small” is obviously a comparative term, and so one must ask what is the reference standard. For ordinary usage, we may use as reference the middle of the size range of objects in the class being discussed. For example, among dogs a dachshund is small and a St. Bernard is large. But the medium dog is small compared to the medium human, whether we’re talking about height or weight. For antennas, it’s hard to say what the middle size is, so people talk ordinarily in reference to the human scale. I call this physical size. That is, an antenna that fits in your hand is physically small, while one that is 20 m tall is physically large. Physical size, along with the environment in which the antenna will be ...
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