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We provide in this work a clear outlook of leaky wave and
explore its radiation patterns. In chapter one, the focus is on
the leaky phnomenon of microstrip line higher modes; general
properties and physical explanations are given. Though the
subject of study is the microstrip line, relevant discussions
may well apply to other structures where leaky wave is
concerned. In chapter two, rigorous formulas for the
calculation of radiation patterns of top-covered microstrip
line are derived by the use of Green's function and accurate
current distribution. Chapter three shows the theoretical
results, which will be compared with the radiation patterns of
leaky microstrip line without top cover. Finally, we'll discuss
the general characteristics of leaky wave radiation patterns.
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