CHAPTER 3: ANTENNAS - MIT OpenCourseWare
expression for this coupling coefficient results if we define the useful concept of beam solid angle:A so that : oA r 4 G G d 4 S ': ³: SK (3.1.15) where this relation between G(T,I) and :A is suggested by Figure 3.1-4(a). The beam solid angle :A (steradians) usually approximates the solid angle contained within the antenna beam’s half-power ...
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