期刊
IEEE ANTENNAS AND PROPAGATION MAGAZINE
卷 54, 期 4, 页码 238-243出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MAP.2012.6354263
关键词
Directivity; HPBW (half-power beamwidth); aperture theory; antennas; antenna radiation patterns
In antenna theory, the formulae relating the directivity and the half-power beamwidth are reexamined in the case of pencil-beam radiation patterns from large grounded apertures, both square and circular. It is shown that the differences among them can be reconciled by taking into account, for example, effects due to sidelobes. Effects due to an aperture-edge taper are also addressed.
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