Aperture Antennas and Diffraction Theory
The Institution of Engineering and Technology, 1981
eISBN: 978-1-84919-373-3 | Cloth: 978-0-906048-52-8
Library of Congress Classification TK7871.6.J85 1981
Dewey Decimal Classification 621.380283
eISBN: 978-1-84919-373-3 | Cloth: 978-0-906048-52-8
Library of Congress Classification TK7871.6.J85 1981
Dewey Decimal Classification 621.380283
ABOUT THIS BOOK | TOC
ABOUT THIS BOOK
Two powerful techniques for the analysis of aperture antennas are now used. One is based on the convenient Fourier transform relationship between aperture field and far-field radiation pattern. Here this relationship is derived from the plane wave spectrum representation of the aperture fields. In the near field of the aperture, Fourier transforms become Fresnel transforms. Far-field patterns may be predicted from near-field measurements by treating the near field as the aperture plane. In its application this method is basically the Kirchhoff approximation of diffraction theory. It is accurate for the forward fields of large antennas but cannot provide the lateral and back radiation.
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