Mutual Coupling Between Antennas on Complex Strucures and Aircraft
碩士 === 元智工學院 === 電機與資訊工程研究所 === 84 === Study of coupling effects due to antennas mounted on complex structures and aircraft is very important in the fields of electromagnetic compatibility and interference (EMC/EMI). In this thesis, the ge...
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| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/10883036382275310994 |
| Summary: | 碩士 === 元智工學院 === 電機與資訊工程研究所 === 84 === Study of coupling effects due to antennas mounted on complex
structures and aircraft is very important in the fields of
electromagnetic compatibility and interference (EMC/EMI). In
this thesis, the geometrical theory of diffraction(GTD) is used
for the sudies of coupling effects between antennas mounted on
complex structures and aircraft such as ships, missiles, and
airplanes. First the validity and accuracy of the GTD method
are checked by comparing the electric field distributions
between dipole antennas and a metallic plate with those obtained
from the finite-difference time-domain (FDTD) method. The
comparison between results obtained from GTD and FDTD methods
shows excellent agreement. The GTD method is then used to
predict the radiation patterns for a antenna mounted on a
complex structure and to calculate the coupling effects for
antennasmounted on missiles and airplanes. All the results in
this thesis are directlyobtained from the numerical calculations
without using the experimental measurements. The GTD method is
very useful in the design and study of EMC/EMI problems without
thorough measurements. It is extremely cost-effective and time-
efficient.
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