| Summary: | 碩士 === 國立交通大學 === 電信研究所 === 81 === The problem of transmission of electromagnetic waves from a
rectangular waveguide into lossy half-space through an end-
wall slot is considered. The operator equation is derived and
solved via the method of moments. The aperture characteristics
are expressed in terms of two aperture admittance matrices, one
for waveguide region and one for half-space region.The solution
can be represented by two generalized n-port networks connected
in parallel with current sources.The current sources are
related to the tangential magnetic field which exists over the
aperture region when the aperture is closed by an infinite
electric conductor. By this method , we can calculate the
equivalent magnetic current on the aperture. Once the magnetic
current is found , the problem is solved and the fields and
the field- related parameters of interest in both regions can
be evaluated in a straightforward manner.
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