Title of article :
Finite-difference frequency-domain algorithm for modeling guided-wave properties of substrate integrated waveguide
Author/Authors :
Wu، Ke-Li نويسنده , , Xu، Feng نويسنده , , Cui، Tie Jun نويسنده , , Zhang، Yulin نويسنده , , Hong، Wei نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-2220
From page :
2221
To page :
0
Abstract :
In multilayer microwave integrated circuits such as low-temperature co-fired ceramics or multilayered printed circuit boards, waveguide-like structures can be fabricated by using periodic metallic via-holes referred to as substrate integrated waveguide (SIW). Such SIW structures can largely preserve the advantages of conventional rectangular waveguides such as high-Q factor and high power capacity. However, they are subject to leakage due to periodic gaps, which potentially results in wave attenuation. Therefore, such a guided-wave modeling problem becomes a very complicated complex eigenvalue problem. Since the SIW are bilaterally unbounded, absorbing boundary conditions should be deployed in numerical algorithms. This often leads to a difficult complex root-extracting problem of a transcend equation. In this paper, we present a novel finitedifference frequency-domain algorithm with a perfectly matched layer and Floquetʹs theorem for the analysis of SIW guided-wave problems. In this scheme, the problem is converted into a generalized matrix eigenvalue problem and finally transformed to a standard matrix eigenvalue problem that can be solved with efficient subroutines available. This approach has been validated by experiment.
Keywords :
OBESITY , body composition , Foot-to-foot bioelectrical impedance analysis , dual-energy X-ray absorptiometry
Journal title :
IEEE Transactions on Microwave Theory and Techniques
Serial Year :
2003
Journal title :
IEEE Transactions on Microwave Theory and Techniques
Record number :
85787
Link To Document :
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