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Characteristics comparison of substrate-integrated rectangular waveguide (SIRW) and its equivalent rectangular waveguide

✍ Scribed by Wenquan Che; Xiaojing Ji; Ke Wu

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
137 KB
Volume
46
Category
Article
ISSN
0895-2477

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✦ Synopsis

The propagation and loss characteristics of the substrateintegrated rectangular waveguide (SIRW) at microwave and millimeterwave bands are investigated. The results further verify that the substrate-integrated rectangular waveguide has nearly the same waveguide characteristics as conventional rectangular waveguides, and it can be analyzed as a rectangular waveguide with effective width of the SIRW. The insertion loss of SIRW and its equivalent rectangular waveguide agree well with each other. However, it is observed that the derivation of the propagation characteristics of the SIRW and its equivalent rectangular waveguide indicates the frequency dependency. At the X-, K-, and Ka-bands, the effective width of the equivalent rectangular waveguide given by the empirical formula [7] should be slightly increased in order to obtain the propagation characteristic that agrees better with that of the SIRW, about 2%. In addition, at the U-band, when the effective width of the equivalent rectangular waveguide is increased 5% or so, the propagation constant of the rectangular waveguide in the whole band agrees well with that of the rectangular waveguide.

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