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Post-wall waveguide
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Post-wall waveguide : ウィキペディア英語版
Post-wall waveguide
A post-wall waveguide (also known as substrate integrated waveguide (SIW) or a laminated waveguide) is a synthetic rectangular electromagnetic waveguide formed in a dielectric substrate by densely arraying metallized posts or via-holes which connect the upper and lower metal plates of the substrate. The waveguide can be easily fabricated with low-cost and mass-production using through-hole techniques where the post walls consists of via fences. The post-wall waveguide is known to have similar guided wave and mode characteristics to the conventional rectangular waveguide with equivalent guided wavelength.
For instance, the equivalent width of a rectangular waveguide compared to a SIW is described in the approximation:

a_=a_-1.08(2r)^2/p + 0.1 (2r)^2/a_

where p is the distance between the posts in the post wall, r describes the radius, and a_ as well as a_ are the widths of the rectangular waveguide, resp. SIW.
==External links==

*(siwspace.com ) – A web on Substrate integrated waveguide


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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