What is SIW | What is Substrate Integrated Waveguide,benefits
This page describes basics of SIW i.e. Substrate Integrated Waveguide. SIW is modification of dielectric filled waveguide. Substrate Integrated Waveguide is used in RF domain due to many of its benefits.
As shown in the figure-1 below, SIW consists of two metal ground planes on top and bottom of the structure with dielectric substrate in between the planes. Metallic via array is placed between these two planes.
Due to its several benefits as outlined below, it is widely used in 5G technology related devices.
Due to via holes at sidewalls, TM mode does not exist. Hence TE10 mode is used in SIW (Substrate Integrated Waveguide) as dominant mode.
The SIW is derived from dielectric filled waveguide (DFW), where in via holes do not exist.
Benefits of SIW
Following are the benefits of SIW (Substrate Integrated Waveguide).
• high power capability
• low radiation losses
• high-density integration
• low cost of fabrication
SIW | Substrate Integrated Waveguide Related
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