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This paper deals with a 3 dB Ku-band coupler designed in substrate integrated waveguide (SIW) technology. A microstrip-SIW-transition is designed with a return loss (RL) greater than 20 dB. Rogers 4003 substrate is used for the SIW with a gold plated copper metallisation. The coupler achieves a relative bandwidth of 26.1% with an insertion loss (IL) lower than 2 dB, coupling balance smaller than 0...
This paper deals with the design and comparison between 5th order waveguide (WG) and substrate integrated waveguide (SIW) filters for satcom applications, e.g. very small aperture terminals (VSAT). The filters are designed for the passband from 13.75 GHz to 14.5 GHz and realized using non-symmetrical inductive irises. Rogers RO4003c substrate was used for the SIW structure. An insertion loss (IL)...
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