Substrate Integrated Waveguide miniaturization using Slow Wave and Half Mode techniques

Here in this paper we present a new miniaturized SIW using two techniques together, the first is the Slow-Wave SIW and the second is the Half-Mode SIW. Combining these two techniques shows that we can miniaturize our SIW with a factor of 70%. Comparing to other published papers we have miniaturized the usual SW-SIW without decreasing the quality factor or increasing losses. Also a model for calculating the effective permittivity of these type of transmission line is proposed.