Analysis Of SIW filter with less Dielectric Substrate

The presence of dielectric limits the performance in the designing of devices like a filter, especially at high frequencies. With the aim of solving this problem, a new designing technique has been adopted in substrate integrated waveguide structures wherein the dielectric is detached, whereas the advantages like low cost, simple and easy manufacturing, low profile, and PCB integration are maintained as before. This paper consists of two structures in which analysis of SIW filter design with the less dielectric substrate is put up and compared. The obtained insertion loss is less than 1.07 dB at a cut-off frequency of about 9.07 GHz