A review of Substrate Integrated Waveguide (SIW) bandpass filter based on different method and design

Substrate Integrated Waveguide (SIW) is an emerging technology of high-frequency integrated that appeared in recent years which provides an excellent platform in order to design millimeter wave circuits such as filters, resonators and antennae. It offers advantages in terms of compact size and easy to integrate with the other planar circuit. The fabrication can be done by using standard printed circuit (PCB) where the cost of the manufacturing process will be reduced compared to the conventional waveguide filter. This paper presents the review of SIW bandpass filter for X-band applications for the past few years that have operation frequency from 8.2-12.4 GHz. Most researchers focus on designing SIW bandpass filter rather than other filter because Chebychev filter response is easy to make circuit synthesis. Different types of method have been introduced in the SIW bandpass filter design and the performance of the filter design will be compared.