SIW AND ADM BANDPASS FILTER USING 3D PRINTING TECHNIQUE AND ITS EQUIVALENT CIRCUITS

• Main Author: Farhan Maulana, Muhammad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/76203
• Institution: Institut Teknologi Bandung

Filters are a very important component in wireless communication systems. The development of wireless communication systems currently requires a small and lightweight filter. To overcome this, a certain structure is needed that can engineer the characteristics of the material. Therefore, substrate integrated waveguide (SIW) and artificial dielectric material (ADM) structures were developed. The use of SIW structures can minimize losses at high frequencies while reducing the size. In addition, ADM structures can reduce the size of RF circuits without reducing their performasince. It is also possible to implement ADM structures in conjunction with the SIW technique, but the use of both structures can increase the complexity of the realization process and significantly increase the weight of the bandpass filter. Therefore, the use of 3D printing techniques can be considered in the realization process of SIW and ADM-based bandpass filters. The use of 3D printing techniques can reduce the weight of the bandpass filter and can also reduce the complexity of the realization process. Therefore, the use of 3D printing techniques can increase the accuracy in the realization process of SIW and ADM-based bandpass filters. The conventional SIW bandpass filter realization has center frequencies of 3.700 GHz and 6.400 GHz, with bandwidth responses of 1.630 GHz and 3.470 GHz, respectively. The SIW and ADM bandpass filter realizations operate in several frequency bands, namely at center frequencies of 2.710 GHz, 3.835 GHz, 5.140 GHz, and 7.615 GHz, and bandwidth responses of 0.270 GHz, 0.675 GHz, 1.250 GHz, and 0.630 GHz, respectively. The reduced SIW and ADM bandpass filter realizations operate in several frequency bands at center frequencies of 2.845 GHz, 3.745 GHz, and 6.040 GHz, and bandwidth responses of 0.450 GHz, 0.945 GHz, and 1.575 GHz, respectively.