https://scholars.lib.ntu.edu.tw/entities/publication/8d84c2cf-81e2-4b9d-8fc3-b0275d901932
Dual-band laminated waveguide filter design in multilayer LTCC
dual bandwaveguide filterlaminateddesignmultilayer
https://matjournals.in/index.php/JoADD/article/view/3937
Analysis and Design of Substrate Integrated Waveguide Bandpass Filter with DGS for Ku-Band...
Analysis and Design of Substrate Integrated Waveguide Bandpass Filter with DGS for Ku-Band Applications