Mittal G, Pathak NP. Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons based Wideband Bandpass Filter at Microwave Frequency. Def. Sc. J. [Internet]. 2018 Apr. 16 [cited 2025 Jun. 15];68(3):300-6. Available from: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/11981