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A dual‐mode waveguide filter based on stereometamaterial CSRR resonator
Author(s) -
Bod Mohammad,
Hatefi Ardakani Hossein
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31409
Subject(s) - resonator , helical resonator , filter (signal processing) , waveguide filter , split ring resonator , transmission (telecommunications) , waveguide , physics , dielectric resonator antenna , electronic engineering , topology (electrical circuits) , optics , filter design , acoustics , materials science , computer science , prototype filter , engineering , telecommunications , electrical engineering
This paper represents a new dual‐mode waveguide filter based on a stereometamaterial resonator. A novel resonator is proposed in the paper consisting of two stacked complementary split ring resonators (CSRR) where one of them is twisted in its plane. This resonator provides a transmission zero, which can be easily adjusted in both of the upper and lower stopbands of the filter. By cascading the four of the proposed resonator, an eight order symmetric filter with four transmission zeros are designed. The filter parameters are optimized using the genetic algorithm (GA). This filter is fabricated and the experimental results are in a good agreement with the simulation data. Besides the flexibility in the design, the most important characteristic of the proposed structure is its compactness compared to similar structures.