New Compact Dual Bandpass Filter Using Coupled Double-Ring Resonators and DGS-Technique
Keywords:
Coupled resonators, defected ground structure (DGS), double-ring resonators, dual-band bandpass filterAbstract
This paper presents a design of dual-band bandpass filter using novel ring resonator and H-defected ground. The bandpass filter is designed optimized and realized using mixed coupled microstrip double ring resonators and two electrically coupled H-cells DGS resonators, which are etched in background of the structure. Using this new ring structure leads to generate a selective bandpass filter with two isolated passbands. The measurement results show that the optimized filter has two passbands, the first band from 1.6 GHz to 2 GHz and the other from 3.6 GHz to 5.5 GHz. The proposed structure occupies an area of (0.45?g × 0.35?g) with ?g = 0.044 m. The simulated and experimented results show good agreement and validate the proposed approach
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References
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