Wideband dual mode microstrip bandpass filters using a new perturbation with notch rectangular slots

  title={Wideband dual mode microstrip bandpass filters using a new perturbation with notch rectangular slots},
  author={Surin Ahonnom and Prayoot Akkaraekthalin},
  journal={2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology},
This paper presents wideband dual mode microstrip bandpass filters using a square ring resonator structure with a novel perturbation by notch rectangular slot. A rectangular slot shape perturbation is excited to degenerate a dual mode, which is made the two reject bands on each side of passband, resulting in high sharp cutoff frequency and low insertion loss. The proposed filters have been designed at a center frequency fo of 5 GHz. It has been found that performances of the proposed filters… CONTINUE READING


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