Parallel-coupled microstrip filters with over-coupled end stages for suppression of spurious responses

@article{Kuo2003ParallelcoupledMF,
  title={Parallel-coupled microstrip filters with over-coupled end stages for suppression of spurious responses},
  author={Jen-Tsai Kuo and Sin-Ping Chen and Meshon Jiang},
  journal={IEEE Microwave and Wireless Components Letters},
  year={2003},
  volume={13},
  pages={440-442}
}
  • Jen-Tsai Kuo, Sin-Ping Chen, Meshon Jiang
  • Published 2003
  • IEEE Microwave and Wireless Components Letters
  • In a parallel-coupled microstrip filter, end stages with over-coupling are designed to suppress the unwanted responses at twice the passband frequency (2f/sub 0/). The inherent transmission zero of an over-coupled input/output stage is shown tunable. It is found that increasing the image impedance of the filter sections can further enhance the suppression. The designed bandpass filters thus have a wide upper stopband and improved passband response symmetry. Measured results of fabricated… CONTINUE READING

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