Compact and Wide-Stopband Bandpass Filter Using Hybrid Shielded EMCSIW and CSRR Resonators
Author Information
Author(s): Miao Zhuo-Wei
Primary Institution: State Key Laboratory of Millimeter-Waves, School of Information Science and Engineering, Southeast University, Nanjing, China
Hypothesis
Can a hybrid bandpass filter design improve performance metrics such as size and stopband rejection?
Conclusion
The proposed hybrid bandpass filter demonstrates low insertion loss, compact size, and excellent upper-stopband rejection.
Supporting Evidence
- The filter operates at a center frequency of 8.3 GHz with a 3 dB fractional bandwidth of 8.1%.
- The upper-stopband rejection reaches up to 15 dB at 2.85 times the center frequency.
- The overall size of the proposed filter is 13.5 mm × 13.0 mm.
Takeaway
This study created a small and efficient filter that helps improve wireless communication by reducing unwanted signals.
Methodology
The filter was designed, simulated, fabricated, and measured using a single-layer printed circuit board process.
Limitations
The study does not address potential long-term stability or environmental effects on filter performance.
Digital Object Identifier (DOI)
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