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1887

access icon free High-selective triple-mode bandpass filter using a new capacitive-loaded patch resonator

This Letter proposes a novel high-selective triple-mode bandpass filter based on a patch resonator. The new triple-mode patch resonator is realised by the traditional dual-mode square patch with a floating capacitive-loaded metal patch. The resonance of one higher-order mode can be independently shifted to that of two fundamental modes to form a passband. Based on the proposed filter, three finite-transmission zeros can be produced, and two of them can be controlled well. For the demonstration, a triple-mode patch filter with the centre frequency of 3.5 GHz was designed, fabricated and measured.

References

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      • 8. Zhang, R., Zhu, L.: ‘A new triple-mode microstrip bandpass filter using a patch-loaded cross resonator’. 2012 IEEE/MTT-S Int. Microwave Symp. Digest, Montreal, QC, 2012.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2019.2653
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content/journals/10.1049/el.2019.2653
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