The Design of Coupled Resonator Bandpass Filter With Wide Stop-Band |
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Authors: | Yunxiu Wang Bing-Zhong Wang Jianpeng Wang |
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Affiliation: | Univ. of Electron. Sci. & Technol. of China, Chengdu; |
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Abstract: | A compact four-pole bandpass filter with multi-order spurious response suppression is proposed. The combination of dissimilar resonator structures with the same fundamental frequency but with different spurious frequencies may improve the stop-band rejection by the mutual cancellation of spurious responses. The measured results show that better than -20 dB rejection levels in the stop-band up to 4.5 f0 have been obtained. Moreover, an embedded-resonator topology is used, which makes the structure of filter to be more compact. |
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