An intelligent filter with adjustable bandwidth

Chang Zhou; Xiude Tu; Zhongwei Wang; Nan Wang

doi:10.1117/12.3025509

28 February 2024 An intelligent filter with adjustable bandwidth

Chang Zhou, Xiude Tu, Zhongwei Wang, Nan Wang

Proceedings Volume 13071, International Conference on Mechatronic Engineering and Artificial Intelligence (MEAI 2023); 130711K (2024) https://doi.org/10.1117/12.3025509
Event: International Conference on Mechatronic Engineering and Artificial Intelligence (MEAI 2023), 2023, Shenyang, China

Abstract

A bandwidth intelligent tunable filter based on filter theory is designed in this article. By selecting a special interstage coupling structure and using a varactor circuit, dual frequency band tunable transmission could be achieved within the broadband range. The final design results show that the insertion loss of the filter is reduced to below 1.65dB and the return loss is greater than -15dB. In addition, the fixed frequency of the filter is 290MHz and the bandwidth is greater than 5MHz. The adjustable operating frequency ranges from 228-275.7MHz, the bandwidth is greater than 4.5MHz and the insertion loss is not greater than 1.2dB. The above parameters meet the filter requirements. This filter could achieve effective signal filtering in communication systems, which could ensuring system electromagnetic compatibility.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chang Zhou, Xiude Tu, Zhongwei Wang, and Nan Wang "An intelligent filter with adjustable bandwidth", Proc. SPIE 13071, International Conference on Mechatronic Engineering and Artificial Intelligence (MEAI 2023), 130711K (28 February 2024); https://doi.org/10.1117/12.3025509

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