INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
Prev
Next
|
|
|
Switchable and tunable triple-channel bandpass filter |
Ming-En Tian(田明恩)1, Zhi-He Long(龙之河)2, Li-Jun Feng(冯丽君)1, Lei-Lei He(贺磊磊)1, and Tian-Liang Zhang(张天良)1,† |
1 School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 611731, China; 2 Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China |
|
|
Abstract A triple-channel bandpass filter with switchable and tunable functions is proposed, which is based on a triple-mode cross resonator. The varactors and switching diodes are loaded at the end of the resonator. Because of the use of switches, resonators have four working states: conventional single-mode, two dual-modes, and one triple-mode. The varactor makes the channel independently adjustable. Finally, a triple-channel bandpass filter with switchable and tunable functions is designed by using two identical triple-mode resonator coupling structures. To solve the problem of whether each channel in the multi-channel filter is independently adjustable, this paper gives a simple and rigorous judgment method, namely rank criterion, which is a necessary and sufficient condition for each channel to be independently adjustable. The method of designing an element variable coupling matrix (EVCM) is adopted, which can not only obtain the desired frequency response through adjustable elements but also help to select resonators and coupling modes in the actual circuit design. The final circuit size of the designed filter is 0.29 λg×0.26 λg. The measured results are in good agreement with the simulation results.
|
Received: 20 November 2021
Revised: 18 January 2022
Accepted manuscript online: 27 January 2022
|
PACS:
|
84.30.Vn
|
(Filters)
|
|
84.40.Dc
|
(Microwave circuits)
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61471094) and the Science and Technology Support Program of Sichuan Province, China (Grant Nos. 2019YFG0499 and 2020YFG0231). |
Corresponding Authors:
Tian-Liang Zhang
E-mail: ztl@uestc.edu.cn
|
Cite this article:
Ming-En Tian(田明恩), Zhi-He Long(龙之河), Li-Jun Feng(冯丽君), Lei-Lei He(贺磊磊), and Tian-Liang Zhang(张天良) Switchable and tunable triple-channel bandpass filter 2022 Chin. Phys. B 31 078401
|
[1] Chen L, Cheng Z X, Xu J M, Zang X F, Cai B and Zhu Y M 2014 IEEE Opt. Lett. 39 4541 [2] Chen L, Liao D G, Guo X G, Zhao J Y, Zhu Y M and Zhuang S L 2019 IEEE Frontiers of Information Technology & Electronic Engineering 20 591 [3] Zhang S X, Qiu L L and Chu Q X 2017 IEEE Microw. Wirel. Compon. Lett. 27 974 [4] Ren B P, Ma Z W, Liu H W, Guan X H, Wang X L, Wen P and Ohira M 2019 IEEE Trans. Microw. Theory Tech. 67 726 [5] Zhou L H, Ma Y L, Shi J, Chen J X and Che W C 2016 IEEE Trans. Microw. Theory Tech. 64 4183 [6] Chen J X, Du M Z, Li Y L, Yang Y J, and Shi J 2018 IEEE Transactions on Components, Packaging and Manufacturing Technology 8 113 [7] Chen Z H and Chu Q X 2016 IEEE Microw. Wirel. Compon. Lett. 26 92 [8] Fan M Y, Song K J, Yang L and Gómez-García R 2021 IEEE Trans. Microw. Theory Tech. 69 1365 [9] Chen F C, Li R S and Chen J P 2018 IEEE Access 6 46058 [10] Huang X G, Zhu L, Feng Q Y, Xiang Q Y and Jia D H 2013 IEEE Trans. Microw. Theory Tech. 61 3200 [11] Yang T and Rebeiz G M 2013 IEEE Trans. Microw. Theory Tech. 61 3613 [12] Wei F, Zhang C Y, Zeng C and Shi X W 2021 IEEE Trans. Microw. Theory Tech. 69 4029 [13] Pal B, Mandal M K and Dwari S 2019 IEEE Microw. Wirel. Compon. Lett. 29 255 [14] Chen X, Yang T and Chi P L 2021 IEEE Access 9 14216 [15] Lu D, Tang X H, Barker N S and Feng Y K 2018 IEEE Trans. Microw. Theory Tech. 66 1215 [16] Cho Y H, Park C and Yun S W 2021 IEEE Access 9 16967 [17] Xu J, Liu F and Feng Z Y 2020 IEEE Trans. Microw. Theory Tech. 68 741 |
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|