A tunable open ring coupling structure and its application in fully tunable bandpass filter
Published online by Cambridge University Press: 03 May 2019
Abstract
This letter presents a novel tunable coupling structure to simplify the design complexity of the miniaturized fully tunable filter by using open ring and varactors. Based on the proposed novel tunable coupling structure, a fully tunable bandpass filter is implemented with independently tunable operating frequency and bandwidth. The tunable resonator and tunable coupling structure can be easily combined to improve Out-of-band suppression performance. The design procedure of a fully tunable bandpass filter consists of five tunable cavities and tunable coupling rings is also proposed. A prototype of the proposed fully tunable filter is built to verify the design experimentally. Good agreement between simulated and measured results is obtained.
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 8 , October 2019 , pp. 782 - 786
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2019
References
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