Dual-/tri-band bandpass filters with fully independent and controllable passband based on multipath-embedded resonators
| Autor: | Li-Tian Wang, Yue-Peng Zhong, Wei Zhang, Yang Xiong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Plane (geometry) business.industry 020208 electrical & electronic engineering Bandwidth (signal processing) High selectivity 020206 networking & telecommunications 02 engineering and technology Filter (signal processing) Resonator Optics Band-pass filter 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Passband Multipath propagation |
| Zdroj: | International Journal of Microwave and Wireless Technologies. 12:1012-1019 |
| ISSN: | 1759-0795 1759-0787 |
| Popis: | In this paper, dual-band and tri-band bandpass filters (BPFs) with fully independent and controllable passbands based on multipath-embedded resonators are presented. The dual-band BPF consists of two double open-ended stub-loaded terminal-shorted resonators (DOESL-TSRs) with a common via-hole connected along the symmetric plane of the filter. Based on DOESL-TSRs, a triple open-ended stub-loaded terminal-shorted resonator (TOESL-TSR) is proposed in the design of tri-band BPFs. The resonant characteristics of DOESL-TSR/TOESL-TSR are analyzed by the numerical calculation method. The measured results of the dual-band BPF show that the center frequencies (CFs) are located at 2.595 and 5.75 GHz, respectively, with 3 dB fraction bandwidth (FBWs) of 15 and 12.8%. The measured CFs of the tri-band BPF are located at 2.545, 3.775, and 5.95 GHz, respectively, with 3 dB FBWs of 9.8, 9.3, and 5.5%. Both of the filters exhibit the merits of fully independent and controllable passbands, high selectivity, and compact size. |
| Databáze: | OpenAIRE |
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