Microstrip Dual-narrowband Bandpass Filter with Independent Passbands
In this article, a novel compact microstrip dual-narrowband bandpass filter (DNBPF) is presented with wide and high rejection levels in the stopbands. The location of each passband is independently controllable/tunable/selectable. The filter structure is made up of three-coupled-asymmetrical transmi...
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| Veröffentlicht in: | Wireless personal communications 2021, Vol.119 (4), p.3503-3516 |
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| creator | Najafi, Masoud Hazeri, Ali Reza |
| description | In this article, a novel compact microstrip dual-narrowband bandpass filter (DNBPF) is presented with wide and high rejection levels in the stopbands. The location of each passband is independently controllable/tunable/selectable. The filter structure is made up of three-coupled-asymmetrical transmission lines, open-ended stubs and direct-transmission lines. Employing these lines can generate two narrowband passband filters. By combining these passband filters, the proposed DNBPF is configured. The proposed DNBPF is investigated. The center frequency of the first and second passband are 5.745 and 6.489 GHz, respectively. Also, the proposed DNBPF presents the fractional 3-dB bandwidth of the first and second passband 3.66 and 2.33%, respectively. It has the flattest group delay variations in comparison with previously published papers due to the design freedom. |S12| |
| doi_str_mv | 10.1007/s11277-021-08417-z |
| format | Article |
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| subjects | Bandpass filters Communications Engineering Computer Communication Networks Engineering Group delay Narrowband Networks Signal,Image and Speech Processing Transmission lines |
| title | Microstrip Dual-narrowband Bandpass Filter with Independent Passbands |
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