Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6879348 | AEU - International Journal of Electronics and Communications | 2018 | 8 Pages |
Abstract
This article proposes a new dual-band tunable bandstop filter. This tunable filter is composed of two separate parts, the transmission line, and coupled stubs that each connect to three varactors. The center frequency and bandwidth in each band can be controlled individually. Moreover, the LC equivalent circuit of the proposed filter is calculated, and the results are simulated. In the proposed filter, the simulations show that the first stopband can be tuned in a frequency range from 1.2 to 1.9â¯GHz with 10-dB absolute bandwidth 310â¯Â±â¯30â¯MHz, whereas the second stopband varies from 2.5 to 3.3â¯GHz with the 10-dB absolute bandwidth 720â¯Â±â¯20â¯MHz. These two stopbands can also be tuned independently. Furthermore, the bandwidth of each fixed center frequency can be changed easily. The fabricated proposed filter validates the simulation results. The compact filter has an effective size of 9â¯Ãâ¯27.5â¯mm2.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Samaneh Sedighi Maragheh, Massoud Dousti, Mehdi Dolatshahi, Behbod Ghalamkari,