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- Title
Design of compact dual-band bandpass filter using dual-mode stepped-impedance stub resonators.
- Authors
Shuai Yang; Lei Lin; Jianzhong Chen; Kun Deng; Chang-Hong Liang
- Abstract
A dual-band bandpass filter (BPF) using a novel stepped-impedance stub resonator (SISR) is presented. The proposed SISR is found to have the advantage that the even-mode resonant frequencies can be flexibly controlled, whereas the odd-mode resonant frequencies are fixed. Based on the proposed SISR, a dual-band filter is implemented by tuning its geometric parameters. To improve the selectivity, a filter with four transmission zeros on either side of both passbands is designed by introducing a 0° feeding structure. A prototype of a dual-band BPF centred at 1.84 and 2.65 GHz has been designed and fabricated. The measured results validate the full-wave EM simulated results.
- Subjects
BANDPASS filters; ELECTRIC resonators; TRANSMISSION zeros; ELECTRIC filters; WIRELESS communications equipment
- Publication
Electronics Letters (Wiley-Blackwell), 2014, Vol 50, Issue 8, p611
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2013.4217