Compact dual-band bandpass filter using open loop resonator loaded by in-line beeline for wideband applications

IEICE Electronics Express

Mohsen Hayati¹  Leila Noori¹ 

[1] Electrical Engineering Department, Faculty of Engineering, Razi University

关键词: dual-band filter;    stepped impedance;    stub;    ultra wideband;   

DOI  :  10.1587/elex.8.1789

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)In this paper, a dual-band bandpass filter with low insertion loss in the pass bands and compact size is designed using only two open-loop microstrip resonators loaded by in-line beelines. The in-line beelines, are loaded to achieve two passbands with high performance. By adjusting the stub lengths and widths and also the tap line position, the harmonics above the second band are supperssed. The minimum insertion loss is 0.9 and 0.2dB at the first and second passbands respectively. The minimum attenuation above the second passband is -19.5dB from 5.4 up to more than 20GHz, so it can be used for wideband applications. This filter is then fabricated and measured. The measured and simulated results are in good agreement.

【 授权许可】

Unknown