A NOVEL MINIATURE DUAL-BAND BANDPASS FILTER BASED ON THE FIRST AND SECOND RESONANCES FOR 2.4/5.2 GHz WLAN APPLICATION

作者：Luo Jie^*; Liao Cheng; Zhou Haijing; Xiong Xiangzheng

来源：Microwave and Optical Technology Letters, 2015, 57(5): 1143-1146.

DOI：10.1002/mop.29036

• dual-band
• bandpass filter
• U-shaped SIR
• resonances
• WLAN

In this article, a dual-band narrow bandpass filter using U-shaped stepped-impedance resonator (SIR) for 2.4/5.2 GHz wireless local area network (WLAN) application is proposed. The filter is composed of a simple U-shaped SIR and novel feedlines with two open stubs. Furthermore, this article relatively used the first and second resonances to achieve the dual-band performance. To validate the design and analysis, a prototype filter has been fabricated with two passbands are centered at 2.4 and 5.2 GHz with the fractional bandwidth of 4.9 and 3.5%, respectively. Its excellent selectivity is suitable for WLAN application. The measurement performances show good agreements with the simulated ones.

• 出版日期2015-5
• 单位西南交通大学; 北京应用物理与计算数学研究所