Compact bandpass filter with quasi-elliptic response using stub loaded resonator

详细信息    查看全文

• 作者：Vivek Singh ; ^{biswajeet.26@gmail.com} ; Vinay Kumar Killamsetty ; Biswajeet Mukherjee
• 关键词：Mixed coupling ; Quasi-elliptic bandpass filter ; Roll-off rate ; Short-circuited stub loaded stepped impedance resonator (SCSL-SIR) ; Transmission zero (TZ)
• 刊名：AEU - International Journal of Electronics and Communications
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：72
• 期：Complete
• 页码：174-177
• 全文大小：1191 K
• 卷排序：72

文摘

In this letter, a compact bandpass filter having quasi-elliptic response is proposed using short-circuited stub loaded λ/2 stepped impedance resonator (SCSL-SIR). Five transmission zeros generated helps in achieving high selectivity and improve out-of-band rejection characteristics of BPF. A compact bandpass filter having a size of 0.109λg × 0.104λg, with a 3 dB fractional bandwidth of 14% and having lower/upper stopband roll-off rates of 1.91 dB/MHz/1.44 dB/MHz is designed at 0.350 GHz for Terrestrial Trunked Radio (TETRA) band applications.