Very Wideband, Compact Microstrip Bandstop Filter Covering S-Band to Ku-Band

Kamaljeet Singh, K. Nagachenchaiah
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引用次数: 7

Abstract

This paper reports a wide bandwidth planar bandstop filter with improved RF characteristics. The proposed filter on alumina is realized incorporating tapped open stub along with spurline topology. Further, stepped impedance resonator (SIR) approach has been introduced in the tapped stubs to achieve wider band performance with improved selectivity. The proposed topology effectively controls the transmission poles. Fabrication of this BSF has been carried out on glass substrate showing minimal effect of permittivity variation on bandwidth performance. This validates the applied approach with achievable bandwidth of more than 100% ranging from S- to Ku-band. Close agreement with simulation and practical results have been demonstrated with measured insertion loss of less than 1 dB and attenuation loss better than 30 dB at C-band.
非常宽带,紧凑的微带带阻滤波器覆盖s波段到ku波段
本文报道了一种改进射频特性的宽带平面带阻滤波器。所提出的氧化铝滤波器采用带抽头的开路短段和杂散线拓扑结构来实现。此外,在抽头存根中引入了阶跃阻抗谐振器(SIR)方法,以提高选择性,实现更宽的频带性能。所提出的拓扑结构有效地控制了输电电线杆。在玻璃基板上进行了这种BSF的制备,显示介电常数变化对带宽性能的影响最小。这验证了应用的方法在S-到ku波段的可实现带宽超过100%。在c波段测量到的插入损耗小于1 dB,衰减损耗大于30 dB,与仿真和实际结果非常吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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