Compact Wide Stopband Ultra Wideband Bandpass Filter Using Multilayer Liquid Crystal Polymer Technology
Compact Wide Stopband Ultra Wideband Bandpass Filter Using Multilayer Liquid Crystal Polymer Technology
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采用多层液晶聚合物技术的紧凑型宽阻带超宽带带通滤波器
DOI：
10.1109/lmwc.2009.2017592
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发表时间：
2009
影响因子：
3
通讯作者：
Zhang-Cheng Hao
中科院分区：
文献类型：
--
作者：
Zhang-Cheng Hao
提出了一种基于宽带耦合电容负载传输线谐振器(C-L TLR)的新型超宽带带通滤波器。利用C-L TLR的宽带谐波抑制特性，设计了具有宽带阻带的超宽带带通滤波器，并采用多层有机液晶聚合物(LCP)技术实现。作为演示，首先设计了一种无管五极带通滤波器，然后在输入/输出端采用并联短路微带短路，设计了一种满足FCC定义的超宽带室内掩模的紧凑型超宽带带通滤波器。提出的超宽带带通滤波器是采用多层LCP工艺制作的。装配式滤光片的模拟结果与测量结果吻合较好。测试结果表明，制作的BPF具有良好的选择性、较宽的阻带和较高的抑制电平。制作的超宽带带通滤波器的尺寸为15.15 mm×4.7 mm，约为0.55 nm×0.17 nm，9.6 mm×9.2 mm，约为0.35 nm×0.33 lambdag0，其中lambdag0是6.85 GHz下50欧米茄微带线的导波波长。它们对超宽带通信和雷达系统很有吸引力。
Novel ultra-wideband (UWB) bandpass filters (BPFs) are proposed based on broadside coupled capacitive-loaded transmission line resonators (C-L TLR) in this letter. By utilizing the wideband harmonic suppression behavior of C-L TLR, the proposed UWB BPFs were designed with wide stopband and implemented using multilayer organic liquid crystal polymer (LCP) technology. As demonstrations, a vialess five-pole BPF was designed first, and then by adopting shunt short-circuited microstrip stubs at input/output ports, a compact UWB BPF was designed to meet FCC-defined UWB indoor mask. The proposed UWB BPFs were fabricated using multilayer LCP technology. Good agreements between simulated and measured results of fabricated filters were observed. The measured results show that the fabricated BPFs have good selectivity, wide stopband and high rejection level. The fabricated UWB BPFs have compact sizes of 15.15 mm by 4.7 mm about 0.55 lambdag0by 0.17 lambdag0and 9.6 mm by 9.2 mm about 0.35 lambdag0by 0.33 lambdag0respectively, where lambdag0is the guided wavelength of 50 Omega microstrip line at 6.85 GHz. They are attractive for UWB communications and radar systems.
DOI：
10.1109/tmtt.2008.2002228
发表时间：
2008-08
影响因子：
4.3
作者：
Z. Hao;Jiasheng Hong
通讯作者：
Z. Hao;Jiasheng Hong