A Compact Bandpass Filter Based on Right- and Left-Handed Transmission Line Sections

作者：Ni Jia^*; Vendik Irina; Kholodnyak Dmitry; Hong Jiasheng

来源：IEEE Microwave and Wireless Components Letters, 2013, 23(6): 279-281.

DOI：10.1109/LMWC.2013.2257997

• Bandpass filter (BPF)
• liquid crystal polymer (LCP)
• right/left-handed (RH/LH) transmission lines (TLs)
• signal-interference technique
• transversal filter

A new type of a compact second-order bandpass filter (BPF) with two transmission zeros based on transversal signal-interference technique is proposed in this letter. Unlike other transversal filters published, the proposed structure is composed of artificial right-and left-handed transmission lines, instead of traditional distributed transmission line sections. Such an approach is not only helpful in size reduction, but also promising for frequency-asymmetrical stopband performance achievement. Design equations and guidelines to adjust filter performance are provided in the letter. To validate the proposed design approach, a two-pole BPF was designed, fabricated using multilayer liquid crystal polymer (LCP) technology and measured.

• 出版日期2013-6