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所属单位：电子信息工程学院
发表刊物：IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
关键字：Broad dual-band parallel-line coupler (BDPC) dual-band parallel-line coupler (DBPC) dual-band quarter-wave coupled line (DQCL) symmetric stepped-impedance coupled line (SSICL)
摘要：In this paper, a symmetric stepped-impedance coupled line (SSICL) is proposed to realize dual-band quarter-wave coupled line (DQCL), giving the same equivalent even and odd characteristic impedances at two different frequencies. The DQCL can be directly used to design dual-band parallel-line coupler (DBPC) with arbitrary coupling coefficient and large frequency ratio, resulting in even shorter total length when compared with traditional quarter-wave parallel-line coupler working at lower frequency f(1). In addition, broad DBPC (BDPC) is constructed by cascading multiple sections of SSICLs, as the SSICL is quite similar with quarter-wave coupled line in circuit. For demonstrating the design methods, in the first step, two edge-coupled 20-dB DBPCs and one broadside coupled 6-dB DBPC, working at 1/5.2, 1/7.5, and 1/5.2 GHz, respectively, are designed, fabricated and measured, exhibiting good features like large frequency ratio, high isolations, and compact dimensions. Then, for broadening bandwidths, three-section BDPC working at 1 GHz/5.2 GHz is designed and measured, resulting in working bandwidths larger than 1.2 GHz. These good features have proved the feasibility of the proposed circuits and the corresponding design methods.
ISSN号：2156-3950
是否译文：否
发表时间：2018-01-01
合写作者：Jiang, Shuai,Zhu, Shuang,Tian, Yubo,Wu, Yongle
通讯作者：刘云