ABSTRACT A novel high-selectivity filtering power divider is presented in this paper. The proposed circuit utilizes two fourth-order filters with a surface mount resistor. The fourth-order filter is realized by quarter-wavelength and half-wavelength resonators. And by controlling the electric and magnetic coupling, two transmission zeros can be realized at the two sides and the passband. Furthermore, the source-load coupling is also adopted. Thus, four transmission zeros are realized, which ensure high selectivity and suppression level for the filtering power divider. To verify the proposed idea, a filtering power divider with operating frequencies of 2.45 GHz is implemented. The design procedures are discussed in detail, and the simulated and measured results are presented.

中文翻译：

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高带外抑制高选择性滤波功分器设计

摘要 本文提出了一种新型的高选择性滤波功率分配器。建议的电路使用两个带有表面贴装电阻器的四阶滤波器。四阶滤波器由四分之一波长和半波长谐振器实现。并且通过控制电、磁耦合，可以在两侧和通带实现两个传输零点。此外，还采用了源-负载耦合。这样就实现了四个传输零点，保证了滤波功分器的高选择性和抑制水平。为了验证所提出的想法，实现了工作频率为 2.45 GHz 的滤波功率分配器。详细讨论了设计程序，并给出了模拟和测量结果。