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Design of a filtering power divider with high selectivity based on coupled lines
Microwave and Optical Technology Letters ( IF 1.5 ) Pub Date : 2021-11-15 , DOI: 10.1002/mop.33090
Akram Sheikhi 1 , Parastoo Rostami 1
Affiliation  

In this paper, a microstrip high selectivity filtering power divider with coupling from source/load to the resonator is designed. By employing pairs of parallel-coupled lines and asymmetrical T-shaped resonators to construct the filtering power dividers (PD), high selectivity, and good return loss can be achieved with two transmission poles and two transmission zeros. The design procedure and analytical equations are obtained by using the even/odd-mode analysis. The power divider operating at the central frequency of 2.1 GHz with a 3-dB fractional bandwidth of 19% (1.9–2.4 GHz) is simulated and implemented. Good agreement between measurement and simulated results is obtained. By introducing a resistor between output ports, the isolation is better than 18.4 dB at the passband frequency, respectively. Also, the second harmonic rejection and insertion loss lower than 0.38 dB has been obtained.

中文翻译:

基于耦合线的高选择性滤波功分器设计

在本文中,设计了一种从源/负载耦合到谐振器的微带高选择性滤波功率分配器。通过采用成对的平行耦合线和不对称的 T 形谐振器来构建滤波功率分配器 (PD),可以在两个传输极点和两个传输零点的情况下实现高选择性和良好的回波损耗。设计程序和解析方程是通过使用偶/奇模分析获得的。功率分配器在 2.1 GHz 的中心频率下运行,具有 19% (1.9–2.4 GHz) 的 3-dB 分数带宽被模拟和实现。在测量和模拟结果之间获得了良好的一致性。通过在输出端口之间引入一个电阻,在通带频率下的隔离度分别优于 18.4 dB。还,
更新日期:2021-12-20
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