Design of Very Compact Bandpass Filters Based on Differential Transformers
Design of Very Compact Bandpass Filters Based on Differential Transformers
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DOI：
10.1109/lmwc.2015.2427660
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发表时间：
2015-07-01
影响因子：
3
通讯作者：
Kim, Nam-Young
中科院分区：
文献类型：
--
作者：
Li, Yang;Wang, Cong;Kim, Nam-Young
本文提出了两种采用集成无源器件技术的紧凑型差动变压器带通滤波器(BPF)。这两种设计都位于900-MHz的中心频率，具有14%的3分贝分数带宽。这两种设计都实现了良好的射频性能和小型化。测试结果表明，A类和B类滤波器的插入损耗分别小于1.25和0.8分贝。与其他工程相比，这两个BPF的整体尺寸都特别小，只有7.8×10(-3)波长(0)×7.8×10(-3)波长(0)和9.0×10(-3)波长(0)×7.8×10(-3)波长(0)。和。第二种设计为第一种设计的局限性和问题提供了一个很好的解决方案。为了验证所提出的设计，实现了两个样机，测量结果验证了所提出的设计方法的正确性。
This letter presents two compact differential transformer-based bandpass filters (BPFs) using the integrated passive device technology based on a GaAs substrate. The two designs are located at the 900-MHz center frequency and have a 3 dB fractional bandwidth of 14%. Good RF performances and miniaturizations are achieved in these two designs. The measured insertion losses of the type-A and type-B filters are less than 1.25 dB and 0.8 dB, respectively. The overall size of both BPFs are especially small compared to other works, which are only 7.8 x 10(-3)lambda(0) x 7.8 x 10(-3)lambda(0) and 9.0 x 10(-3)lambda(0) x 7.8 x 10(-3)lambda(0). and. The second design provides a good solution for the limitations and issues of the first proposed design. To verify the proposed design, two prototypes are implemented, and the measured results validate the correctness of the presented design approach.