滤波器、改善滤波器插损和回波性能的方法以及电子设备
By optimizing the filter topology, especially by limiting the resonator area and operating frequency of the parallel branches near the input and output terminals, and increasing the inductance of the grounding inductor, the shortcomings of existing filters in insertion loss and return performance are solved, and better electrical characteristics are achieved.
CN115882817BActive Publication Date: 2026-07-17ROFS MICROSYST TIANJIN CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ROFS MICROSYST TIANJIN CO LTD
- Filing Date
- 2021-09-27
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing trapezoidal filter structures have room for improvement in insertion loss and return performance, making it difficult to meet users' high-performance requirements.
Method used
By optimizing the filter's topology, especially by limiting the resonator area and operating frequency of the parallel branches near the input and output terminals to their minimum, and by increasing the inductance of the grounding inductor to offset the capacitive component of the resonator, the filter's insertion loss and return performance are optimized.
Benefits of technology
This improved the filter's insertion loss and return performance, resulting in better electrical characteristics.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115882817B_ABST
Abstract
本发明公开了一种滤波器、改善滤波器插损和回波性能的方法以及电子设备。该滤波器为梯形拓扑结构，其输入端和输出端之间包含多个串联谐振器和多个并联支路，各并联支路中包含谐振器，其中：对于多个并联支路中最靠近输入端和 / 或输出端的第一并联支路，该第一并联支路的等效谐振器面积是所有并联支路的等效谐振器面积中最小的，并且该第一并联支路中的谐振器的工作频率是所有并联支路中的谐振器的工作频率中最低的。本发明通过对滤波器拓扑结构中的特定谐振器的面积和工作频率进行限定，获得了更优的插损和回波特性，具有简单易行等优点。
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