基于滤波选频组件在现代通信系统的大规模使用，本文介绍了一款基于介质滤波器的开关滤波器组件。通过优化布局消除介质滤波器附近金属屏蔽物对其性能的干扰，并针对射频电路的串扰影响进行电磁分析。 经实测，滤波组件的损耗＜4. 1 dB，-1. 8 dB 带宽＞35 MHz，驻波比＜1. 8，@f0±35 MHz 带外抑制≥40 dB。该设计满足指标要求，在低损耗和通道性能一致方面表现较好。

Based on the widespread use of frequency-selective filtering components in modern communication systems， in this paper we introduce a switchable filter component exploiting dielectric filters. By optimizing the layout， the interference caused by nearby metal shielding on the performance of the dielectric filter is effectively mitigated. In addition， electromagnetic analysis is performed to evaluate the crosstalk effects within RF circuits. Experimental results demonstrate that the proposed filter component achieves an insertion loss of less than 4. 1 dB， a -1. 8 dB bandwidth exceeding 35 MHz， a VSWR below 1. 8， and an out-of-band suppression exceeding 40 dB at f0±35 MHz. The design satisfies the required performance specifications and exhibits strong performance in terms of both insertion loss and channel consistency.

TN384；TN713