一种高可靠连体式介质滤波器设计
A Method of Design Dielectric Monoblock Filter with High Reliability
魏强 1李鲲 1冯小东1
作者信息
- 1. 中国电子科技集团公司 第二十六研究所,重庆 400060
- 折叠
摘要
根据椭圆函数响应,采用相对介电常数为 37 的高品质因数微波介质材料,该文设计了一种低损耗、连体式四级介质滤波器.通过 1-4 谐振器之间使用级联四元组(CQ)电容加载耦合,经优化后滤波器中心频率为1 268 MHz,工作带宽为 25 MHz,插入损耗≤2.5 dB,回波损耗≥18 dB,近端带外抑制≥40 dB.根据仿真模型结构参数,优化成型和金属化工艺,制备得到的样品,通过可靠性环境试验表明,该滤波器的性能测试结果与仿真结果吻合良好.
Abstract
A filter was designed based on elliptic function responses and fabricated using high-Q-factor monolith-ic ceramic materials with a relative permittivity of 37.A SMD monolithic four-cavity dielectric filter with low inser-tion loss was designed and manufactured by leveraging cascaded quadruplet coupling between 1 and 4 resonator,The performance indexes of the optimized filter are as follows:a center frequency of 1 268 MHz,operating bandwidth of 25 MHz,insertion loss≤2.5 dB,return loss≥18 dB,and out-of-band suppression≥40 dB.On the basis of the structural parameters of the simulation model,samples were manufactured using the optimized metallization and molding process.The performance test results conform to the simulation results,demonstrating high reliability.
关键词
介质滤波器/交叉耦合/带外抑制/可靠性Key words
dielectric filter/cross-coupling/out of band suppression/reliability引用本文复制引用
出版年
2024
NETL
NSTL
万方数据