| 摘要: |
| 介绍了准椭圆函数滤波器的一般设计方法,并给出了一种用于S频段、具有非对称传输零点、3阶同轴线型带通滤波器的设计实例,使用部分分式展开法综合出M矩阵,给出仿真模型和仿真结果.测试结果表明,该滤波器具有低插损、高阻带抑制等特点,设计方法切实可行. |
| 关键词: 微波设备 带通滤波器 准椭圆函数 传输零点 耦合矩阵 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:December 04, 2006Revised:March 14, 2007 |
| 基金项目: |
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| A General Design Method of Quasi-elliptic Function Bandpass Filters |
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| Abstract: |
| A general design method of quasi-elliptic function bandpass filters(BPFs) is introduced,and an example of an S-band asymmetric quasi-elliptic function filter coaxial BPF with one transmission zero is given.The M matrix is synthesized by partial fraction expansion.The simulation model and result are provided.The testing result shows that the BPF has the character of low insertion loss and greater skirt selectivity. |
| Key words: microwave equipment,bandpass filter(BPF),quasi-elliptic function,transmission zero,coupling matrix |
