S波段LTCC带通滤波器的改进设计

一种S波段LTCC带通滤波器的改进设计

内容简介：设计了一种小型化的低温共烧陶瓷(LTCC)滤波器,该滤波器电路由电容耦合的二阶谐振腔组成.设计了该滤波器的三维多层结构,利用组件间的耦合效应,产生一个传输零点,提高了滤波器性能.仿真结果表明,该滤波器中心频率为3.41 GHz,相对带宽为5.9%(200 MHz),体积为3.8 mm×2.8 mm×0.8 mm,在S波段的通讯,雷达等射频系统有广泛的应用.

Abstract：The new minitype band-pass filter (BPF) fabricated by low-temperature cofired ceramics (LTCC) was designed.The circuit of this filter was composed of 2-orders resonant cavity by capacitive coupling.The three-dimensional multi-layer structure of this filter was designed,and the adding of a transmission zero improved the performance of this filter.The simulating results show that the center frequency of this filter is 3.41 GHz,and its relative bandwidth is 5.9%(200 MHz).It has a wide range of application in S-band of communication system and other RF systems with its size of only 3.8 mm × 2.8 mm × 0.8 mm.

作者：杨海峰, 邢孟江, 李跃进,

关键词：带通滤波器, 低温共烧陶瓷, 传输零点