L波段LTCC高抑制宽阻带低通滤波器  

An L Band Low-pass Filter with High Stop-band Suppression Based on LTCC Technology

作　　者：刘巍巍 江肖力[1] 梁栋[1] 韩威 贾世旺[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2017年第8期48-51,共4页Radio Engineering

基　　金：国家自然科学基金资助项目(61404119)

摘　　要：针对微波变频模块小型化需求,基于低温共烧陶瓷(LTCC)技术,设计了一款高抑制度宽阻带的L频段低通滤波器。为增加滤波器高端的抑制度,以椭圆函数为原型,采用简化原理图中各元件值的方法并合理的设计元件外形和布局方式,有效利用结构内部的电磁耦合作用,使高端频段达到较高抑制度。实际加工制成的滤波器在3.4 GHz、5.65 GHz和8 GHz处阻带抑制分别达到了41 dB、59 dB和45 dB。在电路中利用该滤波器可有效地防止其他频段的信号干扰,增强电路的抗干扰能力。Based on Low Temperature Co-fired Ceramic（LTCC） technology,a high suppression wide band low-pass filter of L band is designed and fabricated,for the miniaturization demand of microwave conversion module.Such LPF with high stop-band suppression within a wide frequency range is obtained by using the elliptic function theory,simplifying the circuit element values,optimizing the multilayer circuit layouts,and utilizing the EM coupling effects in the LTCC structures.The filter is made and tested.The results show that the measured stop-band suppression is 41 dB,59 dB and 45 dB respectively at frequency of 3.4 GHz,5.65 GHz and 8 GHz.The designed LPF can provide improved stop-band suppression performance and effectively prevent the signal crosstalk in high frequency and with band applications.

关 键 词：集总元件 低通滤波器 宽阻带 基于低温共烧陶瓷技术 

分 类 号：TP911[自动化与计算机技术]