CAJ | 학술논문

为了抑制移动通信基站CDM800MHz上行频段噪声，设计了一款高抑制性能的同轴腔体带通滤波器．该滤波器采用交叉耦合结构、带外产生零点来实现带外的高抑制性能，设计过程采用HFSS和软件AWR的协同仿真．设计主要参数为：中心频率875MHz，插入损耗＜0．25dB，带外抑制＜－80dB＠825～835MHz，回波损耗＞－20dB．仿真设计结果表明：设计滤波器满足指标要求．利用Matlab仿真验证了其高抑制性能的有效性．
위료억제이동통신기참CDM800MHz상행빈단조성，설계료일관고억제성능적동축강체대통려파기．해려파기채용교차우합결구、대외산생영점래실현대외적고억제성능，설계과정채용HFSS화연건AWR적협동방진．설계주요삼수위：중심빈솔875MHz，삽입손모＜0．25dB，대외억제＜－80dB＠825～835MHz，회파손모＞－20dB．방진설계결과표명：설계려파기만족지표요구．이용Matlab방진험증료기고억제성능적유효성．
In order to suppress the uplink noise of the mobile communication base station in CDMA800M networks ,a coaxial cavity band pass filter with high suppression performance is designed . The high suppression performance out of the band is achieved by using the cross coupling structure in the filter and producing zero point .Both HFSS and AWR are used for coordination simulation .The major parameters of the filter are as follow s :the center frequency is 875 M Hz ,the insertion loss is below 0 .25 dB ,the out-of-band rejection is below -80dB@ 825~835 M Hz and the return loss is above -20 dB .T he simulation results show that the coaxial cavity band pass filter can meet the requirements .Finally , Matlab is also used to verify the effectiveness of its high suppression performance .