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一种用于3G通信的同轴腔射频滤波器综合设计
俞兴明,朱其凯
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(苏州市职业大学 电子信息工程系,江苏 苏州 215104;苏州大学 电子信息学院,江苏 苏州 215006;3.苏州易特诺科技股份有限公司,江苏 苏州 215021)
摘要:
基于同轴腔滤波器的基本理论,运用综合设计方法计算出一种中心频率为2.160 GHz、 带宽为20 MHz的用于3G移动通信的七同轴腔滤波器腔体的结构尺寸,并计算出腔间的耦 合系数;再应用微波三维电磁仿真软件HFSS仿真得出的腔间耦合系数和耦合孔大小的关系曲 线,得到了耦合孔半径尺寸;调试实测结果符合设计预期,并说明了实际调试时的注 意因素。
关键词:  3G移动通信  基站  同轴腔  射频带通滤波器  综合设计
DOI:
基金项目:苏州市职业大学校级科研课题资助项目(SZDG4-11008)
Synthetical design of a coaxial cavity RF filter used in 3G communication
YU Xing-ming,ZHU Qi-kai
()
Abstract:
The structure sizes of coaxial RF filters′ cavities are calculated by con ventional method based on coaxial filters′ basic theory.The filter with 2.1 60 GHz center frequency and 20 MHz bandwidth is used in base stations of 3G mobile communication. The diameters of coupling apertures between the cav ities are acquired by simulating the relationship between coupling diam eter aperture and coupling coefficient with 3D electromagnetism simulation softw are HFSS. Actual test result of frequency response achieves the desired prosp ects, and some attentive factors in testing are illuminated.
Key words:  3G mobile communication  base station  coaxial cavity  R F band pass filter  synthetical design