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目前移动通讯设备对窄带低插损高阻带抑制的滤波器有极大需求,而横向模式耦合谐振滤波器是实现这些性能的最佳方案之一。在理论上,本文应用陈东培和Hartmann等提出的耦合模理论模型对这种滤波器进行了分析设计;在实验上,以ST石英为基底材料,设计制作了152.55MHz频率的器件,器件性能接近目前国外已报道同类器件的水平,最低插损达2.7dB,阻带抑制约60dB,相对带宽0.5%~0.75%。,并能获得平坦的通带。
At present, mobile communication devices have a great demand for filters with narrow insertion loss and high rejection bands, and transverse mode coupling resonance filters are one of the best solutions to achieve these performances. In theory, this paper uses the coupled-mode theory model proposed by Chen Dongpei and Hartmann et al. To analyze and design this filter. In the experiment, we design and produce the device with frequency of 152.55MHz based on ST quartz, and the performance of the device is close At present, foreign countries have reported the level of similar devices, the minimum insertion loss of 2.7dB, stop-band rejection of about 60dB, the relative bandwidth of 0.5% to 0.75%. , And can get a flat passband.