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传统增益均衡器在低频段存在尺寸过大的问题,不能满足小型化的需求。本文采用LTCC(低温共烧陶瓷)工艺,设计了一种小型化的增益均衡器。利用LTCC的多层结构实现螺旋电感和双层平行板电容模型构造出谐振单元,结构紧凑,有效的减小了谐振电路的体积。本文设计出的均衡器体积为7mm×15.45mm×0.47mm,均衡量大于15d B,最小插损0.58d B,回波损耗优于15d B。该设计为低频段的均衡器小型化提供了一种新的实现方法。
The traditional gain equalizer has the problem of over-size in the low frequency band and can not meet the demand of miniaturization. In this paper, LTCC (low temperature co-fired ceramic) process, designed a miniaturized gain equalizer. The multi-layer structure of the LTCC is used to realize the spiral inductor and the double-layer parallel plate capacitance model to construct the resonance unit, which has the advantages of compact structure and effectively reducing the volume of the resonance circuit. The equalizer volume designed in this paper is 7mm × 15.45mm × 0.47mm, the equalization is greater than 15d B, the minimum insertion loss is 0.58d B, and the return loss is better than 15d B. This design provides a new approach to miniaturization of equalizers in low frequencies.