Design of 1785 to 2190 MHz lumped parameter isolator based on field-circuit combined simulation
何海洋 1奉林晚 1龙兰心 1尹久红1
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作者信息
1. 中国电子科技集团公司第九研究所,四川绵阳 621000
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摘要
提出了一种工作带宽1785～2190MHz的集总参数隔离器设计.隔离器设计使用了高效率的场路联合仿真方法,采用四层电路板交叠的交互电路排布方案.与常规的集总参数隔离器比较,提出的宽带集总参数隔离器频段覆盖三个频段,并且工作带宽内性能指标与窄带器件接近.实测结果显示在1785～2190 MHz工作带宽内,输入输出回波损耗、隔离度均大于15 dB,插入损耗小于2.5 dB,尺寸为7×7 mm.
Abstract
In this paper,a 1785 to 2190 MHz lumped parameter isolator is proposed.High efficiency field and circuit co-simulation was adopts and interactive circuit arrangement scheme of four-layer circuit board was applied.Compared with the conventional isolator,the proposed one covers three frequency bands and its performance is closed to the narrowband isolators.The measured result shows that input-output return loss and isolation are greater than 15 dB within the working bandwidth of 1785-2190 MHz,the insertion loss is less than 2.5 dB,and the size is 7×7 mm.
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