A High Isolation and Low Loss Duplexer Based on SISL Platform
A High Isolation and Low Loss Duplexer Based on SISL Platform
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DOI：
10.1109/mwsym.2018.8439442
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发表时间：
2018-06
期刊：
影响因子：
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通讯作者：
Yutong Chu;Kaixue Ma;Yongqiang Wang
中科院分区：
文献类型：
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作者：
Yutong Chu;Kaixue Ma;Yongqiang Wang
提出了一种基于衬底集成悬吊线（SISL）平台的高隔离低损耗双工器。对应于发射（Tx）和接收（Rx）频段的两个带通滤波器（bpf）都由一个低通滤波器（LPF）和一个高通滤波器（HPF）组成。设计匹配网络，使两条信号传输路径具有高隔离性，并与天线端口匹配。模拟结果与实测结果吻合较好。双工器的工作频率为0.8 GHz和2.5 GHz，即偏差频率为1.7 GHz。该双工器的测量插入损耗为1.26/1.21 dB。获得了60 dB以上的优异隔离。为了进一步降低介质损耗，我们将设计修改为图案悬浮衬底，改进后的双工器在两个工作频段的损耗降低了0.23/0.25 dB。与已有文献相比，所提出的SISL双工器在低损耗、高隔离和自封装方面表现出良好的性能。
This paper presents a duplexer with high isolation and low loss based on the substrate integrated suspended line (SISL) platform. Both the two bandpass filters (BPFs) corresponding to the transmitter (Tx) and the receiver (Rx) bands are composed of a low-pass filter (LPF) and a high-pass filter (HPF). A matching network is designed to connect the two signal transmission paths with high isolation, and match to the antenna port. The simulated and measured results are in good agreement. The operating frequencies of the duplexer are 0.8 and 2.5 GHz, i.e. the deviation frequency is 1.7 GHz. The measured insertion losses of the pro-posed duplexer are 1.26/1.21 dB. Excellent isolation of over 60 dB is obtained. To further reduce the dielectric loss, we modify the design with patterned suspended substrate, and the improved duplexer shows a loss reduction of 0.23/0.25 dB at two operation bands. As compared with the reported works, the proposed SISL duplexer shows good performance in terms of low loss, high isolation, and self-packaging.