ZHOU Yinliang,CHEN Changming,LIU Xianda,et al.A Reconfigurable Filter with Three Mode[J].Journal of Chengdu University of Information Technology,2025,40(03):318-321.[doi:10.16836/j.cnki.jcuit.2025.03.010]
一种三模可重构滤波器
- Title:
- A Reconfigurable Filter with Three Mode
- 文章编号:
- 2096-1618(2025)03-0318-04
- Keywords:
- filter; reconfigurability; varactor diode; PIN diode
- 分类号:
- TN713
- 文献标志码:
- A
- 摘要:
- 基于椭圆函数原型滤波器,提出一种工作在200 MHz～2 GHz三模可重构滤波器。采用PIN二极管构成的射频开关加以组合,实现低通滤波、高通滤波、带通滤波3种不同模式。通过加载变容二极管,完成其中心频率和带宽调谐。测试结果表明,在3种不同模式下,滤波器的通带内插入损耗范围均在0.78～2.85 dB,回波损耗优于10 dB; 低通滤波器的截止频率在1.12～1.65 GHz连续可调,高通滤波器和带通滤波器的通带调谐范围分别为840 MHz～1.3 GHz和870 MHz～1.5 GHz。测试和仿真结果吻合较好,研究成果为可重构滤波器的设计提供一种方案。
- Abstract:
- A three-mode reconfigurable filter operating at 200 MHz～2 GHz based on the elliptic function prototype filter is proposed in this paper. By combining radio frequency switches composed of PIN diodes, it can achieve three different modes of filtering: low-pass filtering, high-pass filtering, and band-pass filtering. Tuning of the center frequency and bandwidth is achieved by loading variable capacitance diodes. Test results indicate that the insertion losses within the passband for the filter in the three modes range from 0.78 to 2.85 dB, and the return losses exceed10 dB. The cutoff frequency of the low-pass filter is continuously adjustable in the range of 1.12 to 1.65 GHz, while the tuning range of the high-pass filter and band-pass filter are 840 MHz to 1.3 GHz and 870 MHz to 1.5 GHz, respectively. Both test and simulation results demonstrate good agreement, validating the effectiveness of the proposed design as a viable solution for reconfigurable filter development.
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备注/Memo
收稿日期:2023-11-30