[1]姜 杨,孙志刚,鞠丽娟.一种双端恒阻滤波器的分析与设计[J].大众科技,2019,21(10):6-9.
　Analysis and Design of A Noval Constant-Impedance Lowpass Filters[J].Popular Science & Technology,2019,21(10):6-9.
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一种双端恒阻滤波器的分析与设计()
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《大众科技》[ISSN:1008-1151/CN:45-1235/N]

卷:
21
期数:
2019年10
页码:
6-9
栏目:
信息技术与通信
出版日期:
2019-10-20

文章信息/Info

Title:
Analysis and Design of A Noval Constant-Impedance Lowpass Filters
作者:
姜 杨 1;  孙志刚 2;  鞠丽娟 1
（1.同方电子科技有限公司，江西 九江 332002； 2.解放军 65052 部队，吉林 白城 137000）
关键词:
接收通道; 混频杂散; 恒阻滤波器;  混频互调; 电压驻波比（VSWR）
Keywords:
receiver channel;  mixer spurs;  constant impedence filter;  mixer intermodulation;  VSWR
文献标志码:
A
摘要:
针对接收机的接收通道杂散特性显著受混频杂散以及混频互调影响的问题，研制了一种双端恒阻滤波器，其具 有在射频频率范围内不论在带内还是带外电压驻波比始终小于 2 的特点，可级联在混频器的输入输出端，将混频杂散以及混频互调信号吸收在该恒阻电路中，以降低混频杂散的幅度。以获取恒阻特性为原则，对该电路的结构进行了理论分析，推导得到双端恒阻滤波器的色散参数，并最终得到电路参数。最后，设计了一个截止频率为 30MHz 的双端恒阻低通滤波器，通带内外的 电压驻波比（VSWR）均小于 1.2，从而验证了该恒阻滤波器的可行性。
Abstract:
Due to the spurs of the receiver channel is affected by the mixer spurs and the mixer intermodulation, a two ports with constant impedence filter is designed. The (VSWR) is always smaller than 2, and it can be connected the input and output end of the mixer. The mixing spurious and the intermodulation signals can be absorped by the constant resistance circuit. In this paper, the dispersion parameters of the two-terminal constant-resistance filter are analyzed. Based on the principle of obtaining constant-resistance characteristics, the structure of the circuit is undertaked theoretical derivation, and the actual calculated parameters of the circuit are extracted. Finally, a consistent impedence low-pass filter with 30MHz cutoff frequency is designed, and the average VSWR in the inband and outband is smaller than 1.2. The results verify the feasibility of the filter structure.

参考文献/References:

[1] Gupta D, Kirichenko D E, Dotsenko V V, et al. Multifunction Digital-RF receiver systems[J]. IEEE Transactions on Applied Superconductivity, 2011, 21(3):883-890. [2] Andrews C, Molnar A C. A Passive mixer-first receiver with digitally controlled and widely tunable RF interface[J]. IEEE Journal of Solid-State Circuits, 2010, 45(12):2696-2708. [3] Zhang N, Deng Z, Sen F. CPW Tunable band-stop filter using hybrid resonator and employing RF MEMS capacitors[J]. IEEE Transactions on Electron Devices, 2013, 60(8):2648-2655. [4] Wang H, Chu Q X. A Narrow-band hairpin-comb two-pole filter with source-load coupling[J]. IEEE Microwave and Wireless Components Letters, 2010, 20(7):372-374. [5] Luo S, Zhu L, Sun S. Stopband-expanded low-pass filters using microstrip coupled-line hairpin units[J]. IEEE Microwave and Wireless Components Letters, 2008, 18(8): 506-508. [6] Lenka M K, Banerjee G. A wideband blocker- tolerant receiver with frequency-translational resistive feedback[J]. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2019, 27(5):993-1006. [7] Chehrazi S, Mirzaei A, Abidi A A. Second-order intermodulation in current-commutating passive FET mixers[J]. IEEE Transactions on Circuits and Systems I: Regular Papers, 2009, 56(12):2556-2568.[8] Andrews C, Molnar A C. Implications of passive mixer transparency for impedance matching and noise figure in passive mixer-first receivers[J]. IEEE Transactions on Circuits and Systems I: Regular Papers, 2010, 57(12): 3092-3103. [9] 张钰英,胡诗锦,石玉.基于正交相位的吸收式带通滤波器组件设计[J].磁性材料及器件,2017(3):37-45. [10] 秦巍巍,石玉,赵宝林.新型吸收式微带线带通滤波器的仿 真设计[J].磁性材料及器件,2015(1):50-54.

备注/Memo

备注/Memo:
【收稿日期】2019-08-14 【作者简介】姜杨（1986－），男，山西大同人，同方电子科技有限公司工程师，研究方向为无线通信系统、电子对抗。
更新日期/Last Update: 2020-02-13