| 韩星宇,年夫顺,代秀,张婷.高本振中频隔离超宽带混频芯片设计[J].电子测量与仪器学报,2024,38(3):86-93 |
| 高本振中频隔离超宽带混频芯片设计 |
| Design of ultra-broadband mixer chip with high LO-IF isolation |
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| DOI： |
| 中文关键词: 混频器 谐波混频 反向二极管对 超宽带 |
| 英文关键词:mixer harmonic mixer reverse-diode-pair ultra-broadband |
| 基金项目: |
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| Author | Institution |
| Han Xingyu | School of Instrument and Electronics, North University of China, Taiyuan 030051, China |
| Nian Fushun | 1.School of Instrument and Electronics, North University of China, Taiyuan 030051, China;
2.CETC Instruments Co., Ltd., Qingdao 266555, China |
| Dai Xiu | CETC Instruments Co., Ltd., Qingdao 266555, China |
| Zhang Ting | School of Instrument and Electronics, North University of China, Taiyuan 030051, China |
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| 摘要点击次数: 815 |
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| 中文摘要: |
| 超宽带谐波混频器一般采用本振中频双工器，从本振通路引出中频信号。但是当本振频率和中频频率相近或者重叠时，难以实现本振到中频高隔离。本文采用了不同于常用谐波混频器结构，用射频中频双工器替代了本振中频双工器，从射频通路引出中频信号，设计了30~110 GHz 4次谐波混频芯片，并进行了封装实验测试。经测试，4次谐波混频器射频频率30~110 GHz，中频频率1 GHz的变频损耗小于25 dB，DC-15 GHz本振和中频端口间的隔离度可达30 dB，固定本振时中频频率DC-7 GHz变频损耗小于28 dB。因此，本设计可有效隔离频率相近的本振和中频信号，为拓宽中频带宽提供可能。 |
| 英文摘要: |
| Ultra-broadband harmonic mixers generally use LO-IF duplexers to extract IF signals from the LO circuit. However, when the LO frequency and the IF frequency are similar or overlap, it is difficult to achieve high LO-IF isolation. In this paper, RF-IF duplexer is used to replace the LO-IF duplexer, different from the common harmonic mixer structure, and IF signal is extracted from the RF circuit. A 30~110 GHz fourth harmonic mixer chip is designed and tested. After the four harmonic mixer testing, RF sweep frequency range 30~110 GHz, frequency conversion loss is less than 25 dB at IF frequency 1 GHz. In DC-15 GHz, the isolation between the LO and the IF ports is up to 30 dB. When the local vibration is fixed, the frequency conversion loss of IF sweep frequency DC-7 GHz is less than 28 dB. Therefore, this design can effectively isolate LO and IF signals with similar frequencies, and it is possible to broaden the IF broadband. |
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