| 摘要: |
| 提出了一种次谐波混频技术结合宽带匹配滤波电路的设计方法，能有效降低本振源的制作难度，并可扩展中频带宽。应用高频场仿真软件以及谐波平衡仿真软件，研制了两个频段的超宽带次谐波混频器。测试结果：K频段混频器，固定本振频率15 GHz，射频频率在18～26.5 GHz的频带内变化时，变频损耗小于10.7 dB，最小变频损耗为7.5 dB；Ka频段混频器，固定本振频率22 GHz，射频频率在26.5～40 GHz的频带内变化时，变频损耗小于11.5 dB，最小变频损耗为8 dB。测试结果指标与传统的双平衡混频器指标相当，证明了电路设计方案的正确性。 |
| 关键词: 毫米波 超宽带 次谐波混频 匹配滤波 变频损耗 |
| DOI： |
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| Development of a millimeter wave ultra-wideband subharmonically pumped mixer |
| LI Kai |
| () |
| Abstract: |
| This paper gives the design method of harmonic mixing technique combined with broadband matching filter circuit. The design difficulty of local oscillator(LO) source can be greatly reduced and intermediate frequency bandwidth can be extended by adopting the design method.With HFSS and ADS, two Sub-harmonic mixers are designed. When LO frequency is 15 GHz,and radio frequency varies from 18 GHz to 26.5 GHz,the conversion loss of K-band mixer is less than 10.7 dB and the least is 7.5 dB. When LO frequency is 22 GHz,and radio frequency varies from 26.5 GHz to 40 GHz,the conversion loss of Ka-band mixer is less than 11.5 dB and the least is 8 dB. The test results can be compared with that of traditional double balance mixer,which proves the correctness of the design method. |
| Key words: millimeter wave UWB subharmonically pumped mixer matching filter conversion loss |
