8 mm波段四次谐波混频器的设计
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摘要
针对毫米波接收机直接采用同频段本振源所带来的高成本、难获得的问题,对毫米波谐波混频器降低本振信号频率的原理进行了分析,设计了一款8 mm波段的四次谐波混频器。选用型号为MA4E2039的肖特基势垒二极管对作为核心混频器件,在管对两边加入了匹配电路和滤波器以提高混频效率。仿真结果表明混频器在射频频率34～36 GHz,本振频率7.5～9.5 GHz时的变频损耗约为9 dB,端口隔离度大于20 dB,不仅将混频器的本振频率降为原来所需本振频率的1/4,同时保证了器件的性能。
Aiming at the high cost and difficult problem brought by the millimeter wave receiver directly using the same frequency local oscillator source, the principle of reducing the local oscillator signal frequency by the millimeter wave harmonic mixer is analyzed, and an 8 mm band is designed. For the fourth harmonic mixer, the Schottky barrier diode pair of model MA4 E2039 is selected as the core mixing device, and matching circuits and filters are added on both sides of the tube to improve the mixing efficiency. The simulation results show that the mixer is at RF frequency of 34 to 36 GHz. The frequency conversion loss of the local oscillator frequency is about 9 dB at 7.5 to 9.5 GHz, and the port isolation is greater than 20 dB. This not only reduces the local oscillator frequency of the mixer to a quarter of the original required local oscillator frequency, but also guarantees the device performance at the same time.
Aiming at the high cost and difficult problem brought by the millimeter wave receiver directly using the same frequency local oscillator source, the principle of reducing the local oscillator signal frequency by the millimeter wave harmonic mixer is analyzed, and an 8 mm band is designed. For the fourth harmonic mixer, the Schottky barrier diode pair of model MA4 E2039 is selected as the core mixing device, and matching circuits and filters are added on both sides of the tube to improve the mixing efficiency. The simulation results show that the mixer is at RF frequency of 34 to 36 GHz. The frequency conversion loss of the local oscillator frequency is about 9 dB at 7.5 to 9.5 GHz, and the port isolation is greater than 20 dB. This not only reduces the local oscillator frequency of the mixer to a quarter of the original required local oscillator frequency, but also guarantees the device performance at the same time.
引文
[1] 向博,窦文斌,何敏敏.3 mm波段四次谐波混频器阵的研究[J].微波学报,2011,27(4):38-41.
[2] 管玉龙.Ka波段谐波混频器设计与仿真[D].成都:电子科技大学,2013.
[3] Maestrojuan I,Ederra I,Gonzalo R.Fourth-harmonic Schottky diode mixer development at sub-millimeter frequencies[J].IEEE Transactions on Terahertz Science & Technology,2015,5(3):518-520.
[4] 黄锦沛,唐宗熙,吴韵秋,等.Ka波段镜像抑制谐波混频器设计[J].半导体技术,2012,37(12):53-57.
[5] 安大伟,于伟华,吕昕.基于石英基片的二毫米波段二次谐波混频器设计和研制[J].红外与毫米波学报,2011,30(1):33-37.
[6] 钟伟,张勇,刘伟,等.基于反向并联二极管对的D波段次谐波混频器[J].微波学报,2014,30(1):55-58.
[7] 郭凡玉.K波段镜频抑制谐波混频器的研究[D].成都:电子科技大学,2012.
[8] 许正彬,钱澄,窦文斌,等.基于微带线的W波段二次分谐波混频器设计[J].红外与毫米波学报,2013,32(3):242-247.
[2] 管玉龙.Ka波段谐波混频器设计与仿真[D].成都:电子科技大学,2013.
[3] Maestrojuan I,Ederra I,Gonzalo R.Fourth-harmonic Schottky diode mixer development at sub-millimeter frequencies[J].IEEE Transactions on Terahertz Science & Technology,2015,5(3):518-520.
[4] 黄锦沛,唐宗熙,吴韵秋,等.Ka波段镜像抑制谐波混频器设计[J].半导体技术,2012,37(12):53-57.
[5] 安大伟,于伟华,吕昕.基于石英基片的二毫米波段二次谐波混频器设计和研制[J].红外与毫米波学报,2011,30(1):33-37.
[6] 钟伟,张勇,刘伟,等.基于反向并联二极管对的D波段次谐波混频器[J].微波学报,2014,30(1):55-58.
[7] 郭凡玉.K波段镜频抑制谐波混频器的研究[D].成都:电子科技大学,2012.
[8] 许正彬,钱澄,窦文斌,等.基于微带线的W波段二次分谐波混频器设计[J].红外与毫米波学报,2013,32(3):242-247.