论文部分内容阅读
为了增加传统二次分谐波混频器的工作带宽,提出了一种适用于W波段的宽带、高中频二次分谐波混频器结构. 该结构采用宽带带通滤波器和低通滤波器替代传统分谐波混频器中的开路枝节和短路枝节,实现混频器的宽带设计. 此外,由于在射频端无需使用侧边平行耦合微带线带通滤波器,所提出的混频器结构在 W 波段可以采用普通微波混合集成电路工艺实现. 测试结果表明,利用所提出结构设计的 W 波段二次分谐波混频器射频工作频带为 80 ～107. 5 GHz,中频工作频率可达18 GHz. 测试结果还表明,在工作频带内,混频器的单边带变频损耗小于 13. 7 dB; 当射频频率为 92. 5 GHz、中频频率为 3 GHz 时,变频损耗最小,约为9 dB. 由此可见,在W波段所提出的混频器结构能实现较大的工作带宽.
In order to increase the working bandwidth of the traditional second subharmonic mixer, a wideband and high intermediate frequency subharmonic mixer suitable for W band is proposed, which uses a wideband band-pass filter and a low-pass filter Instead of open branch and short branch in the traditional subharmonic mixer, to realize the broadband design of the mixer.Furthermore, since it is not necessary to use the side-parallel coupled microstrip line band-pass filter at the radio frequency, the proposed mixing The structure of the device can be realized by using a conventional microwave hybrid integrated circuit technology in the W band. The test results show that the working frequency of the W band second harmonic subharmonic mixer using the proposed structure is 80 to 107.5 GHz, Up to 18 GHz. The test results also show that the single-sideband frequency conversion loss of the mixer is less than 13.7 dB in the working frequency band, the least is the loss of frequency conversion when the radio frequency is 92.5 GHz and the intermediate frequency is 3 GHz, Is 9 dB.Thus, the mixer structure proposed in the W band can achieve a large working bandwidth.