红外与激光工程, 2017, 46 (4): 0420004, 网络出版: 2017-06-30  

0.1 THz鳍线单平衡式基波混频电路研究

Development of 0.1 THz finline fundamental single-balanced mixer circuit
作者单位
1 专用集成电路国家级重点实验室, 河北 石家庄 050051
2 中国电子科技集团公司第十三研究所, 河北 石家庄 050051
摘要
研究了一种基于石英基片的0.1 THz频段的鳍线单平衡混频电路, 混频电路的射频和本振信号分别从WR10标准波导端口通过波导单面鳍线微带过渡和波导微带探针过渡输入, 中频信号通过本振中频双工器输出。这是一种新型的混频电路形式, 与传统的W波段混频器相比, 混频电路可以省略一个复杂的W波段滤波器, 具有电路设计简单、安装方便的特点。该电路使用两只肖特基二极管通过倒装焊工艺粘结在厚度为75 μm的石英基片上, 石英基片相对传统基板, 可以极大提高电路加工精度。在固定50 MHz中频信号时, 射频90~110 GHz范围内, 0.1 THz混频器单边带变频损耗小于9 dB。
Abstract
This design, fabrication and test of a 0.1 THz fundamental finline single-balanced mixer circuit on a single quartz substrate was presented. The local oscillator(LO) input signal was feeded from WR10 waveguide to a suspended microstrip line, the radio frequency(RF) input signal was also feeded from WR10 waveguide to a finline, and the intermediate frequency(IF) signal was taken to the output port through a LO-IF duplexer. This novel mixer circuit can omit a complex W-band filter compared to traditional mode. The circuit features simple design and easy assemblage. A pair of flip-chipped diodes rested on the 75 μm thick quartz substrate, which could improve the size precision of circuit, constitute the basic balanced mixing circuit. After the mixer circuit is fabricated, it owns a 90-110 GHz operating frequency, and its single side band conversion loss is better than 9 dB when the IF is fixed at 50 MHz.

杨大宝, 王俊龙, 张立森, 邢东, 梁士雄, 赵向阳, 冯志红. 0.1 THz鳍线单平衡式基波混频电路研究[J]. 红外与激光工程, 2017, 46(4): 0420004. Yang Dabao, Wang Junlong, Zhang Lisen, Xing Dong, Liang Shixiong, Zhao Xiangyang, Feng Zhihong. Development of 0.1 THz finline fundamental single-balanced mixer circuit[J]. Infrared and Laser Engineering, 2017, 46(4): 0420004.

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