A 324-GHz Source/Modulator With-6.5 dBm Output Power

作者：Li Yihu^*; Goh Wang Ling; Liu Chao; Cui Bohua; Liu Haitao; Xiong Yong Zhong

来源：IEEE Transactions on Terahertz Science and Technology, 2015, 5(3): 412-418.

DOI：10.1109/TTHZ.2015.2411053

• Cascaded
• differential pair
• push-push
• signal source
• stacked

This paper presents a 324-GHz signal source/transmitter. Input signal of 81 GHz is applied to a differential pair for conversion to 324 GHz via two cascaded push-push frequency doublers. Stacked push-push configuration is used for enhancing the output power at 324 GHz and passive baluns with asymmetrical grounding stub is deployed to improve the power efficiency. The 81-GHz signal can correspondingly be modulated to function as a modulator. The proposed design is fabricated using 0.13-mu m SiGe BiCMOS process. The total chip area is 0.95 mm x 1 mm. With the buffers, the total DC consumption is 42.5 mW. The maximum output power is -6.5 dBm at 324 GHz when the input power of the 81-GHz signal is of 0 dBm. The ability to transmit modulated signals has also been demonstrated in the proposed circuit.

• 出版日期2015-5
• 单位中国工程物理研究院; 南阳理工学院