一种基于0.18μm SiGe BiCMOS工艺的高线性混频器  

A ku-band high linearity mixer in 0.18μm SiGe BiCMOS technology

作　　者：段昊阳 权海洋 王盟皓 魏慧婷 张秋艳 崔旭彤 侯训平 张超轩 DUAN Haoyang;QUAN Haiyang;WANG Menghao;WEI Huiting;ZHANG Qiuyan;CUI Xutong;HOU Xunping;ZHANG Chaoxuan(Beijing Microelectronics Technology Institute,Beijing 100076,China)

机构地区：[1]北京微电子技术研究所,北京100076

出　　处：《微电子学与计算机》2023年第12期95-101,共7页Microelectronics & Computer

摘　　要：设计了一种低本振驱动的高线性混频器,重点关注混频器的线性度性能和本振驱动功率问题.混频器的核心电路结构包含比较器,本振驱动器,双平衡无源混频器和带隙基准电路.为了提供本振信号通路的单端转差分功能,以及减小混频器对本振驱动功率的要求,引入比较器和本振驱动器,并采用双平衡无源混频器提供良好的线性度.采用0.18µm的SiGe双极兼容互补金属氧化物半导体(BiCMOS)工艺,同时支持上变频和下变频功能.实测结果表明,射频端口可覆盖6~18 GHz频段的信号,中频端口可覆盖0~6 GHz频段的信号;下变频时和上变频时的变频损耗典型值分别为-10.0 dB和-9.8 dB;IIP3在工作频段内的最大值分别为23.0 dBm和23.4 dBm;功耗为500 mW.在实现高线性度混频器的基础上,减小了输入本振功率的需求,提高了高线性混频器的实用性.A high linearity mixer with low Local Oscillator(LO)power drive is designed.Focus on the linearity performance and LO drive power of the mixer.The core circuit of the mixer includes comparator,local oscillator driver,double balanced passive mixer and bandgap reference circuit.In order to provide the single to differential conversion of the local oscillator signal path and reduce the mixer's requirements for the local oscillator drive power,comparators and local oscillator driver are introduced,and dual balanced passive mixer is used to provide good linearity.Fabricated in a 0.18 um SiGe Bipolar compatible Complementary Metal-Oxide-Semiconductor(BiCMOS)technology,the mixer supports both up conversion and down conversion.The test result shows that the Radio Freqency(RF)port of this design can cover the signal of 6-18 GHz,and the Medium Frequency(MF)port can cover the signal of 0-6 GHz;The typical values of conversion gain in down conversion and up conversion are-10.0 dB and-9.8 dB respectively.The maximum values of IIP3 in the operating frequency band are 23.0 dBm and 23.4 dBm respectively.The power consumption is 500 mW.On the basis of realizing the high linearity mixer,the demand for input local oscillator power is reduced,and the practicability of the high linearity mixer is improved.

关 键 词：无源混频器 低本振驱动 高线性混频器 BICMOS 

分 类 号：TN433[电子电信—微电子学与固体电子学] TN773