An Ultra-wideband Doubler Chain with 43-65 dBc Fundamental Rejection in Ku/K/Ka Band  

作　　者：Long WANG Jixin CHEN Debin HOU Xiaojie XU Zekun LI Dawei TANG Rui ZHOU Hao QI Yu XIANG 

机构地区：[1]State Key Laboratory of Millimeter Waves,Southeast University,Nanjing 210096,China [2]MISIC Microelectronics Co.Ltd.,Nanjing 211111,China

出　　处：《Chinese Journal of Electronics》2024年第5期1204-1217,共14页电子学报（英文版）

摘　　要：In this paper,a double-balanced doubler chain with>43-dBc fundamental rejection over an ultra-wide bandwidth in 0.13-μm SiGe BiCMOS technology is proposed.To achieve high fundamental rejection,high output power,and high conversion gain over an ultra-wideband,a double-balanced doubler chain with pre-and post-drivers employs a bandwidth broadening technique and a ground shielding strategy.Analysis and comparison of the singlebalanced and double-balanced doublers were conducted,with a focus on their fundamental rejection and circuit imbalance.Three doublers,including a passive single-balanced doubler,an active single-balanced doubler,and a passive double-balanced doubler were designed to verify the performance and characteristics of the single-and doublebalanced doublers.Measurements show that the proposed double-balanced doubler chain has approximately 15 dB better fundamental rejection,and more than twice the relative bandwidth compared to the single-balanced doubler chain fabricated with the same process.Over an 86.9%3-dB bandwidth from 13.4 GHz to 34 GHz,the double-balanced doubler chain delivers 14.7-dBm peak output power and has>43-/33-dBc fundamental/third-harmonic rejection.To the authors’best knowledge,the proposed double-balanced doubler chain shows the highest fundamental rejection over an ultra-wideband among silicon-based doublers at millimeter-wave frequency bands.

关 键 词：Bandwidth DOUBLER Double-balanced Fundamental rejection Single-balanced 

分 类 号：TN771[电子电信—电路与系统]