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A 59-to-276-GHz CMOS Signal Generator Using V aractor-Less VCO and Dual-Mode ILFD
提出一种超宽带毫米波和亚太赫兹信号发生器，采用无变容四频VCO和双模ILF技术。
频率调谐范围58.8至275.6 GHz，相位噪声-115.8至-89.2 dBc/Hz，功耗54 mW，核心面积0.65 mm²
毫米波亚太赫兹无变容VCO双模ILF频率倍增器
▸创新点1：无变容四频VCO（电路创新），采用开关四重线圈变压器技术动态调节谐振线圈电感值，替代传统变容二极管，显著提升频率调谐范围（58.8-275.6 GHz）并降低相位噪声（-115.8 dBc/Hz @10MHz）。
▸创新点2：双模注入锁定分频器（电路创新），提出锁频范围增强技术，通过可切换工作模式（基波/谐波注入）实现宽频带分频覆盖，支持超宽带信号生成且功耗仅54mW。
▸创新点3：自混频频率倍增器（系统创新），利用非线性混频效应扩展输出频率至sub-THz频段（276GHz），省去传统倍频器级联结构，优化面积效率（0.65mm²核心面积）。
▸创新点4：功率高效注入锁定驱动器（电路创新），采用ILO结构驱动后续倍频级，在保证信号完整性的同时降低整体功耗，FoMT达-190.4dBc/Hz。
Abstract
An ultrawideband millimeter-wave (mm-Wave) and subterahertz (sub-THz) signal generator is proposed leveraging a varactor-less quad-band voltage-controlled oscillator (QB-VCO), a dual-mode injection-locked frequency divider (DM-ILFD), a power-efficient injection-locked oscillator (ILO) as a driver, and self-mixing-based frequency multipliers for frequency extension. A switched-quadruple-coil transformer is proposed to vary the inductances of the resonant coils in the transformer tank to improve the frequency tuning range of the varactor-less QB-VCO. Besides, a locking-range-enhancement technique is proposed for the DM-ILFD. Implemented in a 65-nm CMOS process, the proposed mm-Wave and sub-THz signal generator achieves a record frequency tuning range from 58.8 to 275.6 GHz with 10-MHz offset phase noise from −115.8 to −89.2 dBc/Hz, while consuming 54 mW and occupying a core area of 0.65 mm 2, corresponding to a FoM T of −190.4 dBc/Hz.