← 返回 JSSC 论文列表JSSC 2007第9期Clocking & PLLs0.18μmVCONeural Network Accelerator
Analysis and Design of Wideband Injection-Locked Ring Oscillators With Multiple-Input Injection
提出多注入技术提升环形振荡器的锁定范围和注入效率。
0.18μm CMOS, 13-25 GHz, 30-45 GHz
注入锁定环形振荡器频率分频多注入技术宽频带
▸创新点1：多注入技术（方法创新） - 通过引入多相位注入信号，显著提高了注入锁定效率，使锁定范围几乎翻倍，解决了传统单端注入技术锁定范围受限的问题。
▸创新点2：宽频带频率分频器（电路创新） - 基于三阶环形振荡器设计，实现了13-25 GHz和30-45 GHz的宽频带2:1和4:1分频功能，覆盖了毫米波频段的多个关键频段。
▸创新点3：优化相位注入（方法创新） - 通过理论分析和实验验证，确定了最佳注入相位组合，最大化锁定范围，为高频分频器设计提供了新的相位优化方法。
▸创新点4：可调自由振荡频率（系统创新） - 通过可调自由振荡频率设计，增强了分频器的适应性，使其能够灵活应对不同输入频率需求，提升了系统的整体性能。
Abstract
In this paper, the locking range of the injection-locked ring oscillators is investigated. To improve the injection efficiency and the locking range for superharmonic frequency division, a multiple-injection technique is proposed. Using a 0.18- m CMOS process, a wideband frequency divider based on a three-stage ring oscillator is implemented for demonstration. With a tunable free-running frequency, the fabricated circuit provides 2:1 and 4:1 frequency division with a single-ended input signal ranging from 13 to 25 and 30 to 45 GHz, respectively. Compared with the case of the single-ended injection, the locking range of the frequency divider almost doubles when multiple-input injection with optimum phases is utilized. The experimental results exhibit good agreement with the theoretical derivation and the circuit simulation.