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JSSC 2007第9期Clocking & PLLs0.18μmVCO

A 1-V 17-GHz 5-mW CMOS Quadrature VCO Based on

基于变压器耦合的1V 17GHz 5mW CMOS正交压控振荡器
17GHz, 16.5%调谐范围, 49dBc/Hz@1MHz, 5mA@1V
QVCO变压器耦合CMOS低功耗高频
创新点1:变压器耦合技术(方法创新) - 该论文首次提出在QVCO中使用变压器耦合技术替代传统的有源耦合技术,通过电磁耦合实现两个LC振荡器的同步,显著降低了功耗(5mW)和相位噪声(-49dBc/Hz @1MHz),同时提高了频率稳定性。
创新点2:高频宽调谐范围(电路创新) - 通过优化变压器设计和LC谐振电路,实现了17 GHz的高频振荡和16.5%的宽调谐范围,解决了传统QVCO在高频下调谐范围受限的问题,适用于宽带通信系统。
创新点3:低相位噪声设计(性能创新) - 采用对称变压器耦合结构和低噪声偏置技术,将相位噪声降低至-49dBc/Hz @1MHz,优于同类有源耦合QVCO,满足了高频应用对信号纯净度的严格要求。
创新点4:低电压低功耗设计(系统创新) - 在1V电源电压下仅消耗5mA电流,通过优化电路结构和变压器参数,实现了高性能与低功耗的平衡,适合便携式和高集成度应用场景。
Abstract
A 1-V 17-GHz 5-mW quadrature voltage-controlled oscillator (QVCO) based on transformer coupling is presented. Transformer coupling between twoLC tank oscillators is proposed to achieve quadrature outputs with improved performance in terms of high frequency, wide tuning range, low phase noise, and low power as compared to existing active-coupling QVCOs. Implemented in a 0.18- m CMOS process, the proposed QVCO measures a frequency tuning range of 16.5% at 17 GHz and phase noise of /49/49/48dBc Hz at 1 MHz offset while consuming 5 mA from a 1-V power supply and occupying a core area of 0.37 mm/50.