一种带ftl和开关电容阵列的q波段超低抖动亚谐波注入锁频四倍器

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC
Po-Yuan Chen;Hong-Yeh Chang
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引用次数: 0

摘要

本文采用90纳米CMOS工艺,提出了一种带频率跟踪环(FTL)和2位开关电容阵列(SCA)的q波段超低抖动亚谐波注入锁频四倍器(SILFQ)。为了全面提高本振(LO)产生的整体性能,所提出的SILFQ不仅采用FTL自适应控制锁定机制的变化,而且史无前例地集成了SCA和倍频器的组合,有效地扩大了整体锁定范围。所提出的带有SCA的SILFQ的锁定范围为6.4 GHz。使用FTL,在1 MHz偏移处测量的相位噪声和从1 kHz到40 MHz积分的均方根(rms)抖动分别为- 128.8 dBc/Hz和10.1 fs。注入信号和输出信号之间的抖动退化仅在4秒内。直流功耗为37.4 mW,差分输出功率为- 2 dBm,芯片尺寸紧凑,为0.7 mm2。由于具有优异的电路性能,该设计非常适合先进的毫米波(mm-wave)应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Q-Band Ultralow-Jitter Subharmonically Injection-Locked Frequency Quadrupler WithFTL and Switched-Capacitor Array
In this letter, a Q-band ultralow jitter subharmonically injection-locked frequency quadrupler (SILFQ) with frequency-tracking loop (FTL) and 2-bit switched-capacitor array (SCA) is proposed using 90-nm CMOS process. To comprehensively enhance the overall performance of local oscillator (LO) generation, the proposed SILFQ not only employs FTL to adaptively control the locking mechanism over variations but also integrates an unprecedented combination of SCA and frequency multiplier to effectively broaden the overall locking range. The proposed SILFQ with SCA demonstrates a measured locking range of 6.4 GHz. With FTL, the measured phase noise at 1-MHz offset and root-mean-square (rms) jitter integrated from 1 kHz to 40 MHz are −128.8 dBc/Hz and 10.1 fs, respectively. The jitter degradation between injection and output signal is merely within 4 fs. The dc power consumption is 37.4 mW, with a differential output power of −2 dBm and a compact chip size of 0.7 mm2. Featuring several excellent figure of merits (FoMs), this design is well-suited for advanced millimeter-wave (mm-wave) applications due to its superior circuit performance.
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