In this paper, we present a quadrature-phase oscillator that can provide four output voltages while operating from a single 0.5 V supply. The oscillator is based on two cross-coupled modified differential pair cells and provides signals with a phase difference of $\pm 180°$ or $\pm 90°$ depending on the chosen output nodes. A test chip with an active area of 0.175 mm² was designed and fabricated in a 65-nm CMOS process and its measurement results show a phase noise of −119.5 dBc/Hz at 1 MHz offset from a carrier frequency of 1.967 GHz while consuming 6.15mW. Finally, experimental results show a FoM of 185.5 dB for the core oscillator and a quadrature-phase error of less than $\pm 0.5°$.

在本文中，我们介绍了一种正交相位振荡器，该振荡器可以在0.5 V单电源下工作时提供四个输出电压。该振荡器基于两个交叉耦合的改进差分对单元，并提供相位差为$\pm 180°$ 要么 $\pm 90°$取决于所选的输出节点。在65 nm CMOS工艺中设计和制造了一个有效面积为0.175 mm ²的测试芯片，其测量结果显示，与1.967 GHz的载波频率偏移1 MHz时，相位噪声为−119.5 dBc / Hz，消耗6.15 GHz兆瓦 最后，实验结果表明，核心振荡器的FoM为185.5 dB，正交相位误差小于$\pm 0.5°$。