A Cancellation Technique for Reciprocal-Mixing Caused by Phase Noise and Spurs
A Cancellation Technique for Reciprocal-Mixing Caused by Phase Noise and Spurs
复制标题
相位噪声和杂散引起的相互混频的消除技术
DOI：
10.1109/jssc.2013.2283758
复制
发表时间：
2013
影响因子：
5.4
通讯作者：
H. Darabi
中科院分区：
文献类型：
--
作者：
M. Mikhemar;D. Murphy;A. Mirzaei;H. Darabi
相位噪声和杂散滤波技术可在存在-15 dBm阻断器的情况下将相位噪声对接收机噪声系数的贡献抑制25 dB，仅消耗8 mA电流，弥补了环形振荡器和LC振荡器之间的性能差距。该技术打破了振荡器中功率和相位噪声之间的传统权衡。它利用相位噪声在载波周围的对称性，利用在两倍阻塞拍频处的互易混频镜像来抵消接收频带内的噪声。
A phase noise and spur filtering technique suppresses the phase-noise contribution to the receiver noise figure in the presence of a -15 dBm blocker by 25 dB consuming only 8 mA, bridging the performance gap between ring oscillators and LC-oscillators. The technique breaks the conventional trade-off between power and phase-noise in oscillators. It makes use of the symmetry of phase noise around the carrier by using the image of the reciprocal-mixing at double the blocker beat frequency to cancel noise in the receive-band.