Transmission-line stabilized monolithic oscillators
Transmission-line stabilized monolithic oscillators
复制标题
传输线稳定单片振荡器
DOI：
10.1109/22.903106
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
I. Robertson
中科院分区：
文献类型：
--
作者：
K. Ang;M. Underhill;I. Robertson
本文提出了一种用于单片振荡器频率稳定和相位噪声降低的新技术。它采用简单的传输线谐振器，该谐振器具有多个波长以提高振荡器品质因数。应用该技术实现了 20 和 40 GHz 的单片振荡器。两个振荡器的相位噪声均降低了 20 dB 以上。对于 20 GHz 振荡器，获得的单边带相位噪声在 100 kHz 偏移时为 -100 dBc/Hz；对于 40 GHz 振荡器，在 1 MHz 偏移时获得的单边带相位噪声为 -90 dBc/Hz。该方法是通过使用现成的传输线来实现的，传输线的一端开路或短路，另一端连接到单片微波集成电路 (MMIC) 振荡器。因此，它在开发具有增强噪声性能的低成本 MMIC 振荡器方面具有巨大潜力。
A novel technique for frequency stabilization and phase-noise reduction of monolithic oscillators is presented in this paper. It employs simple transmission-line resonators, which are many wavelengths long to increase the oscillator quality factor. Monolithic oscillators at 20 and 40 GHz are realized for the application of this technique. Phase noise reduction of more than 20 dB was achieved for both oscillators. The single-sideband phase noise obtained was -100 dBc/Hz at 100-kHz offset for the 20-GHz oscillator and -90 dBc/Hz at 1-MHz offset for the 40-GHz oscillator. The approach is implemented by using readily available transmission lines, which are open- or short-circuited at one end and connected to the monolithic-microwave integrated-circuit (MMIC) oscillator at the other end. Thus, it presents significant potential in the development of low-cost MMIC oscillators with enhanced noise performance.