Standing wave oscillators utilizing wave-adaptive tapered transmission lines

被引：67
作者：
Andress, WF [1 ]
Ham, D [1 ]
机构：
[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA
来源：
IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2005年 / 40卷 / 03期
关键词：
integrated circuits; oscillators; phase noise; quality factor; radio-frequency (RF); standing waves; standing wave oscillators; tapered transmission lines; transmission lines;
D O I：
10.1109/JSSC.2005.843600
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we introduce a novel standing wave oscillator (SWO) utilizing standing-wave-adaptive tapered transmission lines. This structure enhances Q and lowers phase noise through loss-reducing shaping of the transmission line, such that it is adapted to the position-dependent amplitudes of standing waves. Measurements validate the advantages of the proposed technique. The phase noise of a MOS SWO with the tapered line is 5-10 dB less than that of a uniform-line MOS SWO over a wide range of offset frequencies, centered about 15 GHz. Demonstrating a valuable exploitation of standing wave properties, the novel design concept boosts the potential for the emergence of standing wave oscillators as a useful alternative to the traditional lumped LC oscillator.
引用
收藏
页码：638 / 651
页数：14
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