用感性开关电容的正弦波振荡器
AN INDUCTIVE SWITCHED-CAPACITOR OSCILLATOR
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摘要: 正 (一)引言 开关电容(SC)滤波器在1977年被重新提出后,受到了极大的注意。最近,一些作者又利用开关电容方法来实现别的模拟电路,如正弦波振荡器、过零检波器和峰值检波器、跟踪滤波器、锁相环和平衡解调器、压控张弛振荡器,以及模拟延迟线等。 本文描述一种采用感性开关电容的正弦波振荡器。与文献[3]中采用并联开关电容的方案相比,由于感性开关电容在一个时钟周期Tc内,完成两次信息传输,因而预期
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Abstract: An inductive switched-capacitor (i.e., terminal-inverter SC) oscillator is described in this paper. It is found that the amplitude equation is independent of the capacitor ratio and high-frequency components introduced by the sampling process are about 50 percent lower than those of a parallel SC oscillator. -
B. J. Hosticka, R. W. Broderson and P. R. Gray, IEEE J. of SC, SC-12(1977), 600.[2]J. T. Caves, M. A. Copeland, C. F. Rahim and S. D. Rosenbaum, IEEE J. of SC, SC-12(1977),592.[3]E. A. Vittoz, IEEE J. of SC, SC-14(1979), 622.[4]B. J. White, G. M. Jacobs and G. F. Landburg, IEEE J. of SC, SC-14(1979), 991.[5]K. Martin and A. Sedra, IEEE Trans. on CAS, CAS-28(1981), 576.[6]K. Martin, IEEE J. of SC, SC-16(1981), 412.[7]T. Enomoto, T. Ishihara and Masa-Aki Yasumoto, Electronics Letters, 18(1982), 194.[9]W. D. Stanley著,常迵译,数字信号处理,科学出版社,1979年. -
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