ON THE DESIGN OF VOLTAGE-CONTROLLED SINUSOIDAL OSCILLATORS USING OTAS

被引：91

作者：

RODRIGUEZVAZQUEZ, A ^{[1
]}

LINARES-BARRANCO, B ^{[1
]}

HUERTAS, JL ^{[1
]}

SANCHEZSINENCIO, E ^{[1
]}

机构：

[1] TEXAS A&M UNIV SYST, DEPT ELECT ENGN, COLLEGE STN, TX 77843 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS | 1990年 / 37卷 / 02期

关键词：

D O I：

10.1109/31.45712

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：

A unified systematic approach to the design of voltage-controlled oscillators using only operational transconductance amplifiers (OTA's) and capacitors is discussed in this paper. Two classical oscillator models, i.e., quadrature and bandpass-based, are employed to generate several oscillator structures. They are very appropriate for silicon monolithic implementations. The resulting oscillation frequencies are proportional to the transconductance of the OTA and this makes the reported structures well-suited for building voltage controlled oscillators (VCO's). Amplitude stabilization circuits using both automatic gain control (AGC) mechanisms and limitation schemes are presented which are compatible with the transconductance amplifier capacitor oscillator (TACO). Experimental results from bipolar breadboard and CMOS IC prototypes are included showing good potential of OTA-based oscillators for high frequency VCO operation. © 1990 IEEE

引用

页码：198 / 211

页数：14

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