Design of Low-Power Electronically Controllable Dual-Mode Third-Order Quadrature Oscillator Using Single CDCTA-C

LEI Cai-hong

doi:10.3969/j.issn.0372-2112.2017.03.014

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Design of Low-Power Electronically Controllable Dual-Mode Third-Order Quadrature Oscillator Using Single CDCTA-C

更新时间：2025-07-16

- Design of Low-Power Electronically Controllable Dual-Mode Third-Order Quadrature Oscillator Using Single CDCTA-C
- Acta Electronica Sinica Vol. 45, Issue 3, Pages: 599-604(2017)
- 作者机构：
  
  1. 湖北理工学院机电工程学院,湖北,黄石,435003
  2. 湖北理工学院机电工程学院,湖北,黄石,435003
- 作者简介：
- 基金信息：
  
  Project Supported by Scientific Research Program of Education Department of Hubei Province (No.2014681)
- DOI：10.3969/j.issn.0372-2112.2017.03.014
  CLC： TN453
- Published Online：25 March 2017，
  
  Published：2017
- 稿件说明：
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LEI Cai-hong. Design of Low-Power Electronically Controllable Dual-Mode Third-Order Quadrature Oscillator Using Single CDCTA-C[J]. Acta Electronica Sinica, 2017, 45(3): 599-604.
DOI：

LEI Cai-hong. Design of Low-Power Electronically Controllable Dual-Mode Third-Order Quadrature Oscillator Using Single CDCTA-C[J]. Acta Electronica Sinica, 2017, 45(3): 599-604. DOI： 10.3969/j.issn.0372-2112.2017.03.014.

摘要

针对振荡器功耗大和振荡频率低的问题，提出了一种基于电流差分级联跨导放大器的三阶正交振荡电路.该电路仅使用一个电流差分级联跨导放大器和三个接地无源电容，可以同时产生两组等幅正交电流信号和一组等幅正交电压信号.电路结构简单，功耗低至1.8mW，最大灵敏度绝对值仅0.5，振荡频率可达10MHz数量级，而且振荡条件和震荡频率可相互独立地电控调谐.计算机模拟和流片芯片测试结果验证了理论分析的正确性.

Abstract

In order to solve problems of high power consumption and low oscillation frequency in oscillator

this work presents a third-order quadrature oscillator circuit employing CDCTA (Current Differencing Cascaded Transconductance Amplifiers).The proposed structure employing only one CDCTA and three grounded passive capacitors realizes four explicit quadrature current outputs and two quadrature voltage outputs simultaneously.Meanwhile

the circuit power consumption is only 1.8mW

the maximum sensitivities value of only 0.5 and the oscillation frequency of up 10MHz magnitude.Moreover

its oscillation condition and oscillation frequency can be tuned electronically and independently.Results from computer simulation and hardware experiment validated the theoretical analysis of the circuit.

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