New CFOA-based sinusoidal oscillators retaining independent control of oscillation frequency even under the influence of parasitic impedances

被引：14

作者：

Bhaskar, D. R. ^{[2
]}

Gupta, S. S. ^{[3
]}

Senani, R. ^{[1
]}

Singh, A. K. ^{[4
]}

机构：

[1] Netaji Subhas Inst Technol, Div Elect & Commun Engn, New Delhi 110078, India

[2] Jamia Millia Islamia, Fac Engn & Technol, Dept Elect & Commun Engn, New Delhi 110025, India

[3] Govt India, Minist Commerce & Ind, Dept Ind Policy & Promot, New Delhi 110011, India

[4] ITS Engn Coll, Dept Elect & Commun Engn, Greater Noida, UP, India

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2012年 / 73卷 / 01期

关键词：

Sinusoidal oscillators; Current feedback-operational-amplifiers; Analog circuit design; Current mode circuits; FEEDBACK-OPERATIONAL-AMPLIFIER; SINGLE; RESISTANCE; REALIZATION; DESIGN;

D O I：

10.1007/s10470-012-9896-6

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

There have been two efforts earlier on evolving CFOA-based fully-uncoupled oscillators i.e. circuits in which none of the resistors controlling the frequency of oscillation (FO) appear in the condition of oscillation and vice versa. However, a non-ideal analysis of the earlier known circuits reveals that due to the effect of the parasitic impedances of the CFOAs, the independent controllability of FO is completely destroyed. The main objective of this paper is to present two new fully-uncoupled oscillators in which the independent controllability of the FO remains intact even under the influence of the non-ideal parameters/parasitics of the CFOAs employed. The workability of the proposed circuits has been confirmed by experimental results using AD844-type CFOAs.

引用

页码：427 / 437

页数：11

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