A linear electronically tunable sinusoid oscillator

被引：2

作者：

Mathur, Koushick ^{[1
]}

Venkateswaran, Palaniandavar ^{[2
]}

Nandi, Rabindranath ^{[2
]}

机构：

[1] Burdwan Univ UIT, Dept Elect & Commun Engn, Burdwan 713104, W Bengal, India

[2] Jadavpur Univ, Dept Elect & Telecommun Engn, Kolkata 700032, India

来源：

IEICE ELECTRONICS EXPRESS | 2020年 / 17卷 / 22期

关键词：

CFA; SCNF; variable-Q filter; linear VCO; phase-noise; 3RD-ORDER QUADRATURE OSCILLATOR; VOLTAGE; RESISTORLESS; REALIZATION; VCO;

D O I：

10.1587/elex.17.20200344

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 linear electronically tunable sinusoid oscillator (LETSO) using a Current Feedback Amplifier (CFA) and three grounded capacitors, along with a pair of matched analog multiplier devices as the composite active building block (ABB) is presented. The design yields a high-Q filter response; thereby a sustained linear oscillatory response is implemented using the concept of Short-Circuit Natural Frequency (SCNF) at Q similar to infinity. The oscillation frequency (f(o) is linearly tunable by the multiplier control voltage (V). Effects of the CFA port-rolloff parameters and parasitic capacitors are negligible. The LETSO - response upto a range of f(o) similar to 12MHz with measured THD similar to 2% and linearity error (Delta similar to 3.6%) had been experimentally verified.

引用

页数：3

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