Electronically Controllable Fully-Uncoupled Explicit Current-Mode Quadrature Oscillator Using VDTAs and Grounded Capacitors

• 作者: Data Ram Bhaskar Dinesh Prasad Mayank Srivastava
• 来源期刊: 电路与系统(英文)
• 学科: 工学
• 关键词: VDTA QUADRATURE OSCILLATOR CURRENT-MODE CIRCUITS
• 年，卷（期）: 2013,（2）
• 页码范围: 169-172
• 页数: 4页
• 分类号: TN7

摘要

An electronically controllable fully uncoupled explicit current-mode quadrature oscillator employing Voltage Differencing Transconductance Amplifiers (VDTAs) as active elements has been presented. The proposed configuration employs two VDTAs along with grounded capacitors and offers the following advantageous features 1) fully and electronically independent control of condition of oscillation (CO) and frequency of oscillation (FO);2) explicit current-mode quadrature oscillations;and 3) low active and passive sensitivities. The workability of proposed configuration has been demonstrated by PSPICE simulations with TSMC CMOS 0.18 μm process parameters.