Publication Date:
2009-01-01
Description:
A new dual-input differential input active integrator using a current differencing buffered amplifier (CDBA) is proposed. A multiplier element is appropriately used in the circuit whose control voltage (Vc) tunes the integrator time constant (τ) electronically. The design of a voltage controlled quadrature oscillator (VCQO) based on the proposed integrator had been satisfactorily implemented. A new type of measurement for the tuning error of the oscillator based on the Nyquist plot is presented that shows an error of only 2% atfo≈1 MHz with Total Harmonic Distortion (THD) less than 3%.
Print ISSN:
0882-7516
Electronic ISSN:
1563-5031
Topics:
Electrical Engineering, Measurement and Control Technology
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