Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2017 - zeszyt 3

VDIBA-based sinusoidal quadrature oscillator

10.15199/48.2017.03.55

nr katalogowy: 104341
10.15199/48.2017.03.55

An electronically tunable voltage-mode sinusoidal quadrature oscillator circuit, which is based on using the recently introduced active building block, namely voltage differencing inverting voltage buffered amplifier (VDIBA) has been presented. The presented quadrature oscillator uses two VDIBAs, one electronic grounded resistor, and two grounded passive capacitors, suitable for MOS-C realization. The circuit performs an single-element-controlled oscillator and provides the advantage features of independent electronic control of oscillation condition and oscillation frequency. The workability of the proposed circuit has been verified using PSPICE simulations based on VDIBA implemented in TSMC 0.25-m CMOS technology, and the simulated results demonstrate a sufficient agreement with the theoretical conclusions. Streszczenie. Zaprezentowano elektronicznie strojony sinusoidalny kwadraturowy generator wykorzystujący voltage differenting inverting buffered amplifier VDIBA.Generator wykorzystuje dwa układy VDIBA, jeden uziemiony rezystor i dwa uziemione kondensatory. Sinusoidalny kwadraturowy generator wykorzystujący układy VDIBA Keywords: Voltage Differencing Inverting Buffered Amplifier (VDIBA), quadrature oscillator, MOSFET-C realization, voltage-mode circuits. Słowa kluczowe: generator sinusoidalny, układy VDIBA Introduction Sinusoidal quadrature oscillators with a number of 90 phase-shifted outputs find numerous applications in communication, control and instrumentation systems. As a result, a number of voltage-mode quadrature oscillator circuits have been reported in the technical literature using different active building blocks such as second-generation current conveyors [1], differential voltage current conveyors [2], current differencing buffered amplifiers [3-6], and current follower transconductance amplifier [7]. However, all of them make use of at least three external passive components. Some of them [1-5, 7] st[...]

Bibliografia

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[4] W. Tangsrirat, T. Pukkalanun, W. Surakampontorn, CDBAbased universal biquad filter and quadrature oscillator, Active Passive Electron. Comp., vol.2008, Article ID 24717, 6 pages, doi : 10.1155/2008/247171, 2008.
[5] W. Tangsrirat, D. Prasertsom, T. Piyatat, W. Surakampontorn, Single-resistance-controlled quadrature oscillator using current differencing buffered amplifiers, Int. J. Electron., 95 (2008), No.11, 1119-1126.
[6] F. Khateb, W. Jaikla, D. Kubanek, N. Khatib, Electronically tunable voltage-output quadrature oscillator based on high performance CCCDBA, Analog Integr. Circ. Sig. Process., 74 (2013), 499-505.
[7] N. Herencsar, K. Vrba, J. Koton, A. Lahiri, Realisations of single-resistance-controlled quadrature oscillator using a generalized current follower transconductance amplifier and a unity-gain voltage-follower, Int. J. Electron., 97 (2010), No.8, 897-906.
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[9] R. Sotner, J. Jerabek, N. Herencsar, Voltage differencing buffered/inverted amplifiers and their applications for signal generation, Radioengineering, 22 (2013), No.2, 490-504.
[10] N. Herencsar, S. Minaei, J. Koton, E. Yuce, K. Vrba, New resistorless and electronically tunable realization of dual-output VM all-pass filter using VDIBA, Analog Integr. Circ. Signal Process., 74 (2013), No.1, 141-154.
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