Open AccessRC oscillators based on high‐ Q frequency‐selecting network
Author(s) -
Li Yong An
Publication year - 2018
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
eISSN - 1751-8598
pISSN - 1751-858X
DOI - 10.1049/iet-cds.2017.0232
Subject(s) - vackář oscillator , voltage controlled oscillator , oscillation (cell signaling) , delay line oscillator , amplifier , rc oscillator , digitally controlled oscillator , physics , variable frequency oscillator , control theory (sociology) , bandwidth (computing) , topology (electrical circuits) , voltage , electrical engineering , engineering , computer science , telecommunications , quantum mechanics , control (management) , artificial intelligence , biology , genetics
In this study, a traditional voltage‐mode oscillator consisting of a high‐ Q band‐pass filter and a voltage amplifier is transformed into a current‐mode oscillator employing a trans‐conductance amplifier. Furthermore, a current‐mode quadrature oscillator with a high‐ Q band‐pass filter and second generation current‐controlled conveyors (CCCIIs) is presented. Since the loop of the oscillator has rich selectivity, the oscillator produces less distortion. Also, the 3 dB bandwidth, oscillation criterion, and oscillation frequency of the oscillator could independently, linearly, and electronically be tuned by the aid of adjusting bias currents of the CCCIIs. Finally, the validity of the designed circuit is verified by means of the computer simulation and the non‐ideal analysis is performed to explain the results of the simulation. The results show that the designed circuit is workable.