Design of Novel Precise Quadrature Oscillators Employing ECCIIs with Electronic Control
Yükleniyor...
Dosyalar
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Suceava, Fac Electrical Eng
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this paper, an interesting design of precise quadrature oscillator employing electronically controllable current conveyors of the second generation (ECCII) is presented. The main purpose of this paper is to show advantages and features of direct electronic control of application by an adjustable current gain where help of signal flow graph approach was used to clearer and visual understanding of the design. The discussed circuit and its presented modification have several favorable features such as grounded capacitors, independent electronic adjusting of oscillation frequency and condition of oscillation by the current gain and easy automatic gain control circuit (AGC) implementation (non-ideal effects of tuning process on output amplitudes are suppressed). Oscillator was designed for frequency band of units of MHz and tested with two types of inertial AGCs. Theoretical presumptions were confirmed by laboratory experiments.
Açıklama
Anahtar Kelimeler
Direct electronic control, current gain adjusting, electronically controllable current conveyors, quadrature oscillators, signal flow graph approach, State-Variable Synthesis, Sinusoidal Oscillators, Current Conveyor, Filter
Kaynak
Advances in Electrical and Computer Engineering
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
13
Sayı
2