Voltage-mode multiphase sinusoidal oscillators using CBTAs
2012 35th International Conference on Telecommunications and Signal Processing, TSP 2012, Prague, Çek Cumhuriyeti, 3 - 04 Temmuz 2012, ss.421-425, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/tsp.2012.6256328
- Basıldığı Şehir: Prague
- Basıldığı Ülke: Çek Cumhuriyeti
- Sayfa Sayıları: ss.421-425
- Anahtar Kelimeler: Active networks, CBTA, Multiphase sinusoidal oscillator, Voltage-mode circuits
- Maltepe Üniversitesi Adresli: Evet
Özet
A voltage-mode multiphase sinusoidal oscillator (MSO) structure using current backward transconductance amplifier (CBTA) is presented. The oscillator can generate n voltage signals (n being even or odd) equally spaced in phase. n+1 CBTAs, n grounded capacitor and a grounded resistor are used for nth-state oscillator. The oscillation frequency can be independently controlled through transconductance (g m) of the CBTAs which are adjustable via bias currents. The effects caused by the non-ideality of the CBTA on the oscillation frequency and condition have been analyzed. The performance of the proposed circuit is demonstrated on a third-stage MSO by using PSPICE simulations based on the 0.25 μm TSMC level-7 CMOS technology parameters. © 2012 IEEE.