عنوان مقاله :
A CMOS Ring Oscillator VCO with Quadrature Outputs and High-Tuning Range
عنوان به زبان ديگر :
A CMOS Ring Oscillator VCO with Quadrature Outputs and High-Tuning Range
پديد آورندگان :
Parvizi، M نويسنده Faculty of Electrical & Computer Engineering, Tarbiat Modares University Tehran, Iran. parvizi, mahdi , Nabavi، A نويسنده Faculty of Electrical & Computer Engineering, Tarbiat Modares University Tehran, Iran. nabavi, A
اطلاعات موجودي :
دوفصلنامه سال 1388 شماره 0
كليدواژه :
VCO , CMOS ring oscillator , High tuning range , phase noise , Quadrature Output
چكيده لاتين :
This paper presents the design of a new four-stage ring oscillator with quadrature outputs using a 0.13pm CMOS 1P8M technology. The oscillator utilizes feed-forward technique and negative resistance to reduce the delay per stage and provides high frequencies. Employing single PMOS transistor to vary the load impedance allows reaching ultra-wide tuning range. The output frequency ranges from 0.8 to 11.3 GHz, which is equivalent to nearly 175% tuning range, while the circuit consumes only 1 OmW. Simulation results illustrate a phase noise of - 83dBc/Hz @ 1MHz offset from centre frequency. Also, the worst case phase variation due to mismatch is better than 0.4°over the above frequency range.
عنوان نشريه :
فناوري اطلاعات در طراحي مهندسي
عنوان نشريه :
فناوري اطلاعات در طراحي مهندسي
اطلاعات موجودي :
دوفصلنامه با شماره پیاپی 0 سال 1388
كلمات كليدي :
#تست#آزمون###امتحان
