کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6942321 | 1450230 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improving linearity in MOS varactor based VCOs by means of the output quiescent bias point
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
سخت افزارها و معماری
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چکیده انگلیسی
This paper presents a CMOS based LC tank VCO topology improving the tuning range linearity. The VCO tuning range is linearized with PMOS varactors which remain in the inversion region for an extended range of the control voltage. This is achieved with the design of the quiescent operating point in the VCO's output nodes with a value close to the voltage rails, letting the varactors to behave quasi linearly in the achievable VCO tuning range. The experimental results of a VCO in a CMOS 0.35 µm process show a linear tuning range improvement of 75% of the control voltage in the (1.43-1.55) GHz range, with a minimum VCO gain variation compared to similar architectures. The results show a phase noise improvement from â94 dBc/Hz to â124 dBc/Hz @600 kHz offset from the carrier with an overall reduced amplitude noise for the VCO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Integration, the VLSI Journal - Volume 55, September 2016, Pages 274-280
Journal: Integration, the VLSI Journal - Volume 55, September 2016, Pages 274-280
نویسندگان
Victor R. Gonzalez-Diaz, Luis A. Sanchez-Gaspariano, Carlos Muñiz-Montero, Jose J. Alvarado-Pulido,