10 GHz LC voltage-controlled oscillator in 0.25 μm CMOS

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作者：
Institute of RF- and OE-ICs, Southeast University, Nanjing 210096, China [1 ]
机构：
来源：
Pan Tao Ti Hsueh Pao | 2008年 / 3卷 / 484-489期
关键词：
CMOS technology - LC oscillator - Voltage controlled oscillator (VCO);
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摘要：
A monolithic 10 GHz LC voltage-controlled oscillator (VCO) is implemented in standard 0.25 μm CMOS technology. The VCO adopts an optimized symmetric circular inductor with center-tap, an accumulation-mode MOS (A-MOS) varactor in series with a passive metal-isolator-metal capacitor (MIM-CAP) and a tail current source with an LC filter to operate with high-frequency and low-noise resulting in -103.2 dBc/Hz at 1MHz offset from carrier frequency of 10.2 GHz and approximately 11.5% tuning range. With a 3.3 V supply voltage, the core circuit consumes 9.9 mW. The chip area is 0.67 mm × 0.58 mm.
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