| Citation: |
Cao Shengguo, Han Kefeng, Tan Xi, Yan Na, Min Hao. A 1.0 V differential VCO in 0.13 μm CMOS technology[J]. Journal of Semiconductors, 2011, 32(2): 025010. doi: 10.1088/1674-4926/32/2/025010
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Cao S G, Han K F, Tan X, Yan N, Min H. A 1.0 V differential VCO in 0.13 μm CMOS technology[J]. J. Semicond., 2011, 32(2): 025010. doi: 10.1088/1674-4926/32/2/025010.
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Abstract
A differential complementary LC voltage controlled oscillator (VCO) with high Q on-chip inductor is presented. The parallel resonator of the VCO consists of inversion-mode MOS (I-MOS) capacitors and an on-chip inductor. The resonator Q factor is mainly limited by the on-chip inductor. It is optimized by designing a single turn inductor that has a simulated Q factor of about 35 at 6 GHz. The proposed VCO is implemented in the SMIC 0.13 μm 1P8M MMRF CMOS process, and the chip area is 1.0 × 0.8 mm2. The free-running frequency is from 5.73 to 6.35 GHz. When oscillating at 6.35 GHz, the current consumption is 2.55 mA from a supply voltage of 1.0 V and the measured phase noise at 1 MHz offset is --120.14 dBc/Hz. The figure of merit of the proposed VCO is --192.13 dBc/Hz. -
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