Design of a 4.6 GHz high-performance quadrature CMOS VCO using transformer couple

被引：1
|
作者：
Wu Xiushan [1 ,2 ]
Wang Zhigong [1 ]
Li Zhiqun [1 ]
Li Qing [2 ]
机构：
[1] Southeast Univ, Inst RF & OE ICs, Nanjing 210096, Jiangsu, Peoples R China
[2] China Jiliang Univ, Coll Elect & Mech Engn, Hangzhou 310018, Peoples R China
来源：
JOURNAL OF SEMICONDUCTORS | 2009年 / 30卷 / 02期
基金：
中国国家自然科学基金;
关键词：
low-phase-noise; transformer; quadrature; voltage-controlled oscillator; couple;
D O I：
10.1088/1674-4926/30/2/025004
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A CMOS quadrature LC-tank voltage-controlled oscillator topology which uses a planar spiral transformer as coupling elements has been implemented in mixed-signal and RF 1P6M 0.18 mu m CMOS technology of SMIC. The measured phase noise is -125.7 dBc/Hz at an offset frequency of 1 MHz from the carrier of 4.6 GHz while the VCO core circuit draws only of 10 mW from a 1.8 V supply. The measured phase error is approximately 1.5(degrees) based on the time domain outputs and the output power is about -2 dBm. The VCO can cover the frequency range of 4.36-4.68 GHz. The tuning range is 320 MHz (7.0%) and the FOM is -189 dB.
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页数：4
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