Low-Phase-Noise 54-GHz Transformer-Coupled Quadrature VCO and 76-/90-GHz VCOs in 65-nm CMOS
| Autor: | Mark W. Morgan, Yanli Fan, Tianzuo Xi, Daquan Huang, Ping Gui, Shita Guo |
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| Rok vydání: | 2016 |
| Předmět: |
Radiation
Materials science Transconductance 020208 electrical & electronic engineering Transistor Linearity dBc 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics Inductor law.invention Voltage-controlled oscillator CMOS law Phase noise 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 64:2091-2103 |
| ISSN: | 1557-9670 0018-9480 |
| Popis: | This paper presents new circuit topologies and design techniques for low-phase-noise (PN) complementary metal–oxide–semiconductor (CMOS) millimeter-wave quadrature voltage-controlled oscillator (QVCO) and VCOs. A transformer-coupled QVCO topology with extra phase shift is proposed to replace the coupling transistors, which eliminates coupling transistors’ noise, decouples the tradeoff between PN and phase error, and improves the PN performance. This technique is demonstrated in a millimeter-wave QVCO with a measured PN of −119.2 dBc/Hz at 10-MHz offset of a 56.2-GHz carrier and a tuning range of 9.1%. In addition, an inductive-divider-feedback technique is proposed in an $LC$ VCO design to improve the transconductance linearity, resulting in a larger signal swing and lower PN compared with the conventional $LC$ VCOs. The effectiveness of this approach is demonstrated in a 76- and a 90-GHz VCO design, both fabricated in a 65-nm CMOS process, with an FOM $_{{\mathrm {T}}}$ of 173.6 and 173.1 dBc/Hz, respectively. |
| Databáze: | OpenAIRE |
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