A Modified High Phase Accuracy SIC-QVCO Using a Complementary-Injection Technique

Shu You Lin; Hwann Kaeo Chiou

doi:10.1109/LMWC.2019.2895766

A Modified High Phase Accuracy SIC-QVCO Using a Complementary-Injection Technique

Shu You Lin, Hwann Kaeo Chiou

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This letter presents a complementary-injection-coupled technique to modify the conventional self-injection-coupled quadrature voltage-controlled oscillator (QVCO) topology. The proposed topology reduces the influence of dc offset problem at the source node of the coupling transistors that possibly makes the QVCO to fail and stop generating quadrature signals. Meanwhile, the modified coupling network provides an extra phase shift to resolve the bimodal oscillation. The QVCO is implemented in TSMC 0.18- μm CMOS technology. The measured phase noise is -111 dBc/Hz at 1-MHz offset, and the phase errors are from 0.29° to 1.39°. The figures of merit (FoM, FoM_Q) are -178.2 and -228.4 dBc/Hz, respectively. The chip area is 1.12 × 0.73

Original language	English
Article number	8642521
Pages (from-to)	222-224
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	29
Issue number	3
DOIs	https://doi.org/10.1109/LMWC.2019.2895766
State	Published - Mar 2019

Keywords

Complementary-injection-coupled
quadrature voltage-controlled oscillator (QVCO)
self-injection-coupled (SIC) QVCO

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10.1109/LMWC.2019.2895766

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title = "A Modified High Phase Accuracy SIC-QVCO Using a Complementary-Injection Technique",

abstract = "This letter presents a complementary-injection-coupled technique to modify the conventional self-injection-coupled quadrature voltage-controlled oscillator (QVCO) topology. The proposed topology reduces the influence of dc offset problem at the source node of the coupling transistors that possibly makes the QVCO to fail and stop generating quadrature signals. Meanwhile, the modified coupling network provides an extra phase shift to resolve the bimodal oscillation. The QVCO is implemented in TSMC 0.18- μm CMOS technology. The measured phase noise is -111 dBc/Hz at 1-MHz offset, and the phase errors are from 0.29° to 1.39°. The figures of merit (FoM, FoMQ) are -178.2 and -228.4 dBc/Hz, respectively. The chip area is 1.12 × 0.73",

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AB - This letter presents a complementary-injection-coupled technique to modify the conventional self-injection-coupled quadrature voltage-controlled oscillator (QVCO) topology. The proposed topology reduces the influence of dc offset problem at the source node of the coupling transistors that possibly makes the QVCO to fail and stop generating quadrature signals. Meanwhile, the modified coupling network provides an extra phase shift to resolve the bimodal oscillation. The QVCO is implemented in TSMC 0.18- μm CMOS technology. The measured phase noise is -111 dBc/Hz at 1-MHz offset, and the phase errors are from 0.29° to 1.39°. The figures of merit (FoM, FoMQ) are -178.2 and -228.4 dBc/Hz, respectively. The chip area is 1.12 × 0.73

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A Modified High Phase Accuracy SIC-QVCO Using a Complementary-Injection Technique

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Keywords

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