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Ultra-Low-Voltage 20-GHz Frequency Dividers Using Transformer Feedback in 0.18-mu m CMOS Process

Authors Zheng, Hui
Luong, Howard C. View this author's profile
Issue Date 2008
Source IEEE journal of solid-state circuits , v. 43, (10), 2008, OCT, p. 2293-2302
Summary This paper presents the design and analysis of ultralow-voltage (ULV) high-frequency dividers using transformer feedback. Specifically, a differential-input differential-output injection-locked (IL) divider topology with transformer feedback and a wideband transformer-coupled (TC) divider with quadrature outputs are demonstrated, both of which can operate well at supply voltages as low as the device's threshold voltages. Fabricated in a standard 0.18-mu m CMOS process, the ULV-IL divider measures an input frequency range from 16.1. GHz to 20 GHz while consuming a total power from 2.75 mW to 4.35 mW at 0.5 V supply, and the TC-divider measures an input frequency range of 27.8\% from 15.1 GHz to 20 GHz with IQ sideband rejection of -31 dBc while consuming power from 11.4 mW to 13.6 mW at 0.6 V supply.
ISSN 0018-9200
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Language English
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