NDLI: A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques

Content Provider	IEEE Xplore Digital Library
Author	Myoung-Gyun Kim Hee-Woo An Yun-Mo Kang Ji-Young Lee Tae-Yeoul Yun
Copyright Year	1963
Abstract	This paper presents a low-voltage, low-power, low-noise, and ultra-wideband (UWB) mixer using bulk-injection and switched biasing techniques. The bulk-injection technique is implemented for a low supply voltage, thus resulting in low power consumption. This technique also allows for a flat conversion gain over a wide range of frequencies covering the full UWB band; this is a result of the integration of the RF transconductance stage and the local oscillator switching stage into a single transistor that is able to eliminate parasitic effects. Moreover, since the bulk-injection transistors of the mixer are designed to operate in the subthreshold region, current dissipation is reduced. A switched biasing technique for the tail current source, in place of static biasing, is adopted to reduce noise. The effects of modulated input signals, such as AM and FM, are simulated and measured to demonstrate the robustness of the switched biasing technique. The proposed mixer offers a measured conversion gain from 7.6 to 9.9 dB, a noise figure from 11.7 to 13.9 dB, and input third-order intercept point from - 10 to - 15.5 dBm, over 2.4 to 11.9 GHz, while consuming only 0.88 mW from a 0.8-V supply voltage. The chip size including the test pads is 0.62×0.58 mm² using a 0.18-μm RF CMOS process.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	2486
Ending Page	2493
Page Count	8
File Size	1863892
File Format	PDF
ISSN	00189480
Volume Number	60
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mixers Transistors Radio frequency Noise Noise measurement Switches Switching circuits ultra-wideband (UWB) AM bulk injection CMOS FM mixer sub-threshold switched biasing
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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