A 3-5-GHz ultrawideband CMOS transmitter using switched LC VCO

A 3–5‐GHz CMOS ultrawideband (UWB) transmitter is implemented using 0.18‐μm CMOS technology.The transmitter is composed of switched LC VCO and digital pulse generator (DPG). The proposed DPG provides the short and tunable VCO switching pulse. The measured UWB center frequency range is 3.5–4.4 GHz wi...

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Bibliographic Details
Published in:Microwave and optical technology letters 2012-09, Vol.54 (9), p.2036-2039
Main Authors: Ha, Mincheol, Park, Byungjun, Park, Hyungchul, Eo, Yunseong
Format: Article
Language:English
Subjects:
digital pulse generator
fast turn on/off LC VCO
UWB transmitter
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Summary:A 3–5‐GHz CMOS ultrawideband (UWB) transmitter is implemented using 0.18‐μm CMOS technology.The transmitter is composed of switched LC VCO and digital pulse generator (DPG). The proposed DPG provides the short and tunable VCO switching pulse. The measured UWB center frequency range is 3.5–4.4 GHz with the trimmable capacitor bank of LC VCO, and the pulse duration is tunable from 1 to 3 ns by virtue of DPG. The measured energy efficiency per pulse is 5.8% and the power consumption is 0.22 mW at 10 Mbps without the buffer amplifier. The chip core size is 350 × 1000 μm2. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2036–2039, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27031
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.27031