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A 0.18 μm CMOS single‐balanced mixer with LO cancellation for MB‐OFDM UWB direct conversion receiver applications
Author(s) -
Park Bonghyuk,
Lee Seungsik,
Hong Songcheol,
Choi Sangsung
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22793
Subject(s) - cmos , feedthrough , electrical engineering , electronic engineering , signal (programming language) , orthogonal frequency division multiplexing , microwave , frequency mixer , direct conversion receiver , channel (broadcasting) , engineering , intermediate frequency , telecommunications , computer science , radio frequency , detector , programming language
This article presents an effective methodology for designing a CMOS single‐balanced down conversion mixer with LO cancellation for MB‐OFDM UWB direct‐conversion receiver. The most crucial drawback of single‐balanced mixer; LO feedthrough is overcome by employing BPF technique for multi‐channel LO signal. The proposed single‐balanced mixer is implemented with 0.18 μm CMOS technology and it operates from 3 to 5 GHz frequency range. The measurement result shows that LO signal amplitude is less than IF signal, the IIP3 is 1 dBm at 4‐GHz band, and the current consumption is 6 mA. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2555–2558, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22793
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