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A V‐band CMOS sub‐harmonic mixer with integrated frequency doubler and 180° out‐of‐phase splitter
Author(s) -
Lee JenHow,
Chen ChiChen,
Lin YoSheng
Publication year - 2011
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.25888
Subject(s) - frequency multiplier , rfic , frequency mixer , electrical engineering , intermodulation , harmonic mixer , splitter , wilkinson power divider , intermediate frequency , cmos , microstrip , radio frequency , amplifier , return loss , microwave , optoelectronics , engineering , materials science , local oscillator , physics , frequency divider , telecommunications , optics , antenna (radio)
A V‐band sub‐harmonic mixer with an integrated frequency doubler and a 180° out‐of‐phase splitter using standard 0.13 μm CMOS technology is reported. The sub‐harmonic mixer comprises a current‐reused bleeding mixer, a baseband amplifier, a 180° (Wilkinson‐power‐divider‐based) out‐of‐phase splitter, and a frequency doubler. The mixer consumed 31.5 mW and achieved input return loss at RF port better than −10 dB for frequencies from 49.8 to 63 GHz. At IF of 20 MHz, the mixer achieved maximum conversion gain of 9.5 dB at RF of 53 GHz. The corresponding 3‐dB bandwidth (ω 3dB ) of RF is 9.6 GHz (48.4–58 GHz). The measured LO‐to‐RF and LO‐to‐IF isolation were better than 50 dB over the frequency band of interest. In addition, the measured input 1‐dB compression point ( P 1dB ) and input third‐order intermodulation point were −8 dBm and 2.2 dBm, respectively, at RF of 60 GHz. These results demonstrate the proposed mixer architecture is very promising for high‐performance V‐band RFIC applications. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:870–875, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25888