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A 5 dB NF 100 KHz 1/F corner and 35 dBm OIP3 down conversion mixer using dynamic current injection and derivative superposition method
Author(s) -
Jung WonJae,
Lim SeMi,
Lee JiHoon,
Nam KyuHyun,
Jang JongEun,
Park JunSeok
Publication year - 2016
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.29886
Subject(s) - flicker noise , noise figure , intermodulation , frequency mixer , noise (video) , electrical engineering , cmos , superposition principle , flicker , harmonic mixer , noise figure meter , gilbert cell , electronic engineering , engineering , radio frequency , distortion (music) , physics , computer science , amplifier , quantum mechanics , artificial intelligence , local oscillator , image (mathematics)
This letter presents the design and measurement of high OIP3, low flicker noise double‐balanced Gilbert cell down conversion mixer in CMOS process. The key features of proposed mixer are dynamic current injection and derivative superposition. Since the flicker noise (1/f noise) have a strongly affect mixer's noise figure (NF), a dynamic current injection is used to reduce the flicker noise. The derivative superposition method has an auxiliary common gate stage of radio‐frequency (RF) input stage to cancel each third order intermodulation distortion (IMD3) and can provide a high third order output intercept point (OIP3). The proposed down conversion mixer is fabricated in 0.18 μm CMOS technology. And this letter highlights the performances of the proposed mixer in terms of: flicker noise (i.e., noise figure: 5 dB at 100 kHz), third order output intercept point (i.e., OIP3, typically 35 dBm), and the conversion gain (i.e., typ. 17.3 dB) from −20 dBm RF input at 2.4 GHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1720–1723, 2016