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A broadband LNA and mixer for digital video broadcasting applications using a 0.18‐μm CMOS process
Author(s) -
Qiang Tian,
Kim Eun Seong,
Wang Cong,
Park Min Chul,
Kim Nam Young
Publication year - 2015
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.29267
Subject(s) - cmos , noise figure , frequency mixer , electrical engineering , linearity , intermediate frequency , low noise amplifier , digital audio broadcasting , broadband , electronic engineering , tuner , chip , radio frequency , amplifier , engineering , telecommunications
ABSTRACT In this study, a broadband low noise amplifier (LNA)/mixer for digital video broadcasting‐satellite receiver tuner was fabricated by a 0.18‐µm complementary metal oxide semiconductor (CMOS) process. The proposed broadband LNA receives positive feedback and incorporates a single‐ended differential converter to mixer. Two attenuators are used to obtain good noise performance and high linearity. Moreover, the designed CMOS LNA/mixer achieved gain controls in 3‐dB steps, an input second‐order intercept of 1.37 dBm, and an input third‐order intercept of −3.6 dBm in high‐gain low‐frequency mode. The 6.4‐dB noise of LNA was achieved in the frequency range of 950–2150 MHz. The circuit consumes a total current of 25 mA at a supply voltage of 1.8 V and the chip area of the LNA and the mixer are 0.8 × 0.53 mm 2 and 0.8 × 0.6 mm 2 , respectively. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2092–2099, 2015