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DC‐20 GHz 5‐BIT CMOS digital step attenuator with low insertion loss and phase error
Author(s) -
Cho MoonKyu,
Baek Donghyun,
Kim JeongGeun
Publication year - 2013
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.27448
Subject(s) - attenuator (electronics) , insertion loss , return loss , electrical engineering , cmos , microwave , 4 bit , materials science , optical attenuator , attenuation , amplitude , physics , electronic engineering , optics , telecommunications , engineering , antenna (radio) , fiber optic sensor , optical fiber
This article presents a 5‐bit broadband digital step attenuator with low insertion loss and phase error using a standard 0.13 μm CMOS process for the phased array antenna.The maximum attenuation of 31 dB with the LSB of 1 dB is achieved at DC‐20 GHz. The measured insertion loss of the reference state is <11 dB and the input and output return losses are <−10 dB at DC‐20 GHz. The root mean square (RMS) phase and amplitude errors are <2.5° and <0.7 dB, respectively. The current consumption is near zero with 1.2 V supply. The chip size is 1.04 × 0.48 mm 2 including pads. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:762–764, 2013; View this article online at wileyonlinelibrary.com. DOI: 10.1002/mop.27448
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