TY - GEN
T1 - A DC-to-18 GHz 6-bit CMOS Digital Step Attenuator with Low Phase Error and Compact Size
AU - Liu, Jianbin
AU - Yang, Tao
AU - Chi, Pei Ling
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this paper, a DC-to-18 GHz low phase error 6-bit digitally controlled attenuator fabricated in CMOS 55nm process is proposed. The proposed attenuator utilizes a phase-compensated structure to minimize the phase difference between the reference state and the attenuation state, resulting in a low root mean square (RMS) phase error. Additionally, the cascading method of the attenuation units is optimized to ensure accurate attenuation across a wide range. Experimental measurements demonstrate that the designed digital attenuator achieves a maximum RMS phase error of less than 4° within the operating frequency band. It offers an attenuation range of 31.5 dB with a step size of 0.5 dB. Remarkably, the core area, excluding the pad, occupies a small area of 0.015
AB - In this paper, a DC-to-18 GHz low phase error 6-bit digitally controlled attenuator fabricated in CMOS 55nm process is proposed. The proposed attenuator utilizes a phase-compensated structure to minimize the phase difference between the reference state and the attenuation state, resulting in a low root mean square (RMS) phase error. Additionally, the cascading method of the attenuation units is optimized to ensure accurate attenuation across a wide range. Experimental measurements demonstrate that the designed digital attenuator achieves a maximum RMS phase error of less than 4° within the operating frequency band. It offers an attenuation range of 31.5 dB with a step size of 0.5 dB. Remarkably, the core area, excluding the pad, occupies a small area of 0.015
KW - CMOS
KW - digital step attenuator
KW - phase compensated structure
KW - ultra-wide band (UWB)
UR - http://www.scopus.com/inward/record.url?scp=85182733238&partnerID=8YFLogxK
U2 - 10.1109/ISEMC58300.2023.10370127
DO - 10.1109/ISEMC58300.2023.10370127
M3 - Conference contribution
AN - SCOPUS:85182733238
T3 - IEEE International Symposium on Electromagnetic Compatibility
BT - 7th International Symposium on Electromagnetic Compatibility, ISEMC 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE International Symposium on Electromagnetic Compatibility, ISEMC 2023
Y2 - 20 October 2023 through 23 October 2023
ER -