Miniaturized 3-bit phase shifter for 60 GHz phased-array in 65 nm CMOS technology

• Main Authors: Meng, Fanyi, Ma, Kaixue, Yeo, Kiat Seng, Xu, Shanshan, Boon, Chirn Chye, Lim, Wei Meng
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
• Online Access: https://hdl.handle.net/10356/99450; http://hdl.handle.net/10220/17616; http://ieeexplore.ieee.org.ezlibproxy1.ntu.edu.sg/xpl/articleDetails.jsp?tp=&arnumber=6658940&queryText%3DMiniaturized+3-bit+Phase+Shifter+for+60+GHz+Phased-Array+in+65+nm+CMOS+Technology
• Institution: Nanyang Technological University

The paper presents a compact 3-bit 90° phase shifter for phased-array applications at the 60-GHz ISM band (IEEE 802.11ad standard). The designed phase shifter is based on reflective-type topology using the proposed reflective loads with binary-weighted digitally-controlled varactor arrays and the transformer-type directional coupler. The measured eight output states of the implemented phase shifter in 65-nm CMOS technology, exhibit phase-resolution of 11.25° with an RMS phase error of 5.2°. The insertion loss is 5.69±1.22 dB at 60-GHz and the return loss is better than 12 dB over 54-66 GHz. The chip demonstrates a compact size of only 0.034 mm2.