Open AccessX‐band 8 × 8 phased‐array 4‐channel FMCW receiver in 65 nm CMOS technology
Author(s) -
Han SeonHo,
Kim KiSu,
Koo BonTae
Publication year - 2022
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12413
Subject(s) - phased array , phase shift module , active electronically scanned array , cmos , phased array optics , electronic engineering , beamforming , channel (broadcasting) , radar , monopulse radar , electrical engineering , engineering , continuous wave radar , telecommunications , antenna (radio) , radar imaging , insertion loss
Optimized two radar RFICs for an X‐band 8 × 8 phased‐array 4‐channel frequency‐modulated continuous‐wave receiver is proposed using 65‐nm CMOS technology and the beam steering operation of the receiver module is demonstrated. The 8 × 8 phased‐array receiver module is constructed using 16 2 × 2 phased‐array receivers and a 4‐channel receiver for implementation of monopulse radar. The array size is scalable with the proposed two chips solution. The 2 × 2 phased‐array receiver has novel vector‐sum phase‐shifter with 7‐bit resolution in low supply voltage. The measured result of the phase shifter shows 7‐bit phase states with a 0.37° RMS phase error and a 2.17 dB gain error over 360° sweep.