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A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application
Journal of Electromagnetic Engineering and Science
This paper presents a wideband CMOS vector-sum phase shifter (VSPS) targeting the n260 band of 5G communication. A differential quadrature generator is implemented using a Marchand balun and two 90° coupled-line couplers to improve robustness to process and temperature variations. The quadrature vector signals are combined by a following vector modulator that adopts a double Gilbert-cell topology. The linearity and input-matching performance are enhanced at the expense of extra DC consumptiondoi:10.26866/jees.2022.1.r.54 fatcat:5sbkllafkfbgpe6sthh2vuxfdm