Low-Loss Highly Linear Integrated Passive Phase Shifters for 5G Front Ends on Bulk CMOS Academic Article uri icon


  • 1963-2012 IEEE. Two passive phase shifters (PSs) are proposed to minimize insertion loss (IL) in bulk CMOS technology for 28-GHz fifth generation integrated phased-array transceivers. The first PS is based on a true delay phase shift structure, where a modification is proposed to facilitate the use of larger switch size minimizing the IL in the bypass mode. The second PS is based on matched high-pass and low-pass sections to maximize the bandwidth of the phase shift. Two 3-bit passive PS prototypes, implemented in 40-nm bulk CMOS technology, are designed to be shared between the transmitter and receiver units. The first and second prototypes achieve low IL of 6 dB across 24-34- and 22-36-GHz frequency ranges with root-mean-square phase error less than 13 and 12.8, respectively. The two prototypes have input and IIP3 higher than 8.5 and 21 dBm, respectively.

published proceedings


author list (cited authors)

  • Elkholy, M., Shakib, S., Dunworth, J., Aparin, V., & Entesari, K.

citation count

  • 27

complete list of authors

  • Elkholy, Mohamed||Shakib, Sherif||Dunworth, Jeremy||Aparin, Vladimir||Entesari, Kamran

publication date

  • August 2018