Low RMS phase error 28 GHz 5-bit switch type phase shifter for 5G applications

J. H. Tsai, F. M. Lin, H. Xiao

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


A 28 GHz 5-bit switch-type phase shifter (STPS) using 0.18 μm CMOS technology is presented for 5G mobile communication applications. Utilising a process variation insensitive transmission line-based bridged T-type topology for 11.25°, 22.5°, 45°, 90°1-bit phase shifters and high-pass/low-pass network switched-path-type topology for 180°1-bit phase shifter, the 5-bit STPS achieves ultra-low root mean square (RMS) phase error of 1.7°and low RMS amplitude error of 0.59 dB at 28 GHz with intrinsic digital phase-control mechanism. The measured insertion loss of all 32 states is 15 ± 1.5 dB at 28 GHz with zero dc consumption.

Original languageEnglish
Article numberEL.2018.6383
Pages (from-to)1184-1185
Number of pages2
JournalElectronics Letters
Issue number20
Publication statusPublished - 2018 Oct 4

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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