A Wideband Compact 5-Bit Phase Shifter With Low Loss and RMS Errors for 5G Applications

This letter presents a differential 5-bit switch-type phase shifter (PS) that is based on a 65-nm CMOS process. This PS uses a new differential PS unit, which includes a high-pass state and a low-pass state. The strengths of this PS unit include low-phase error and low-amplitude error between two st...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 31; no. 10; pp. 1134 - 1137
Main Authors Lin, Yen-Heng, Tsai, Zuo-Min
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2021
Subjects
5G mobile communication
<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">Ka -band
CMOS
Inductors
monolithic microwave integrated circuit (MMIC)
Phase shifters
phase shifters (PSs)
phased-array
Switches
Topology
Transistors
Wideband
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ISSN1531-1309
1558-1764
DOI10.1109/LMWC.2021.3107008

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Summary:This letter presents a differential 5-bit switch-type phase shifter (PS) that is based on a 65-nm CMOS process. This PS uses a new differential PS unit, which includes a high-pass state and a low-pass state. The strengths of this PS unit include low-phase error and low-amplitude error between two states, which can effectively improve the performance of the entire 5-bit PS. The fabricated 5-bit PS has a low average insertion loss of <8.0 dB, low root mean square (rms) phase error of <5.9°, and low rms amplitude error of <0.22 dB in 35-41.9 GHz. It also has a compact size of 0.125 mm 2 .
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2021.3107008