79-GHz Digital Attenuator-Based Variable-Gain Vector-Sum Phase Shifter With High Linearity

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A 79-GHz variable-gain vector-sum phase shifter is presented, which consists of 5-bit digital attenuators in respective I and Q paths. It is designed to represent any vectors in the entire IQ plane by controlling the digital attenuators with low phase variations. Variable-gain function can be achieved intrinsically without additional variable-gain circuits. The proposed phase shifter can maintain low phase error at high input powers. The phase shifter provides a root mean square (RMS) phase error of 6.74 degrees with a phase resolution of 11.25 degrees. The gain dynamic range and resolution are 21 and 3 dB, respectively, with an RMS gain error of 1.89 dB.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2018-08
Language
English
Article Type
Article
Keywords

RECEIVER; CHIP

Citation

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.28, no.8, pp.693 - 695

ISSN
1531-1309
DOI
10.1109/LMWC.2018.2842688
URI
http://hdl.handle.net/10203/245629
Appears in Collection
EE-Journal Papers(저널논문)
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