A 275 GHz Active Vector-Sum Phase Shifter
- Authors
- Quan, C.; Heo, S.; Urteaga, M.; Kim, M.
- Issue Date
- 2월-2015
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- InP HBT; phase shifter; terahertz IC; variable-gain amplifier (VGA)
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.25, no.2, pp.127 - 129
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 25
- Number
- 2
- Start Page
- 127
- End Page
- 129
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94465
- DOI
- 10.1109/LMWC.2014.2382655
- ISSN
- 1531-1309
- Abstract
- Terahertz vector-sum phase shifters capable of 360 degrees phase control over the frequency range of 240 to 310 GHz are presented. Because the impedance mismatch of the variable-gain amplifiers employed in the phase shifter determines the flatness of the offset phases, a new broadband VGA design with its input and output impedances unaffected by dc bias is introduced. The measured results on the phase shifter fabricated using 0.25 mu m InP HBT technology show incremental phase shifts of 45 degrees with an average RMS offset phase error of 3.6 degrees and insertion loss of -1 to -13 dB for eight basis dc bias states.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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