@inproceedings{17e71a4215c04809940c4c5add118f61,
title = "A 30-88 GHz Phase Shifter with Broadband 90° Hybrid- Marchand Balun Network and Common-base Buffer Achieving 1.34-3.1° RMS Phase Error in 90 nm SiGe",
abstract = "To enable a software-defined spectrally agile phased array operation across multiple bands from 30-100 GHz, we present a 30-88 GHz broadband IQ vector modulator phase shifter in 90 nm SiGe. This was enabled by 1) A single-end to differential quadrature phase generator consisting of a compact Marchand balun and 90°hybrid-based bandwidth extension network; 2) A common-base (CB) stage as the input buffer of the IQ VGA. Across the 58 GHz bandwidth, the maximum phase error of the 5-bit phase shifter is below half LSB resolution while achieving rms phase error of 1.34-3.1° and rms gain error of 0.19-0.48 dB. To the best of the authors' knowledge, this is the first phase shifter that covers from 5G FR2 to W band with a fractional bandwidth of 98.3% and demonstrates the best amplitude/phase error over one of the widest bandwidths.",
keywords = "90hybrid, common-base, IQ vector modulator, Marchand balun, Phase shifter, SiGe, ultra-wideband",
author = "Zheng Liu and Karahan, {Emir Ali} and Kaushik Sengupta",
note = "Funding Information: ACKNOWLEDGMENT The authors would like to acknowledge Defense Advanced Research Program Agency (DARPA) YFA program and Dr. Tim Hancock, Army Research Office and Dr. Joe Qiu for funding support. The authors also acknowledge GlobalFoundries for fabrication support, and all members of IMRL for technical discussions. Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 ; Conference date: 11-06-2023 Through 16-06-2023",
year = "2023",
doi = "10.1109/IMS37964.2023.10188072",
language = "English (US)",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1156--1159",
booktitle = "2023 IEEE/MTT-S International Microwave Symposium, IMS 2023",
address = "United States",
}