@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, IQ vector modulator, Marchand balun, Phase shifter, SiGe, common-base, ultra-wideband",
author = "Zheng Liu and Karahan, {Emir Ali} and Kaushik Sengupta",
note = "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",
}