Wu, X., Zhang, Y., Mangraviti, G., ElKashlan, R., Peumans, D., & Wambacq, P. (2025). A 24-31GHz Compact Low-Power Complex Impedance Sensor for Beamforming Transmitters in 22nm FD-SOI. In J. Gu, & K. Okada (Eds.), 2025 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2025 (pp. 99-102). (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium). https://doi.org/10.1109/RFIC61188.2025.11082817

@inproceedings{0bfee044a48748219e45f874379b7f2f,
title = "A 24-31GHz Compact Low-Power Complex Impedance Sensor for Beamforming Transmitters in 22nm FD-SOI",
abstract = "We present a complex impedance sensor to measure the impedance variations at the output of a (phased-array) transmitter (TX) operating around 28 GHz. Based on complex voltage sensing of the output balun in a transmitter, the envelope detectors and injection-locked ring oscillators (ILRO) split the amplitude and phase sensing of voltages for computing the complex impedance. With a bandwidth spanning from 24 GHz to 31 GHz and an input power dynamic range of 7 dB, this circuit can sense reflection coefficients up to 0.74 with a maximum magnitude error of 0.14 and a maximum phase error of 12.8°. It consumes 8 mW of power and occupies only 0.0043",
author = "Xuepu Wu and Yang Zhang and Giovanni Mangraviti and Rana ElKashlan and Dries Peumans and Piet Wambacq",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.",
year = "2025",
doi = "10.1109/RFIC61188.2025.11082817",
language = "English",
isbn = "9798331514129",
series = "Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium",
pages = "99--102",
editor = "Jane Gu and Kenichi Okada",
booktitle = "2025 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2025",
}