A 24-31GHz Compact Low-Power Complex Impedance Sensor for Beamforming Transmitters in 22nm FD-SOI

Xuepu Wu; Yang Zhang; Giovanni Mangraviti; Rana ElKashlan; Dries Peumans; Piet Wambacq

A 24-31GHz Compact Low-Power Complex Impedance Sensor for Beamforming Transmitters in 22nm FD-SOI

Xuepu Wu, Yang Zhang, Giovanni Mangraviti, Rana ElKashlan, Dries Peumans, Piet Wambacq

Onderzoeksoutput: Conference paper

Samenvatting

We present a complex impedance sensor to measure the impedance variations at the output of a (phased-array) transmitter (TX) operating around 28GHz. 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 24GHz to 31GHz and an input power dynamic range of 7dB, 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 8mW of power and occupies only 0.0043mm2.

Originele taal-2	English
Pagina's (van-tot)	1-4
Aantal pagina's	4
Tijdschrift	IEEE Radio Frequency Integrated Circuits Symposium
Status	Published - 2025

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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 28GHz. 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 24GHz to 31GHz and an input power dynamic range of 7dB, 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 8mW of power and occupies only 0.0043mm2.",

author = "Xuepu Wu and Yang Zhang and Giovanni Mangraviti and Rana ElKashlan and Dries Peumans and Piet Wambacq",

year = "2025",

language = "English",

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T1 - A 24-31GHz Compact Low-Power Complex Impedance Sensor for Beamforming Transmitters in 22nm FD-SOI

AU - Wu, Xuepu

AU - Zhang, Yang

AU - Mangraviti, Giovanni

AU - ElKashlan, Rana

AU - Peumans, Dries

AU - Wambacq, Piet

PY - 2025

Y1 - 2025

N2 - We present a complex impedance sensor to measure the impedance variations at the output of a (phased-array) transmitter (TX) operating around 28GHz. 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 24GHz to 31GHz and an input power dynamic range of 7dB, 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 8mW of power and occupies only 0.0043mm2.

AB - We present a complex impedance sensor to measure the impedance variations at the output of a (phased-array) transmitter (TX) operating around 28GHz. 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 24GHz to 31GHz and an input power dynamic range of 7dB, 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 8mW of power and occupies only 0.0043mm2.

M3 - Conference paper

SN - 1097-2633

SP - 1

EP - 4

JO - IEEE Radio Frequency Integrated Circuits Symposium

JF - IEEE Radio Frequency Integrated Circuits Symposium

ER -