IEICE Electronics Express
Online ISSN : 1349-2543
Electronic UWB tunable true-time delay line for timed array antennas
Yang ChenWenyuan LiYuanxin Bao
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2018 Volume 15 Issue 3 Pages 20171139


This study presents a silicon-based ultra-wideband (UWB) true-time delay line for timed array antennas. The proposed circuit uses the novel active switches to mitigate performance deterioration from on-off switching. The proportional-to-absolute-temperature (PTAT) biasing circuit and scaling technique are adopted to improve the gain stability against the PVT variation at the different delay settings. The experimental prototype is fabricated in a 0.13 µm SiGe BiCMOS process, and exhibits a maximal relative delay of 35 ps with an average of 5 ps over a frequency range of 14–34 GHz. The chip occupies an area of 0.62 mm2, and the measured average input 1-dB compression point is 13 dBm.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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