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A 3-5-GHz, 385-540-ps CMOS true time delay element for ultra-wideband antenna arrays
Univ Politecn Catalunya BarcelonaTech UPC, Spain.
Univ Politecn Catalunya BarcelonaTech UPC, Spain.
Univ Politecn Catalunya BarcelonaTech UPC, Spain.
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
2022 (English)In: AEU - International Journal of Electronics and Communications, ISSN 1434-8411, E-ISSN 1618-0399, Vol. 149, article id 154175Article in journal (Refereed) Published
Abstract [en]

This paper proposes an all-pass filter-based true time delay (TTD) element covering a 3-5-GHz ultra-wideband (UWB) frequency. The proposed TTD element designed in a standard 0.18-mu m CMOS technology achieves a tunable delay range of 385-540 ps with 6-ps delay steps and maximum 11% absolute delay error over a 3-5-GHz frequency band. It exhibits an average 3.6-4.6-dB noise figure (NF) within the whole bandwidth. A four-channel beamforming receiver realized by the proposed TTD element is designed and examined in this paper, as well. With the maximum delay of 540 ps and 6-ps average delay resolution, a maximum steering angle of +/- 45 degrees with 5 degrees (18 steps) steering resolution is demonstrated for the beamforming receiver with 2-cm antenna spacing.

Place, publisher, year, edition, pages
ELSEVIER GMBH , 2022. Vol. 149, article id 154175
Keywords [en]
Ultra-wideband (UWB); True time delay (TTD); CMOS; Beamforming; Delay cell; Timed array receiver
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-186841DOI: 10.1016/j.aeue.2022.154175ISI: 000795764000001OAI: oai:DiVA.org:liu-186841DiVA, id: diva2:1681173
Available from: 2022-07-06 Created: 2022-07-06 Last updated: 2022-07-06

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Saberkari, Alireza
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Integrated Circuits and SystemsFaculty of Science & Engineering
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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NB
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  • Other locale
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Output format
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