A 5-11 GHz 8-bit Precision Passive True-Time Delay in 65-nm CMOS Technology

Jeong Moon Song, Jung Dong Park

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In this paper, we present an 8-bit precision passive true-time delay (TTD) operating at 5-11 GHz in 65-nm CMOS technology. To achieve a precision time delay control, the 8-bit TTD employs a 4-bit time delay circuitry that utilizes two LC delay networks in parallel to reduce the effects of the nonideal lumped components and layout imbalance of a conventional TTD. To design an 8-bit TTD, a 4-bit TTD with conventional LC networks was also used for the 5th bit to the 8th bit (MSB) time-delay for coarse delay control. The implemented 8-bit TTD circuit achieved a minimum delay of 1.56 ps and a maximum delay of 400 ps, demonstrating the smallest loss per delay among the recently reported state-of-the-art silicon-based TTDs without dissipating any DC power and with a chip area of 2.76\times 1.01 mm2.

Original languageEnglish
Pages (from-to)18456-18462
Number of pages7
JournalIEEE Access
Volume10
DOIs
StatePublished - 2022

Keywords

  • CMOS
  • phase shifters
  • phased arrays
  • true-time delay

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