A 65-nm CMOS fully integrated shock-wave antenna array with on-chip jitter and pulse-delay adjustment for millimeter-wave active imaging application

Nguyen Ngoc Mai Khanh, Masahiro Sasaki, Kunihiro Asada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents a 65-nm CMOS 8-antenna array transmitter operating in 117-130-GHz range for short range and portable millimeter-wave (mm-wave) active imaging applications. Each antenna element is a new on-chip antenna located on the top metal. By using onchip transformer, pulse output of each resistor-less mm-wave pulse generators (PG) are sent to each integrated antenna. To adjust pulse delays for the purpose of pulse beam-forming, a 7-bit digitally programmable delay circuit (DPDC) is added to each of PGs. Moreover, in order to dynamically adjust pulse delays among eight SW's outputs, we implemented onchip jitter and relative skew measuring circuit with 20-bit digital output to achieve cumulative distribution (CDF) and probability density (PDF) functions from which DPDC's input codes are decided to align eight antenna's output pulses. Two measured radiation peaks after relative skew alignment are obtained at (θ, φ) angles of (-56°; 0°) and (+56°; 0°). Measurement results shows that beam-forming angles of the fully integrated antenna array can be adjusted by digital input codes and by the on-chip skew adjustment circuit for active imaging applications.

Original languageEnglish
Pages (from-to)2554-2562
Number of pages9
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE94-A
Issue number12
DOIs
Publication statusPublished - 2011 Dec
Externally publishedYes

Fingerprint

Jitter
Antenna arrays
Millimeter waves
Shock waves
Antennas
Imaging techniques
Pulse transformers
Delay circuits
Pulse generators
Networks (circuits)
Resistors
Probability density function
Transmitters
Radiation
Metals

Keywords

  • Active imaging
  • Beam-forming
  • CMOS
  • Integrated circuit
  • Jitter measurement
  • Millimeter-wave
  • On-chip antenna array
  • Wide-band

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics
  • Signal Processing

Cite this

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abstract = "This paper presents a 65-nm CMOS 8-antenna array transmitter operating in 117-130-GHz range for short range and portable millimeter-wave (mm-wave) active imaging applications. Each antenna element is a new on-chip antenna located on the top metal. By using onchip transformer, pulse output of each resistor-less mm-wave pulse generators (PG) are sent to each integrated antenna. To adjust pulse delays for the purpose of pulse beam-forming, a 7-bit digitally programmable delay circuit (DPDC) is added to each of PGs. Moreover, in order to dynamically adjust pulse delays among eight SW's outputs, we implemented onchip jitter and relative skew measuring circuit with 20-bit digital output to achieve cumulative distribution (CDF) and probability density (PDF) functions from which DPDC's input codes are decided to align eight antenna's output pulses. Two measured radiation peaks after relative skew alignment are obtained at (θ, φ) angles of (-56°; 0°) and (+56°; 0°). Measurement results shows that beam-forming angles of the fully integrated antenna array can be adjusted by digital input codes and by the on-chip skew adjustment circuit for active imaging applications.",
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author = "{Mai Khanh}, {Nguyen Ngoc} and Masahiro Sasaki and Kunihiro Asada",
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AB - This paper presents a 65-nm CMOS 8-antenna array transmitter operating in 117-130-GHz range for short range and portable millimeter-wave (mm-wave) active imaging applications. Each antenna element is a new on-chip antenna located on the top metal. By using onchip transformer, pulse output of each resistor-less mm-wave pulse generators (PG) are sent to each integrated antenna. To adjust pulse delays for the purpose of pulse beam-forming, a 7-bit digitally programmable delay circuit (DPDC) is added to each of PGs. Moreover, in order to dynamically adjust pulse delays among eight SW's outputs, we implemented onchip jitter and relative skew measuring circuit with 20-bit digital output to achieve cumulative distribution (CDF) and probability density (PDF) functions from which DPDC's input codes are decided to align eight antenna's output pulses. Two measured radiation peaks after relative skew alignment are obtained at (θ, φ) angles of (-56°; 0°) and (+56°; 0°). Measurement results shows that beam-forming angles of the fully integrated antenna array can be adjusted by digital input codes and by the on-chip skew adjustment circuit for active imaging applications.

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