An IR-UWB Angle-of-Arrival Sensor IC Using Auto-Toggled Time-to-Digital Converter

Geunhaeng Lee, Hyunmin Koh, Ui Suk Suh, Tae Wook Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This letter introduces an impulse radio-ultrawideband (IR-UWB) angle-of-arrival (AoA) sensor integrated circuit (IC) using an auto-toggled time-to-digital converter (TDC). The detectable range of the proposed AoA sensor can be extended by a factor of 2 by utilizing an auto-toggle operation that toggles the TDC's input signal according to the target's position. The analog front end (AFE) of the receivers is designed with a 3-5 GHz band and the system comprises two AFEs and one digital back end (DBE). The proposed IR-UWB AoA sensor IC was fabricated using a 65-nm CMOS process. The measurable angular range was ± 40°, and an angle error of ± 1.5° was measured.

Original languageEnglish
Article number8879650
Pages (from-to)749-752
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Issue number11
Publication statusPublished - 2019 Nov

Bibliographical note

Publisher Copyright:
© 2001-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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