Reference-less wake-up receiver with noise suppression and injection-locked clock recovery

Shih En Chen, Jhih Syuan Lin, Hsin Fang Li, Kuang Wei Cheng

Research output: Contribution to journalArticle


A reference-less ultra-low-power wake-up receiver (WuRx) is proposed for the highly integrated Internet of things applications. The WuRx utilises a direct radio-frequency envelope detection technique with input synchronised switching to suppress 1/f noise and enhance the sensitivity. Moreover, injection-locked clock and data recovery circuitry is used to perform on-chip clock generation. A prototype 2.4 GHz WuRx is designed and implemented with 90 nm complementary metal-oxide-semiconductor technology. The chip area is 1.0 × 0.95 mm2. The measurement results show that the WuRx consumes 25 μW and achieves a sensitivity of −51.5 dBm for 200 kbps data rate.

Original languageEnglish
Pages (from-to)168-175
Number of pages8
JournalIET Circuits, Devices and Systems
Issue number2
Publication statusPublished - 2020 Mar 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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