CMOS passive wake-up circuit for sensor network applications
✍ Scribed by Hyungchul Kim; Hanjin Cho; Yao Xi; Minsu Kim; Sungwook Kwon; Joonhyung Lim; Youngoo Yang
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 310 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A passive wake‐up circuit with high‐voltage sensitivity using standard CMOS technology has been designed and implemented.Voltage multipliers and inverter chain optimized for high‐voltage sensitivity have been proposed. A radio identification scheme to make peer‐to‐peer communication has also been proposed. The wake‐up circuit converts small‐RF input signals into a DC signal to trigger the interrupt. A duty cycle scheduling is adopted for an advanced power control. Using an RF input signal, whose center frequency is 870 MHz and input power is −29.3 dBm, we achieved an output voltage of 0.7 V, enough to trigger on the output. The fully integrated CMOS IC is fabricated using a 0.18‐μm standard CMOS process. The chip area is as small as 230 × 190 μm^2^. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 597–600, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24982