An RF-Powered DLL-Based 2.4-GHz Transmitter for Autonomous Wireless Sensor Nodes

Title

An RF-Powered DLL-Based 2.4-GHz Transmitter for Autonomous Wireless Sensor Nodes

 Author

Stoopman, M. (TU Delft Bio-Electronics) ORCID 0000-0002-1247-0590
Philips, Kathleen (TNO; Stichting IMEC Nederland)
Serdijn, W.A. (TU Delft Bio-Electronics) ORCID 0000-0003-4973-9677

 Date

2017

 Abstract

This paper presents the system and circuit design of a compact radio frequency (RF)-powered 2.4-GHz CMOS transmitter (TX) to be used for autonomous wireless sensor nodes (WSNs). The proposed TX utilizes the received dedicated RF signal for both energy harvesting as well as frequency synthesis. A TX RF carrier is derived from the received RF signal by means of a delay locked loop and XOR-based frequency multiplier. The 50-Ω load is subsequently driven by a tuned switching RF power amplifier (PA) with 25% duty cycle input for high global efficiency. The design is fabricated in 40-nm CMOS technology and occupies a die area of 0.16 mm2. Experimental results show a rectifier with 36.83% peak efficiency and power management circuit with 120-nA current consumption that enables a low start-up power of -18.4 dBm. The TX outputs a continuous 2.44-GHz RF signal at -2.57 dBm with 36.5% PA drain efficiency and 23.9% global efficiency from a 915-MHz RF input and supports ON-OFF keying modulation.

 Subject

Autonomous
power amplifier (PA)
radio frequency (RF) energy harvesting
RF-powered
sensitivity
transmitter (TX)
wireless sensor node (WSN)

 To reference this document use:

http://resolver.tudelft.nl/uuid:227f46e1-ba10-4dbb-8476-3a26a7bae62d

 DOI

https://doi.org/10.1109/TMTT.2017.2651817

 ISSN

0018-9480

 Source

IEEE Transactions on Microwave Theory and Techniques, 65 (7), 2399-2408

 Bibliographical note

Accepted Author Manuscript

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2017 M. Stoopman, Kathleen Philips, W.A. Serdijn
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PDF 37302141_mtt2017_stoopman.pdf 2.71 MB
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