A 10mm³ Syringe-Implantable Near-Field Radio System on Glass Substrate.

Digest of technical papers. IEEE International Solid-State Circuits Conference Pub Date : 2016-01-01 DOI:10.1109/ISSCC.2016.7418100

Yao Shi, Myungjoon Choi, Ziyun Li, Gyouho Kim, Zhiyoong Foo, Hun-Seok Kim, David Wentzloff, David Blaauw

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引用次数: 29

Abstract

We present a millimeter-scale near-field radio system for ultra-low-power (ULP) healthcare sensor nodes. It is specifically designed for `syringe implantation' which minimizes invasiveness of implantation. Designing a millimeter-scale wireless node for implanted healthcare is challenging because: 1) the antenna is constrained to the diameter of the syringe needle, which significantly constrains the link distance through RF. 2) The energy/power are strictly limited by the millimeter-scale form-factor where thin-film batteries can source only <;10μAh and sustain <;50μA peak current. Recent works [1-4] have demonstrated near-field transceivers for millimeter-scale implants. Passive backscatter radios consume low power but they are only operable at very short distances (e.g., 3.5cm) due to excessive path loss and self-jamming at the reader [1-2]. Although active radios can provide >10cm distance, their high power consumption (45mW [3]) and/or large antenna size (2.3cm×2.4cm [4]) make them impractical for implanted healthcare applications.

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