Analysis and Design of a Robust, Low-Power, Inductively Coupled LSK Data Link

被引：10

作者：

Yousefi, Alireza ^{[1
,2
]}

Abidi, Asad A. ^{[1
]}

Markovic, Dejan ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Elect & Comp Engn Dept, Los Angeles, CA 90095 USA

[2] Syntiant Corp, Irvine, CA 92618 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2020年 / 55卷 / 09期

关键词：

Biomedical communication; biomedical implants; biomedical telemetry; brain/body-machine interface (BMI); impedance modulation; inductive coupling; inductive power/data transmission; internet of things (IoT); Load shift keying (LSK); low power; near field communication (NFC); neural recording; neuromodulation; radio-frequency identification (RFID); wireless power transmission (WPT); WIRELESS POWER; IDENTIFICATION; TRANSMISSION; RANGE; NOISE; VCO;

D O I：

10.1109/JSSC.2020.3005772

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-power half-duplex data link transmits data at up to 4 Mb/s over coupled inductors across distances of up to 5 cm. The inductors are part of two resonators which tune a free-running oscillator to one of their natural modes. This gives robustness to changes in coil distance and relative orientation. With load-shift keying (LSK) employed in the remote transponder, the link is modeled analytically to reveal some unexpected properties. A complete design guide aids selection of coil size for range, carrier frequency for data rate, and Q-switching to extend range. Owing to low power circuit design, the remote transponder consumes 0.075 pJ/b in transmit, 5 pJ/b in receive mode.

引用

页码：2583 / 2596

页数：14

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