Dual-Band Transmitter for Wireless Power Transfer to Biomedical Implant Applications

被引：7
作者：
Le-Huu, Hoang [1 ]
Seo, Chulhun [1 ]
机构：
[1] Soongsil Univ, Dept Informat & Commun Convergence, Seoul 06978, South Korea
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
Dual band; Implants; Transmitters; Antennas; Reflection coefficient; Focusing; Current distribution; Biomedical implants; dual-band transmitter (DB-Tx); impedance matching network (IMN) wireless power transfer (WPT); TRANSFER SYSTEM; TRANSMISSION;
D O I：
10.1109/LAWP.2023.3246163
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：
letter presents a dual-band transmitter (DB-Tx) for wireless power transfer to biomedical implants. The DB-Tx operates at 1.7 GHz (LF-band) and 2.1 GHz (HF-band) to power implantable devices in deep and shallow implantation, respectively. A bipolar concentric loop (BCL) radiating plane is employed to obtain field-focusing characteristics at dual frequencies, and hence enhance the power transfer efficiency (PTE). Furthermore, a wideband implantable receiver (Rx) is implemented to verify DB-Tx's performance. Experimental results show that, by utilizing the DB-Tx, the transmission range can be extended three times in HF-band and 30% in LF-band, compared with the Tx operating at a single frequency band. The Rx can receive power with the PTE of -14.7 and -23 dB at 10 and 40 mm implantation depth, respectively.
引用
收藏
页码：1461 / 1465
页数：5
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