A Compact Impedance Matching Layer for Dual-Band Implantable Medical Devices

被引：0

作者：

Pan, Yibo ^{[1
]}

Fu, Wenjie ^{[1
]}

Lu, Dun ^{[1
]}

Huang, Tongxing ^{[1
]}

Song, Yihang ^{[2
]}

Lu, Li ^{[2
]}

Yan, Yang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Terahertz Sci & Technol Key Lab Sichuan Prov, Chengdu 610054, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Comp Sci & Engn, Chengdu 610054, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Antennas; Gain; Skin; Antenna measurements; Dual band; Transmitting antennas; Reflection; Impedance matching layer (IML); implantable antenna; implantable medical devices (IMDs); transmission efficiency enhancement; ANTENNA; METASURFACE;

D O I：

10.1109/LAWP.2024.3424279

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：

This letter presents a novel compact impedance matching layer (IML) to improve the transmission efficiency of dual-band implantable medical devices (IMDs) operating in the wireless medical telemetry services (WMTS, 1.395 GHz to 1.4 GHz) and industrial scientific and medical (ISM, 2.4 GHz to 2.48 GHz) bands. This IML with a simple structure enables robust impedance matching at the skin-air interface and enhances the transmission efficiency in both bands. To verify the performance enhancement induced by the IML, we designed a dual-band implantable antenna and studied lateral/angular misalignment on the gain with and without the IML. Furthermore, the analysis of varying implant depths suggests the potential applicability of the IML for deep implant scenarios. Finally, the prototypes of the IML and implantable antenna are fabricated and then measured in minced pork to validate the simulation results. The inclusion of the IML increased transmission efficiency by approximately 3.7 dB at 1.4 GHz and 10.3 dB at 2.45 GHz.

引用

页码：3088 / 3092

页数：5

共 17 条

[1] Gain enhancement of implanted antenna using lens and parasitic ring [J].