An orthogonal decoupling method of 2.4 GHz Wi-Fi MIMO antennas for smartwatch applications

被引：0

作者：

Lv, Rui ^{[2
]}

Zhao, Hui ^{[2
]}

Luo, Xuan ^{[2
]}

Zhao, Danna ^{[1
]}

机构：

[1] Shenyang University of Technology, Shenyang

[2] Shenzhen Institute of Information Technology, Shenzhen

来源：

IEICE Electronics Express | 2024年 / 21卷 / 18期

关键词：

common mode; decoupling design; differential mode; high Q-factor; unbroken housing;

D O I：

10.1587/elex.21.20240406

中图分类号：

学科分类号：

摘要：

This article investigates an orthogonal decoupling design for two multiple-input multiple-output (MIMO) antennas operating in the co-frequency 2.4 GHz Wi-Fi for unbroken housing smartwatch applications. This method is based on the cancellation of the common mode (CM) and differential mode (DM). Two high Q-factor lumped elements are applied to decouple, and they can change the common mode impedance to match the differential mode impedance. The measured results show that maximum in-band isolation of 65.5 dB and minimum band edge isolation of 33.9 dB at 2.4 GHz are attained. © 2024 The Institute of Electronics, Information and Communication Engineers.

引用

共 32 条

[1]

Xiao B., Et al., Design of small multiband full-screen smartwatch antenna for IoT applications, IEEE Internet Things J, 8, (2021)

[2]

Haghi M., Et al., Pervasive and personalized ambient parameters monitoring: a wearable, modular, and configurable watch, IEEE Access, 7, (2019)

[3]

Li G., Et al., A watch strap antenna for the applications of wearable systems, IEEE Access, 5, (2017)

[4]

Wu D., Cheung S.W., A cavity-backed annular slot antenna with high efficiency for smartwatches with metallic housing, IEEE Trans. Antennas Propag, 65, (2017)

[5]

Ullah H., Et al., Design and performance evaluation of SWB MIMO antenna with tri-notch functionality and mutual coupling suppression, IEICE Electron. Express, 20, (2023)

[6]

Chen Y.-S., Ku T.-Y., A low-profile wearable antenna using a miniature high impedance surface for smartwatch applications, IEEEAntennasWirelessPropag.Lett, 15, (2016)

[7]

Su S.-W., Hsieh Y.-T., Integrated metal-frame antenna for smartwatch wearable device, IEEE Trans. Antennas Propag, 63, (2015)

[8]

Chen W.-S., Et al., MIMO antenna with Wi-Fi and Blue-Tooth for smart watch applications, IEEE MTT-S 2015 International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), (2015)

[9]

Liao C.-T., Et al., Multiple integrated antennas for wearable fifth-generation communication and internet of things applications, IEEE Access, 9, (2021)

[10]

Wang B., Yan S., Design of smartwatch integrated antenna with polarization diversity, IEEE Access, 8, (2020)

← 1 2 3 4 →