Dual-Band Circular-Polarized Microstrip Antenna for Ultrawideband Positioning in Smartphones With Flexible Liquid Crystal Polymer Process

被引：22

作者：

Zhang, Yongjian ^{[1
]}

Li, Yue ^{[1
]}

Hu, Mingzhe ^{[1
]}

Wu, Pengfei ^{[2
]}

Wang, Hanyang ^{[3
]}

机构：

[1] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China

[2] Huawei Technol Co Ltd, Dept Wireless Technol, Consumer Business Grp, Shanghai 201206, Peoples R China

[3] Huawei Technol Ltd, Reading RG2 6AD, Berks, England

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2023年 / 71卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Antenna array; antenna feeding; circular polarization; microstrip antennas; multiple-band antennas; WAVE; INDOOR; PATCHES; ARRAY;

D O I：

10.1109/TAP.2023.3247130

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 article proposes a dual-band circular-polarized (DBCP) microstrip antenna using flexible liquid crystal polymer (LCP) manufacturing process for ON-smartphone ultrawideband (UWB) positioning application. To achieve dual-band circular polarization in a low profile, the proposed antenna is designed with a cross-slot-loaded patch with four L-shaped feeding probes and a sequential phase feeding network. A circle of capacitive via fence is loaded surrounding the patch for area miniaturization, which is adaptive for the limited space of flexible printed circuit (FPC) in smartphones. Based on the UWB positioning protocol, a three-element antenna array is constructed in a low profile of 0.015 lambda(0) with required isolation of 17 dB. Experimental results show the overlapped bandwidth of the efficiency and the axial ratio (AR) covering the demand bands of 6.30-6.80 and 7.75-8.10 GHz. With the properties of dual wideband operation, circular polarization, and ultralow profile, the proposed antenna exhibits feasible solutions for the UWB positioning application in space-limited smartphones.

引用

页码：3155 / 3163

页数：9

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