Tunable Multi-Band Mobile Phone Antenna with a Metal Rim for LTE Applications

被引：0
|
作者：
Cheng, Ran [1 ]
Dong, Yuandan [1 ]
机构：
[1] Univ Elect Sci & Technol China UESTC, Chengdu, Peoples R China
来源：
2020 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY (ICMMT 2020 ONLINE) | 2020年
关键词：
D O I：
10.1109/ICMMT49418.2020.9386900
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 novel low-frequency tunable multi-band mobile phone antenna based on a variable capacitor is developed in this paper. The antenna consists of a loop and monopole structures as well as a controlling circuit for the varactor. It utilizes the metal rim of the phone for a maximized antenna aperture size and an enhanced performance. The antenna is developed on an FR-4 PCB board using a 50-Omega pigtail line for test. The measured results show that it achieves a -6 dB bandwidth covering all the LTE/WWAN bands from 700MHz to 2.7GHz. The low-frequency radiation efficiency is more than 30% (-5dB). And it varies from 45% to 77% for the 1.7GHz to 2.7GHz high band. It is featured by a tunable low-band and a fixed high frequency part.
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页数：3
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