期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：4
页码：042115
DOI：10.1088/1755-1315/170/4/042115
语种：English
出版社：IOP Publishing
摘要：A pair of loop antennas with metal frame for the LTE smartphone are proposed. The proposed antennas are placed on the top and bottom of the system boar, respectively. The substrate used for the circuit board is FR4 with relative permittivity 4.4 and loss tangent of 0.02.The volume of the circuit board is 85×160×0.8mm3, with each antenna occupying an area of 10×38mm2. The antennas are mainly composed of a capacitive feed loop combined with a metal frame. On both sides of the ground plate, rectangular ground are added to reduce the coupling and improve the isolation of the two antennas. The proposed antenna is fabricated and measured, the measured operating bands with S11/S22 lower -6 dB cover the LTE low band (698-960 MHz) and LTE middle band (1710-2690 MHz), meanwhile, the isolation is better than 10 dB at LTE low frequency bands and 17 dB at LTE middle frequency. The details of the proposed antenna will be discussed.
