Coupled-fed Printed PIFA for Internal Eight-Band LTE/GSM/UMTS Mobile Phone

• 作 者: CHEN Zhi BAN Yongling YING Lijun CHEN Jinhua
• 机 构: National Key Laboratory of Science and Technology on Communication, University of Electronic Science
• 出 处: Chinese Journal of Electronics
• 发表日期: 2014年01期
• 关键词: strip antenna folded resonant covering dimensions printed wideband matching band

A coupled-fed printed PIFA(Planar Inverted-F antenna) for eight-band operation covering the LTE700/2300/2500 and GSM850/900/1800/1900/UMTS2100 bands in the mobile phone is presented.The proposed antenna comprises a driven T-monopole and two coupled folded-strips. The folded strip which is coplaner with the T-monopole is called strip 1 and the folded-strip on the back of the system circuit board is called strip 2. The strip 1 is short-circuited to the system ground through an inductance and the Strip 2 is short-circuited to the system ground plane of the mobile phone directly. The driven T-monopole and the strip 1 contribute a wide band for the antenna’s upper band(1710–2690MHz), whereas the strip 2 generates a resonant mode for the antenna’s lower band(698–960MHz). The antenna’s two wide operating bands are achieved and controlled by tuning the width of the T-monopole, the gap g3 between the strip 1and the T-monopole, and the dimensions of the strip 2 on the back of the system circuit board. Details of the proposed antenna are described, and the obtained results are presented and discussed.

A coupled-fed printed PIFA (Planar Inverted-F antenna) for eight-band operation covering the LTE700 / 2300/2500 and GSM850 / 900/1800/1900 / UMTS2100 bands in the mobile phone is presented. -monopole and two coupled folded-strips. The folded strip which is coplaner with the T-monopole is called strip 1 and the folded-strip on the back of the system circuit board is called strip 2. The strip 1 is short-circuited to The system ground through an inductance and the Strip 2 is short-circuited to the system ground plane of the mobile phone directly. The driven T-monopole and the strip 1 contributes a wide band for the antenna’s upper band (1710-2690 MHz), while the strip the strip 2 generates a resonant mode for the antenna’s lower band (698-960 MHz). The antenna’s two wide operating bands are achieved and controlled by tuning the width of the T-monopole, the gap g3 between the strip 1 and the T-monopole, and the dimensions of the strip 2 on the back of the system circ Details of the proposed antenna are described, and the obtained results are presented and discussed.