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Journal of Electromagnetic Waves and Applications Volume 32, 2018 - Issue 8
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Articles

A dual-polarized small base station antenna having a high Tx/Rx isolation characteristics for 900 MHz small-cell MIMO systems

Jung-Nam LeeMobile Transmission Research Department, Electronics and Telecommunications Research Institute, Daejeon, KoreaCorrespondence[email protected]
,
Myung Don KimMobile Transmission Research Department, Electronics and Telecommunications Research Institute, Daejeon, Korea
&
Tae Joong KimMobile Transmission Research Department, Electronics and Telecommunications Research Institute, Daejeon, Korea
Pages 1018-1028 | Received 10 Aug 2017, Accepted 28 Nov 2017, Published online: 12 Dec 2017
 
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Abstract

A dual-polarized base station (BS) antenna is proposed that has a spiral isolator, a T-shaped matching stub, and a metal cube. The antenna is composed of a metallic cube, micro-strip feed line board, metallic feeding cylinders, spiral isolator, isolator connecting pins, micro-strip patch, and T-shaped matching stubs. The measured frequency bandwidth is 898–970 MHz at ports-1 and 2. The measured isolation is 40 dB over the operating frequency band and the measured antenna peak gain is 7.5 dBi.

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