Design of compact dual-element antenna array for LTE700 and WWAN applications

In this paper a multiband MIMO antenna suitable for long term evolution (LTE) and wireless wide area network (WWAN) application is presented. The MIMO antenna consists of two symmetric antenna elements, neutralization line and modified ground plane printed on a printed circuit board (PCB). The size of each radiators are 15 × 25 × 4 mm³. To maintain the compactness, radiating elements are folded at the edge of substrate. The combination of neutralization line and modified ground plane are used to reduce the mutual coupling at single and wide frequency band. The proposed antenna operates over a frequency range of 747 MHz–787 MHz and 1750 MHz–2570 MHz. It covers LTE700, GSM1800, GSM1900, UMTS, LTE2500, and Wi-Fi bands which is suitable for LTE and WWAN applications. The performances of the antenna in terms of s-parameters and radiation patterns are investigated. The measured result is found in close agreement with simulated one.