Wideband antenna for 4G MIMO applications

Abstract

A small, wideband, multiple‐input‐multiple‐output antenna is presented for 4G long term evolution (LTE) applications. The proposed antenna consists of a vertically polarized wideband stepped slot, as well as a horizontally polarized narrowband, uniform slot, integrated on a single substrate and fed by two ports. A prototype of the proposed antenna was designed, fabricated, and measured. The stepped slot antenna achieves an enhanced bandwidth of 122% from 0.77 GHz to 3.12 GHz, covering the 2G, 3G, and 4G bands. The narrowband slot achieves a bandwidth of 35% from 2.11 GHz to 3.01 GHz, covering the 4G band frequencies only. The isolation between the two slots is greater than 21 dB over the entire band of interest. The radiation pattern of the wideband slot in the horizontal plane is omnidirectional in nature while the narrowband slot exhibits a bidirectional radiation pattern in the horizontal plane. The proposed antenna is suitable for indoor, ceiling‐mount, microcell 4G LTE applications. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:601–604, 2017

Design of the Gradually Defect Patch Fractal Array Antenna for Unmanned Aerial Vehicle

“…The fourth-generation mobile communication frequency band is the TD-LTE standard 2.570-2.620 GHz frequency band. The fifth-generation mobile communication frequency bands are 3.300-3.400 GHz, 4.400-4.500 GHz, and 4.800-4.990 GHz [1][2][3][4][5]. The three main operating frequency bands of the international RFID system are 0.902-0.928 GHz, 2.400-2.4835 GHz, and 5.725-5.875…”