Performance enhancement and signal integrity analysis of multiband MIMO antenna for handheld electronic devices

Abstract

In this study, a multiband 8‐element MIMO antenna operating at LTE 800/2300/2500 MHz, GSM 850/900/1900 MHz, UMTS, DCS, PCS, IMT, WLAN 2400 MHz, WiMAX 3500 MHz and Wi‐Fi 5800 MHz is proposed for handheld devices. The proposed antenna comprises of radiating elements and novel decoupling structure to reduce the mutual coupling. To obtain multiple resonances, F‐shaped monopole, C‐shaped strips, L and S‐shaped monopoles are integrated to form the complete radiator. The protruded ground plane with inverted π‐shaped slot acts as the decoupling element. The eight elements are arranged in a certain fashion to achieve spatial and polarisation diversity. The impedance bandwidth achieved is 170, 1070, 400 and 700 MHz. The isolation is >20 dB in all the desired operating bands. The simulated peak gain and efficiency of the antenna at the four operating bands are 4.8/6.3/5.4/4.7 dBi and 75/90/80/83%, respectively. Furthermore, the envelope correlation coefficient, the apparent diversity gain and effective diversity gain are calculated and presented. The obtained measured and simulated results are in good correlation with each other.

A Novel Dual-Band Binary Branch Fractal Bionic Antenna for Mobile Terminals

“…At the same time, with the miniaturization of the terminal device, the radiator is usually bent and folded to increase the antenna electrical length to make the antenna operate at lower frequencies [12]. e bending and folding method of the antenna radiator structure is used to increase the electrical length of the antenna to achieve miniaturization of the antenna [13][14][15].…”

Eight-Element With H-Shaped Slot Mimo Antenna for 5g Applications

“…Table 2 shows a comparison of this antenna with some other MIMO antenna works. Compared with [6][7][8][9]12], the proposed antenna occupies less space with good isolation, high efficiency, and low ECC. Moreover, the proposed antenna designed around the handset frame cannot be easily interfered by various bottom components and is applicable to the currently popular full-screen mobile terminal.…”

“…The vertical metal patch increases the isolation to −12.5 dB on the corner of the terminal and −10 dB on the edge. In [8], a four-band eight-element MIMO antenna is presented. Four monopole antennas of different shapes, F, C, L, and S, are used as the radiation surface of each antenna element.…”