Performance enhancement and signal integrity analysis of multiband MIMO antenna for handheld electronic devices. Issue 5 (28th February 2019)

• Record Type: Journal Article
• Authors: Subbaraj, Sangeetha; Sambandam, Padmathilagam; Kanagasabai, Malathi; Alsath, Mohammed Gulam Nabi; Palaniswamy, Sandeep Kumar; Kulandhaisamy, Indhumathi; Kingsly, Saffrine; Panneer Selvam, Yogeshwari; Thangarasu, Deepa
• Is Part Of: IET microwaves, antennas & propagation. Volume 13:Issue 5(2019)
• Page Start: 631
• Page End: 641
• Publication Date: 2019-02-28
• Subjects: UHF antennas -- antenna feeds -- monopole antennas -- antenna radiation patterns -- multifrequency antennas -- microstrip antennas; signal integrity analysis -- multiband MIMO antenna -- handheld electronic devices -- 8‐element MIMO antenna -- handheld devices -- radiating elements -- F‐shaped monopole -- S‐shaped monopoles -- inverted π‐shaped slot -- decoupling element -- LTE -- GSM -- UMTS -- DCS -- PCS -- IMT -- WLAN -- WiMAX -- Wi‐Fi -- C‐shaped strips -- L‐shaped monopoles -- protruded ground plane -- spatial diversity -- polarisation diversity -- envelope correlation coefficient -- apparent diversity gain -- frequency 400.0 MHz to 5800.0 MHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2018.5562
• Languages: English
• ISSNs: 1751-8725

Abstract

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.