This communication presents a compact wide band wearable MIMO antenna with very low mutual coupling (VLMC). The proposed antenna is composed of Jeans material. Two “I” shaped stubs are connected in series and are employed on the ground plane between the two patches separated by 0.048 λ to increase isolation characteristics of the antenna‐port. The antenna covers frequency spectrum from 1.83 GHz to 8 GHz (about 125.5%) where the minimum port isolation of about 22 dB at 2.4 GHz and maximum of about 53 dB at 5.92 GHz are obtained. The envelope correlation coefficient (ECC) of the MIMO antenna is obtained to be less than 0.01 with a higher diversity gain (DG > 9.6) throughout the whole operating band. The proposed MIMO antenna is cost effective and works over a wide frequency band of WLAN (2.4‐2.484 GHz/5.15‐5.35 GHz/5.72‐5.825 GHz), WiMAX (3.2‐3.85 GHz) and C‐band downlink‐uplink (3.7‐4.2 GHz/5.925‐6.425 GHz) applications. Simulation results are in well agreement with the measurement results.

In this communication, a compact two‐element ultra‐wideband (UWB) wearable multiple‐input multiple‐output (MIMO) antenna with high port isolation is presented. The proposed structure is composed of jeans material in which an ‘8’ shaped stub is placed on the middle position of the antenna backside and connected to the partially suppressed ground structure to improve the port isolation characteristics. The antenna covers the frequency range from 2.74 to 12.33 GHz (about 127.27%) with the port isolation of >26 dB over the entire UWB frequency range. The envelope correlation co‐efficient is found to be <0.025 with a high diversity gain (DG>9.9) throughout the complete operating band. The channel capacity loss for the proposed MIMO antenna is <0.13 bit/s/Hz. The imprinted optimised UWB MIMO antenna covers the area size of 55 × 35 mm2. The performances of the proposed antenna by the simulation and experimentation equally designated it a blameless candidate for the UWB applications.

An investigation to enhance the decoupling between the elements of a compact wide band multiple-input multiple-output (MIMO) antenna is presented in this communication. A microstrip neutralization line (NL) is designed on the top of antenna surface to enhance the port isolation. The geometry is embedded on a jeans material to be apposite for the on-body wearable applications. The antenna covers the frequency spectra from 3.14 to 9.73 GHz (around 102.4%) and fulfills the bandwidth requirements of WiMAX (3.2-3.8 GHz), GHz), C band downlink-uplink (3.7-4.2/5.9-6.425 GHz), downlink defense (7.2-7.7 GHz), and ITU (8-8.5 GHz) bands. The port isolation is found to be more than 32 dB over the whole application bands. The antenna is appraised in a rich scattering environment with very minimal envelope correlation coefficient (ECC < 0.12) and great amount of diversity gain (DG > 9.8). The proposed MIMO antenna system is able to achieve the channel capacity loss (CCL) of less than 0.2 BPS/Hz throughout the whole operating band. The proposed structure is etched on an area of 30 × 50 mm 2 . The simulated and measured performances of the proposed antenna are in well-matched state.

This communication describes a simple compact wide band multiple input multiple output (MIMO) antenna for Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) applications. The proposed antenna is integrated with an electromagnetic band gap (EBG) structure which is used to reduce the mutual coupling between the ports. The structure is excited by a line feed mechanism and investigated experimentally. The antenna covers the frequency range from 2.01 to 3.92 GHz with the corresponding fractional bandwidth of 64.42%. It fulfills the bandwidth requirements of WLAN (2.35‐2.5 GHz) and WiMAX (3.2‐3.85 GHz) bands where minimum port isolation is obtained around 29 dB throughout the entire application band. The proposed MIMO antenna has very low envelope correlation co‐efficient (ECC < 0.01) and high diversity gain (DG > 9.8). It also has very low channel capacity loss (CCL) which is found to be less than 0.2 Bit/s/Hz. The simulation results are compared with the measurement outcomes and found a good agreement between them.

This letter presents a two‐element textile‐based multiple input multiple output (MIMO) antenna with switchable dual wide band characteristics. The antenna is integrated with two switches enabled hanging resonators and a partial ground plane with funnel‐shaped DGS. It covers the spectra from 3.11 to 5.15 GHz in one and 4.81 to 7.39 GHz in another switching condition. The antenna satisfies the WiMAX/C‐band downlink (3.2‐3.8/3.7‐4.2 GHz) and WLAN/C‐band uplink (5.15‐5.35/5.72‐5.825/5.925‐6.425 GHz) application bands. The resonator structures provide very high port isolation of >19.5 and >21 dB in the lower and upper band, respectively. The proposed antenna offers suitable values of diversity parameters which include envelope correlation coefficient (ECC < 0.18), diversity gain (DG > 9.9 dB), and channel capacity loss (CCL < 0.2 BPS/Hz). The simulated results are found to be in close agreement with the measured outcomes from the experiments. The proposed antenna proves to be promising for wearable MIMO applications.