Abstract
In this paper presents a compact square ring patch antenna with miniaturized AMC structure at 5.8 GHz for WBAN applications. To minimize detuning, keeping its radiation efficiency high and acceptable gain while keeping the SAR levels low for safety is a challenging task. One of the critical issues in WBAN antenna design is the size of the antenna for portable devices, because the size affects the gain and bandwidth. The AMC configuration decreases the back radiation and the effect frequency detuning results from the high loss in the human body. Furthermore, the AMC also increases the front-to-back ratio (FBR) of 15.3 dB. The proposed antenna has dimensions of 15.27×15.27×2.2 mm3 and provides a 404 MHz impedance bandwidth, with a gain improvement of 8.69 dBi and a 93.7% reduction of the initial SAR value. For this reason, the antenna is suitable for WBAN application in various fields, particularly in medical technology.
Highlights
Wireless body area network (WBAN) has attracted greater attention to providing the necessary communication needed for applications such as network applications, health monitoring, military and personal navigation entertainment [1,2,3,4,5]
The design of the WBAN antenna faces the biggest challenge in using the particles needed to fully understand the characteristics of the antenna and the loss of propagation in the existence of the human body [6]
The impa ct of WBAN ra dia tion on the huma n body is cha ra cterized by a specific a bsorption ra te (SAR), which must be considered to avoid any effect on the human body, and the value must be a minimum [7]
Summary
Wireless body area network (WBAN) has attracted greater attention to providing the necessary communication needed for applications such as network applications, health monitoring, military and personal navigation entertainment [1,2,3,4,5]. The design of the WBAN antenna faces the biggest challenge in using the particles needed to fully understand the characteristics of the antenna and the loss of propagation in the existence of the human body [6]. For this reason, the importance of a high-efficiency antenna during body proximity becomes a necessity. Several types of antennas have been investigated such as a fully textile patch antenna and other structures of patch antennas [8,9,10,11,12,13], an inverted F antenna planar [14,15], and antennas rela t ed o n integrated waveguides to the substrate, metamaterials are presented [16]. The electromagnetic bandgap structure (EBG) is included in the design of the antenna, which can be used to provide a high level of isolation from the human body
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