Abstract
A compact, low-profile wearable antenna capable of operation within the 5.1–5.46 GHz and 5.7–5.85 GHz medical body-area network band is suggested to make the antenna better for wearable devices. The integrated metasurface (MSs) antenna consists of as few as array of three wan-shaped components, directly below the planar waveguide-fed monopole antenna. The measurement of the integrated antenna is 0.56λ0×0.56λ0×0.08λ0, all while achieving an average gain of 8.2 dBi in working frequency and a front-to-back ratio (FB) in excess of 19 dB. As demonstrated by in-depth examination, the antenna performs exceptionally well in withstanding the distortion of structure, far superior to planar monopole antenna. Additionally, the metasurface enables the specific absorption rate (SAR) low to 0.84 W/kg, which makes this type of antenna suited to application in different wearable devices.
Highlights
IntroductionIn order to design antennas suitable for wearable equipment, flexible materials are mainly used as substrate
Using the E8362B network analyzer shows that the measurement result at 5.2 GHz has the lowest return loss of −25 dB compared with the simulation result, and the operating bandwidth is almost identical. e measurement result at 5.8 GHz has wider operating bandwidth than the simulation result, which is most likely due to error within the manufacturing tolerances and measurement system. e gap d1 between the monopole and the MSs is insulated by a thin foam when measuring
Radiation is noticeably improved with MSs, and integrated antennas have strong directional radiation properties with a half power beamwidth (HPBW) of roughly 65° and 72° at 5.2 GHz, 60° and 70° at 5.8 GHz for E- and H-plan separately
Summary
In order to design antennas suitable for wearable equipment, flexible materials are mainly used as substrate. Flexible material technology is difficult to achieve, popularized, or expensive. Erefore, it is important to study how to use conventional substrate materials to design antennas that meet the performance of wearable devices and have a bendable profile Flexible material technology is difficult to achieve, popularized, or expensive. erefore, it is important to study how to use conventional substrate materials to design antennas that meet the performance of wearable devices and have a bendable profile
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