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The 60 GHz band is a great prospect to meet the future demand for short-range indoor communication requiring wide bandwidth and high data rates. This paper presents the design of a 60 GHz printed Q-slot patch antenna for body-centric communication. The Q-slot has a slot gap of 0.2 mm and is etched on a 6.5 mm × 11 mm rectangular patch. The slotted patch is mounted on an FR-4 (Flame Retardant) substrate that is 1.6 mm thick and has a relative permittivity of 4.3. With a partial ground plane of length of 2.2 mm, the antenna’s overall dimension is 12.9 mm × 14 mm × 1.6 mm. Computer Simulation Technology (CST) microwave studio was used to design and simulate the antenna. In free space, the antenna is resonant at 60.06 GHz with an impedance bandwidth of 12.11 GHz. At 60 GHz, the antenna’s radiation efficiency is 82.15%, with a maximum gain of 8.62 dBi. For further analysis, parametric changes were made to observe the effect on return loss, radiation efficiency, and gain. The antenna was simulated on a three-layer human torso phantom for the on-body scenario. The antenna’s resonant frequency shifted slightly to the right at 2 mm distant from the phantom while maintaining a very wide impedance bandwidth. At this point, the antenna’s radiation efficiency dropped to 56.68% and gradually increased to 74.04% at 10 mm. The maximum gain remained largely unaffected, but some grated radiation patterns were observed.

This research analyzes and implements an innovative and tiny ultrawideband (UWB) antenna with band-notched features for body-centric communication. The shape of the designed antenna looks like a 'swan' with a slotted patch. Computer Simulation Technology (CST) is used to assess and investigate the performance of this antenna. With a band notch, this antenna can prevent interference from Wireless Local Area Network (WLAN) (5.15-5.825 GHz) and Worldwide Interoperability for Microwave Access (WiMAX) (5.25-5.85 GHz) systems. At first, the performance parameters like return loss response, gain, radiation patterns, and radiation efficiency of this UWB antenna are evaluated. After that, the human body effects on the antenna performance of the antenna are also examined to place the antenna at various distances away from 3-layers of phantom body model at different frequencies. All the on-body performance parameter results are compared and analyzed with free space performance parameter results. Lastly, by changing patch slot length and ground plane length, parametric studies were done for performance comparison. According to this research, it is noticed that the antenna is tiny and new. It shows good performance in body case as well. Hence, the antenna is very suitable for healthcare applications.