MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202641074867 A) filed by Ram Sandeep Duvvada on June 17, 2026, for Asymmetric Dual-Element Mimo Antenna For On-Body Wireless Communication Applications.
Inventors include D. Ram Sandeep; Chintada Vamsi; Bugatha Vardhan Datta; Abdul Ibrahim; and Arnipalli Sai Gautham Krishna.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: The present invention relates to an asymmetric dual-element Multiple-Input Multiple-Output (MIMO) antenna designed for on-body wireless communication applications, particularly in Wireless Body Area Networks (WBANs). The proposed antenna system addresses the challenges associated with operating in close proximity to the human body, such as signal attenuation, detuning, and reduced radiation efficiency caused by the lossy nature of biological tissues. The invention utilizes two radiating elements with intentionally different geometries, creating an asymmetric configuration that inherently minimizes mutual coupling and enhances isolation between antenna elements without requiring additional decoupling structures. The antenna incorporates slotted or comb-shaped patch designs that increase the effective current path, enabling miniaturization while supporting multiband operation across commonly used frequency bands such as 2.4 GHz and 5 GHz. A modified ground plane structure is employed to improve impedance matching and stabilize performance under on-body conditions. The independent feeding of each antenna element allows simultaneous transmission and reception of multiple data streams, thereby increasing channel capacity and communication reliability. The design achieves a low Envelope Correlation Coefficient (ECC) and high diversity gain, ensuring robust performance in dynamic environments affected by body movement and multipath propagation. Furthermore, the antenna is optimized to maintain a low Specific Absorption Rate (SAR), ensuring that electromagnetic radiation exposure remains within international safety limits. The radiation pattern is carefully shaped to direct energy away from the human body, enhancing efficiency while protecting the user. The compact and low-profile structure makes the antenna highly suitable for integration into wearable devices such as medical sensors, smart garments, and fitness trackers. Experimental and simulated results demonstrate stable impedance bandwidth, high radiation efficiency, and consistent performance across the intended operating bands
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