Hanyang University · Engineering
Professor Muhammad Zada's research lab specializes in the design and development of compact, efficient, and biocompatible antennas and energy harvesting systems for biomedical and wearable electronics. The lab focuses on implantable and wearable wireless communication devices, including miniaturized antennas for cardiac pacemakers, intraoral prosthetics, and smart textiles, with applications in e-healthcare and 5G-enabled health monitoring. Key research directions include metamaterial integration, frequency reconfigurability, and energy harvesting for battery-free wearable sensors.
Figures are computed from collected data and may differ slightly.
This communication presents a miniaturized triple band implantable antenna system for multiple biotelemetry applications, which operates at the industrial, scientific, and medical (ISM) band (902-928 MHz and 2400-2483.5 MHz) and the midfield band (1824-1980 MHz). These bands are intended for the function of data telemetry, wireless power transfer, and power saving. The recommended antenna system is comprised of two implantable devices, a capsule type for deep tissue implantation and a flat type
This communication presents a metamaterial (MTM)-loaded compact dual-band circularly polarized antenna system suitable for multiple bio-telemetric applications. The proposed antenna system operates in the industrial, scientific, and medical (ISM) bands with center frequencies: 915 MHz (902-928 MHz) and 2450 MHz (2400-2480 MHz). The integration of an MTM structure with epsilon-very-large property on the superstrate layer of the antenna produces significant gain enhancement and strong circular pol
Advancement in the technology of leadless cardiac pacemakers (LCPs) has led to ultracompact designs of implantable antennas. In this study, a small-sized antenna for integration with an LCP, which can be operated in the industrial, scientific, and medical (ISM) band of 2.4 GHz, is developed. The proposed antenna was constructed in a spiral shape to provide superior miniaturization, less sensitivity to body tissue variation, and low specific absorption rate (SAR) values, and avoid fabrication com
The integration of sub-6-GHz and millimeter-wave (mm-wave) bands has become an important issue for future fifth generation (5G) wireless communications owing to their large frequency ratios. This paper proposes a compact-size dual-function antenna operating at 3.5 GHz and the mm-wave band (28 GHz) for 5G mobile applications using a frequency reconfigurability technique. The proposed antenna comprises a microstrip patch linked with a meandered radiating structure through a radio frequency PIN dio
An intraoral tongue drive system (iTDS) is an assistive technology that enables paralyzed people to improve their lifestyle by allowing them to navigate their wheelchairs and access computers using tongue gestures. In this paper, we present two dual-band antennas: a meandered dipole antenna and a meandered planar inverted-F antenna (PIFA). We designed the proposed antennas to operate at industrial, scientific, and medical (ISM) bands 433 and 915 MHz to mitigate the external interference issue, w
Smart textiles—fabrics integrated with electronics—have the potential to revolutionize e-healthcare applications by enabling sensing, communication, and interaction with the environment. This article focuses on developing a battery-free smart-textile-based energy harvester for powering Internet of Things (IoT)-enabled wearable sensors, with a particular emphasis on its application in e-healthcare. The energy harvester is digitally embroidered and can be easily integrated into textile products, i
An efficient noninvasive system for simultaneous transmission of wireless power and data is vital for continuous human health monitoring. In this article, we present a self-tuned spiral-shaped antenna with dual-band characteristics operating at 920 MHz and 2.4 GHz for efficient wireless power transfer (WPT) and data telemetry, respectively. To avoid vision blockage, the proposed smart contact lens (SCL) dipole antenna comprises two symmetrical spiral arms with inner and outer diameters of 10 and
Remote patient monitoring can improve healthcare outcomes by enabling patients to receive continuous care at home. However, a reliable and convenient means of wireless communication and power transfer is needed to drive implantable biomedical devices. In this study, a complete wireless power transfer (WPT) system and data transmission for remote patient health monitoring is proposed, comprising an implantable receiver (Rx) antenna, an efficient rectifier integrated with the Rx, and a transmitter
Multichannel neural monitoring systems are crucial in the accurate diagnosis and treatment of epilepsy by continuously recording neural activity, allowing precise identification of epileptic zones. These systems demand an ultrawideband (UWB) antenna with wireless power reception capability to facilitate high-data-rate communication and battery-free operation for the development of compact and long-lasting neural devices. This articel introduces a compact (<inline-formula xmlns:mml="http://www.w3
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