Department of Microelectronics
Faculty of Electrical Engineering, Mathematics, and Computer Science

Javad Bathaei

Publications

  1. Biodegradable microwave cavity resonator
    M. J. Bathaei; S. Hashemizadeh; F. A. Cardoso; D. Nikolayev; C. M. Boutry;
    IEEE Microwave and Wireless Technology Letters,
    2025.

  2. Biodegradable Microwave Cavity Resonator
    Bathaei, Mohammad Javad; Hashemizadeh, Sina; Arroyo Cardoso, Filipe; Nikolayev, Denys; Boutry, Clementine M.;
    IEEE Microwave and Wireless Technology Letters,
    pp. 1-4, 2025. DOI: 10.1109/LMWT.2025.3588738
    Keywords: ... Impedance;Biomembranes;Sensors;Antennas;Wireless sensor networks;Resonant frequency;Resonance;Couplers;Wireless communication;Robot sensing systems;3-D printing;biodegradable materials;cavity resonator;laser cutting.

    Abstract: ... This letter presents the first fabrication and characterization of a biodegradable coaxial cavity resonator, focusing on the measurement of complex permittivity of encapsulation as well as |S11| and impedance parameters. The resonator components are 3D-printed from plant-based resin, coated with silver-coated copper flakes, and enclosed by a laser-cut zinc membrane. A monopole coupler antenna, inspired by the “Great Seal Bug,” is co-designed with the cavity to enable near-field coupling and achieve frequency-selective, near- 50 Ω impedance-matched wireless sensing. Numerical and experimental analysis of the gap between post and membrane (G-post), and between the coupler antenna and post, resulted in | S11| of −30.3 dB at 1.7 GHz, and a quality factor of 307, outperforming existing flat biodegradable resonators. A 40-MHz resonance shift is observed with a 20 μ m variation in G-post, highlighting the resonator’s high sensitivity to membrane position. This system enables battery-free wireless sensing with biodegradable antennas for biodiversity monitoring.

  3. Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review
    Liao, Zhengwei; Golparvar, Ata; Bathaei, Mohammad Javad; Cardoso, Filipe Arroyo; Boutry, Clementine M.;
    Advanced Science,
    pp. e09934, 2025. DOI: https://doi.org/10.1002/advs.202509934
    Keywords: ... bioelectronics, biomechanics, electrophysiology, soft and flexible electronics, tissue oxygenation.

    Abstract: ... Abstract Muscle plays a vital role in movement and metabolic regulation, establishing it as a cornerstone of overall health. Monitoring muscular parameters is critical for disease diagnosis, post-surgical recovery, and human–machine interface control. In recent decades, numerous technologies have emerged to monitor muscular biophysical and biochemical processes. The field has transitioned significantly from reliance on large, clinic-bound instrumentation to the development of miniaturized wearable and implantable systems capable of continuous real-time monitoring in everyday settings. This article presents a critical overview of recent advances, with a focus on material and device innovations in muscular monitoring. Starting with the fundamental characteristics of muscle tissue and the physiological origins of biosignals, the discussion subsequently shifts to recent developments in wearable and implantable bioelectronic systems tailored to monitor electrophysiological, biomechanical, and tissue oxygenation signals. Finally, current research challenges and outline emerging opportunities are highlighted in muscular monitoring. Owing to its interdisciplinary nature and growing societal demand for personalized healthcare, muscular monitoring is poised to catalyze transformative innovations in both clinical and consumer applications.

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