Abstract
The impedance matching is the key to determine the communication quality in wireless communication field of magnetic resonance coupling human body communication. The human body impedance easily affects the resonant frequency between the communication coils, resulting in serious signal attenuation. This paper proposes an impedance matching method based on dual adjustable capacitors: series resistors are used to adjust the coil bandwidth, while dual adjustable capacitors are used to tune the resonant frequency to the preset resonant frequency and achieve conjugate matching. Using a vector network analyzer to experiment with five volunteers for dual-arm magnetic resonance coupling communication. The experimental results show that the path loss result obtained by applying adjustable impedance matching is 10.88dB lower than that of the single capacitor matching and 7.42dB lower than that of the dual capacitor matching when the distance is 60cm at 13.56MHz. This method solves the issue of impedance mismatch due to the parasitic capacitance of the human body, which provides an effective method for transmission of magnetic resonance coupling human body communication.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
