Abstract
Recently proposed is a newly Electrocardiogram (ECG) with separate powered electrode-pairs without common ground between two pairs instead of the traditional ECG with a reference electrode and the necessity of common ground creating wearing uncomfortable. Even the novel two-electrode-pair ECG can highly improve the wearing comfort, it must become wireless by overcoming wireless difference problem. This study introduces two analog transceivers of two amplitude modulation (AM) frequencies combined with two front-end amplifiers, two electrode-pairs, and one difference amplifier to implement two-electrode-pair wireless ECG. The experimental results demonstrate that the wireless difference is made possible, i.e., ECG can be constructed after wireless transmission. Two-electrode-pair wireless ECG can greatly improve wearing or measurement comfort without many wires around the body, even Lead I is clear with the acceptable signal-to-noise ratio and only clear QRS complex waves of Lead II and III are detectable for wearing comfort in the health applications.
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