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Low-Profile Patch Antennas for Over-Body-Surface Communication at 2.45 GHz
Two low-profile patch antennas on small ground planes (0.25 λ), suitable for over the body surface communication at 2.45 GHz are presented. On-Body performance was investigated using FDTD simulations of S21 coupling of shorted microstrip patch antennas (S-MPA) and higher-order mode microstrip patch antennas (HM-MPA) placed on numerical tissue phantoms with characteristics of muscle tissue. The low-profile antenna coupling results are comparable to those achieved using a quarter wave monopole antenna on the same size of groundplane, mounted normal to the tissue surface, indicating that the low-profile antennas studied are promising for bodyworn antenna applications.
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