Takafumi Ohishi1
1Advanced Technology Department, Research and Development Center, Canon Medical Systems Corporation, Kawasaki, Japan
1Advanced Technology Department, Research and Development Center, Canon Medical Systems Corporation, Kawasaki, Japan
The
appropriate band frequency for non-contact heart and respiration rate
monitoring is around 600 MHz. The wideband multi-element antenna is suitable
for non-contact monitoring.
Figure 4: a: Multi-element
antenna combined with two dipole antennas. b: Frequency characteristics of the
multi-element antenna. c: Frequency characteristics of the dipole antenna with
the resonant frequency of 600MHz.
Figure 5: S11
time responses of the multi-element antenna and the dipole antenna.
