US Patent No. 10,506,981

VITAL SIGN DETECTION SYSTEM WITH RANDOM BODY MOVEMENT CANCELLATION


Patent No. 10,506,981
Issue Date December 17, 2019
Title Vital Sign Detection System With Random Body Movement Cancellation
Inventorship Tzyy-Sheng Horng, Kaohsiung (TW)
Fu-Kang Wang, Kaohsiung (TW)
Mu-Cyun Tang, Kaohsiung (TW)
Assignee NATIONAL SUN YAT-SEN UNIVERSITY, Kaohsiung (TW)

Claim of US Patent No. 10,506,981

1. A vital sign detection system comprising:a radar device configured to output an output signal;
a nonreciprocal network coupled to the radar device;
a first antenna coupled to the nonreciprocal network; and
a second antenna coupled to the nonreciprocal network;
wherein the output signal from the radar device is configured to be delivered to the first antenna via the nonreciprocal network and then transmitted to a first side of a biological subject via the first antenna, and a first reflection signal from the first side of the biological subject is received by the first antenna and configured to be delivered to the second antenna via the nonreciprocal network and then transmitted to a second side of the biological subject via the second antenna, and a second reflection signal from the second side of the biological subject is received by the second antenna and configured to be delivered to the radar device via the nonreciprocal network.