Communication system and mehtod using a part of human body as an antenna in the body area network

PURPOSE: A communication system using a portion of a human body is provided to create a stable radio channel using a low frequency band. CONSTITUTION: Transmitting party and receiving party communication devices(10,20) transmits and receives data signals through a wireless transmitting mode. The transmitting party and receiving party couplers transfer data signals between the transmitting party and receiving party communication devices and a human body(30). Transmitting party and receiving party impedance matching devices enables impedance matching between the transmitting party and receiving party communication devices and the transmitting party and receiving party couplers. The transmitting party communication device applies the transmitting data signal of an electrical signal form through the transmitting party coupler to the human body.