Effect of human body on antenna performance of transceiver for push-to-talk communication line in VHF and UHF bands

The antenna performance of a transceiver located in front of the human head was investigated with the main interest in the dependency on frequencies and the location of the antenna. We used a numerical approach for the investigation. We designed a helical antenna with a metallic case as a handheld type transceiver and calculated the radiation patterns of the antenna with a numerical human-body model. Moreover, the specific absorption rate (SAR) in a human body exposed to electromagnetic waves from the antenna is shown.