A new heating method using pulse modulated microwaves

Microwaves penetrate quite shallowly in human tissues, especially muscle and skin which are so-called high water content tissues. Therefore, it is very difficult to heat deep seated tumors by microwaves. In this paper, the authors consider pulse modulated microwaves irradiated toward a target located inside the tissues. In the simulation, the FD-TD method is used to obtain the microwave distribution in the tissues. The results indicate that the pulse modulated microwaves propagate to the target effectively. This means that it is possible to heat more deep targets by pulse modulated microwaves compared with the CW irradiation method