EM simulations for radio and wireless on a PC

An electromagnetic (EM) computational tool for radio and wireless applications is presented. The generality, versatility, accuracy, and practicality of the method and code are demonstrated on five very diverse, electrically large and complex antenna problems. The examples are: a dipole antenna array backed by an optimal 220-degree inverse corner reflector; an X-band reflector antenna modeled after a bat's ear; a pyramidal horn antenna together with its coax-to-waveguide feed; cylindrical and hemispherical dielectric-resonator antennas; and EM system consisting of a dipole antenna and a human body. The CPU time with a PC Pentium 166 MHz ranges from 2 seconds to 8 minutes for a single-frequency application. A factor of 10-100 average reduction in CPU time is observed when compared to other commercially available EM codes.