The evaluation and design of mobile gain antennas by computer simulation

A computer program has been written to simulate antenna performance on a small ground plane. The solution for a quarter-wavelength antenna has been expanded to include larger antennas with more complex current distributions. This paper includes a summary of the computer program and presents gain relationships between a quarter-wavelength antenna and various gain antennas over different sized ground planes. Experimental data which verify the results of the program are also presented.