Square spiral microstrip antennas: analysis for different sizes and substrate parameters using a personal computer

It is demonstrated that the design of a square spiral microstrip antenna can be specified with only 4 parameters. Some details of a method of moments analysis technique are presented. Two test cases are presented to compare the performance of square spiral microstrip antennas of different winding densities. Either design could be advantageous depending upon the application. Finally, it is shown that such computations are within the reach of PCs.