This reference book entitled 'Design and Development of Dual-Frequency Circularly Polarized Circular Microstrip Patch Antenna for C-Band Applications' covers basic equation based design of dual-frequency slotted circular microstrip patch antenna using Finite Element Method (FEM) analysis.It highlights fundamental design concepts, design formulas, numerical and mathematical analysis of circular microstrip patch antenna.All antennas can be applicable for various C-Band (4 GHz-8 GHz) application