The Microstrip Antenna with PBG Used for 3G System

Aiming at the request of the antenna used for 3G system, we first analyze the characteristics of microstrip antenna and design methods of size structure, and then design the microstrip antenna with PBG by using MWO. The detailed analysis inquiries into the influence on the reflection coefficient S
₁₁
by key parameters, such as the length of PBG sides, the structural periodicity of PBG, the feeding point of antenna, the dielectric constant and thickness of circuit board have been studied. Finally, the design principles and advantages of the microstrip antenna with PBG are summarized.