Abstract:

This paper presents a solution to the shortcoming of large size and high power consumption of upright antenna.The solution uses the microstrip antenna in place of the traditional upright antenna.The radiation principle of microstrip antenna is discussed,and the entire design procedure of the microstrip antenna at frequency of 2.4 GHz is introduced.First,according to the requirements of the materials,the shape and the type of the microstrip antenna are determined,and the size of the antenna is determined according to the formula and software calculated results.And then the antenna model is built and simulated in ADS (Agilent).Finally the best antenna parameters are obtained through the optimizing and matching in order to make the antenna characteristics comply with the design requirements.

Key words: microstrip antenna;ADS;reflection coefficient;optimal matching