The Design And Simulation Of Dual Frequency Microstrip Antenna Based On Reactor Loaded

The microstrip antenna is a new type of antenna that has been gradually developed in the past 30 years.The microstrip antenna has received extensive attention from scholars and engineers due to its advantages of small size,light weight,easy conformity,and ease of manufacture.Due to its wide application value in the field of wireless communications,dual-band antennas have become an important field in the field of antenna research.The microstrip antenna can achieve dual-frequency operation through a simple method.The dual-band operation characteristics of the antenna have a wide range of applications in the wireless communication field,and the microstrip antenna realizes the dual-frequency operation of the antenna is relatively simple.There are many ways to realize the dual band operation of the microstrip antenna.The common methods are the multi-mode method,the multi-chip method,and the reactance loading method.Based on the professional 3D simulation software,this paper proposes three kinds of microwave frequency band dual-band microstrip antenna,and realize the function of batch definition software simulation monitor through VBA macro language.Using the 3.98 GHz rectangular microstrip antenna as a template,the rectangular microstrip antenna is designed.The first method is to open the edge of the microstrip antenna.The E-shaped patch is designed to work in 3.98 GHz and 5.825 GHz frequency bands.The gains achieved at these two working frequency points are 3.321 dB and 3.252 dB,respectively.The second type is that the rectangular microstrip antenna patch has a symmetrical internal pair.Seams achieve dual-frequency operation,with operating frequencies of 3.94 GHz and 5.668 GHz,and achievable gains of 3.2dB and 3.222 dB,respectively.The third method is to perform slit design on the radiation side by adjusting the second antenna.The current distribution and operating modes of the three dual-frequency antennas at the respective dual-frequency patch surfaces are analyzed.From the current distribution,the first working mode of the dual-frequency operation is the main mode of the patch antenna,and the second is the second mode.The mode of operation is a new mode that is stimulated by the opening of the patch.In addition,the size parameters are analyzed separately for the working frequency band and performance of the antenna,and it is found that the extension of the current path on the surface of the patch caused by the cracking opens a major contribution to the work frequency shift of the antenna.In addition,the gain changes with the size and size of the S-parameter.The resonant peak intensity change law has a very close relationship.The stronger the resonant peak intensity means the weaker the energy that the antenna is reflected at the feed point,which strengthens the gain of the antenna to some extent.In addition,by analyzing the loss of the antenna at the resonant frequency,it is learned that the opening design can increase the radiating energy of the antenna to a certain extent,but it also brings additional ohmic losses to the antenna.After simulating and analyzing these three types of antennas,the results show that both the resonant side and the radiating side can achieve a good dual-frequency characteristic in terms of slitting.