Design Of A Dual-frequency Microstrip Array Antenna

In recent years,with the rapid development of wireless communication,the transmitting and receiving antennas of wireless communication systems have also improved.The practical application of antennas is more and more extensive,and is involved in security,smart homes,mobile smart products,smart access control and so on.At the same time,research is increasingly directed to dual-frequency,high-gain,high-efficiency and wide band antennas.At present,the realization of dual-frequency and high-gain antennas is one of the research hot spots.Through research on the progress of microstrip antennas both domestically and abroad,the understanding of microstrip antenna design methods was deepened.Using basic microstrip antenna theory,the analysis method of microstrip antennas has been described briefly.Also,the basic performance parameters of microstrip antennas,including radiation and electrical performance parameters,have been described.The theoretical calculation of the antenna radiating element is carried out to realize the dual-frequency of the microstrip antenna and the characteristics of the antenna array.1.The design of dual-band and micro array antenna was studied.For the two widely used frequency bands(2.4 GHz and 5.8 GHz)a microstrip antenna was designed and simulated in CST(a high-frequency electromagnetic structure simulation software).CST It is a studio suite that offers different software packages in different application scenarios.This article mainly uses CST Microwave Studio.1.The simulation results show that the resonance point is shifted at 5.8 GHz,and the return loss is large.2.The simulation results showed that the return loss of the two bands of the antenna was less than-10 dB and that the gain was greater than 10 dBi.And the direction is better.The size of the antenna is optimized to improve the resonant point of the antenna at 5.8 GHz.3.Next,the antenna is physically processed and tested in kind..The test results using the prototype showed that the return loss of the two bands of the antenna was also less than-lOdB,and that the maximum gain at 2.45 GHz was approximately 11dBi.The maximum gain in the 5.8 GHz band was approximately lOdBi.In this dissertation,a high-gain dual-frequency microstrip array antenna was designed.The return loss and the gain were required to be less than-10 dB and greater than 10 dBi,respectively.The dual-frequency antenna by slotting the rectangular patch,the gain of the antenna is increased by the form of an array.The dual-frequency microstrip array antenna test results designed in this paper meet the design requirements.