Discussion on broadband microstrip antenna technology Discussion on broadband microstrip antenna technology Wang Congmin, Gao Xiangjun, Xia Dongyu (Missile College, Air Force Engineering University, Sanyuan, Shaanxi 713800) Abstract: With the rapid development of modern communication and radar technology, broadband technology has become the research focus of microstrip antennas. The main measures adopted by microstrip antennas to achieve broadband and their respective advantages and disadvantages are summarized, and the analysis methods and commonly used design software are introduced. Keywords: microstrip antenna; broadband; radar; communication In recent years, antennas, as key equipment in radio application systems such as communication, broadcasting, radar, and guidance, have undergone tremendous changes in function, design, and manufacturing process. In particular, microstrip antennas have gained more favor with their advantages such as light weight, conformability, easy integration, and easy matching. Especially in mobile communications and personal communications, the status of microstrip antennas will be unparalleled in future development. However, the bandwidth of a general single-layer microstrip antenna is only 0.7% to 7%, and the main disadvantage of narrow bandwidth has restricted its development. At present, many researchers are committed to broadening the bandwidth of microstrip antennas by various methods, making the bandwidth of antenna units reach 13%, 16%, 25% or even 40% (SWR
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