λ/4金属支撑变阻式补偿型宽频带避雷器优化设计

Optimization design of λ/4 metal support compensation type wideband arrester

λ/4金属支撑式避雷器是一种直流短路高频开路避雷器件,在通讯传输系统中起到了将雷电流导入大地,保护通讯设备不受损坏,并正常工作的作用。λ/4金属支撑长度随着频率范围不同,中心频率f_0也不同。那么支撑长λ_0/4也不同。同样λ_0/4长度结构形式也可以不同。300MHz频率宽度以内的避雷器比较容易设计,利用简单的经验公式就可以设计;宽频式避雷器必须使主线特性阻抗与λ_0/4支撑部分的特性阻抗匹配,以达到最佳效果,并且要进行结构优化、性能优化、成本优化设计才能实现性价比较好的产品。利用Ansoft HFSS软件进行仿真大大节约了设计、试制时间,如果制造优良,产品测试效果与仿真效果非常接近,产品设计成功率比较高。

λ/4 metal support DC-arrester is a short-circuit high frequency of lightning arrester open in communication in the transmission system will play a lightning current into the earth, the protection of communications equipment from damage, and the role of normal work. λ/4 length with the metal support different frequency range, the center frequency f0 are also different. So long supported λ0/4 are also different. Similarly λ0/4 length of the structure forms can also be different. 300 MHz frequency within the width of the arrester relatively easy to design, using simple empirical formula can design ; broadband-arrester must make the main line of resistance and λ0/4 support some of the impedance matching characteristics, so as to achieve the best results, and to carry out structural optimization, Optimize performance, cost-optimized design can achieve better cost-effective products. Ansoft HFSS use of simulation software greatly saving design, trial production, manufacturing quality products if the test results and simulation results are very close, product design relatively high success rate.