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随着移动通信的迅速发展,可用的无线频段相继推进到200、400和800MHz,对于200MHz以上内频段,适用于微带线来制作功率放大器,它具有高效率、高稳定度、重复性好、结构尺寸小的特点。为促进超高频微带线功放器的使用,本文着重介绍了微带线功率放大器设计准则,改计方法,制作技术和技巧,并给出采用Smith法设计微带线功放器的实例。一、引言对于200MHz以上频段,微带功率放
With the rapid development of mobile communications, the available radio frequency bands are successively advanced to 200, 400 and 800MHz. For the internal frequency band above 200MHz, the power amplifier is suitable for the microstrip line. It has the advantages of high efficiency, high stability, good repeatability, Small size of the structure. In order to promote the use of UHF microstrip line amplifiers, this paper introduces the design guidelines, redesign methods, fabrication techniques and techniques of microstrip line amplifiers emphatically. The examples of designing microstrip line amplifiers by Smith method are given. First, the introduction For more than 200MHz band, microstrip power amplifier