Design Of The Balun In The Ultra-Wideband Pulse Radiant Source

The research of the high power ultra-wideband pulse radiant source belongs to the category of a kind of basic theory, but its development and application contains at present in the world developing and causing a lot of front line sciences that people extraordinarily pay attention to. Especially it can be used as the electromagnetic weapon of high power, and its application is expanded in fields, such as military and space, etc..When the high-power ultra-wideband pulse radiation source emitted by the antenna to pulse through the transmission line until the end of the electromagnetic ,from the unbalanced transmission line to the balanced antenna,for the discontinuous change of the impedance,it will lead to the reflection of signals,and reduce the transmission efficiency.So it is necessary that the balun is increased between antenna and transmission line,so that it is resistance change in the process of signal transmission.The finite element is one kind of numerical analytical method that can try to get approximate solution, and it is to develop progressively in the last few years and pay attention to extensively and is used in CAE. Especially it is combined with electromagnetic and circuit, which promotes the faster development of CAE technology. ANSYS finite element software is a finite element computer of CAE technology. ANSYS finite element software is a finite element computer design program of a multiuse, and can be used for trying to get the answers to the questions, such as structure, fluid, electricity, electricmagnetic field and colliding, etc. ANSYS software is compared with the traditional methods in carrying on designing products, and it can lower costs and save time.In view of the ideals on the above,this text makes the brief introduction to the operation principle of the high power ultra-wideband pulse radiant source,and carry on a large amount of deep research to the balun and the theory of transmission line.And have carried on the balun modeling,emulation design of the balun and have gained some valuable optimum data and conclusions,such as VSWR,etc..