log-periodic antenna การใช้

Secondly , in this paper , the four typical uwb antennas of tem horn antenna , log - periodic antenna , biconical antenna and helical antenna are theoretically analyzed and the uwb antenna design methods are generalized and discussed
Based on the previous theory , the fdtd method is used to analyze practical antennas , which include dipole antenna , microstrip antenna , log - periodic antenna and broadband resistance loaded monopoles . the particular problems that occur in the calculating of vary type antennas are discussed . the cross - section field of microstrip line and two - conductor line are analyzed , and the effect on the numerical result arising from the incident cross - section mesh size is discussed
The suitable tree - like and 3 / 2curve fractal symmetrical vibrators are chosen to make up a log - periodic antenna ( lpda ) , the performance , such as reflectance , input impedance , radiation pattern and gain are also compared with normal log - periodic antenna by cst microwave studio ? simulation , in order to investigate the effect of antenna miniaturization . the application of fractal technology in microstrip antenna is introduced at