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Ultra-wideband electromagnetics research began in Hertz, in 1886 to 1889 he did the experiment not only a good proof of the correctness of Maxwell 's electromagnetic theory , also successfully established the first transient pulse radiation and receiving system . Ultra-wideband After nearly a century of development , today , has become the focus of intense competition in the field of wireless communications . Domestic and international research on UWB antenna too numerous to mention , specifications can also do very small . The antenna is integrated in the existing small-scale integrated circuit template on ultra-wideband practices are rare , this paper study . This article refers to a rectangular sheet antennas (chip antenna), and to study its influence on the basic parameters of the antenna by analysis of the geometry of the antenna , in order to achieve the design of the small sheet antenna . The article design five kinds of antennas, in turn named rectangular sheets antenna sword antenna knife antenna down \In the wireless communication protocol , the turn of the FCC Rules 3.1-10.6GHz 3.1-4.75GHz ,4.75-7 .92 GHz ,7.92-10 .6 GHz is divided into three band groups . For the rectangular sheets antenna , the structure of the study , the influencing factors analysis and optimization , covering the frequency is 4.75-10.6GHz, the second , three band groups ; sword and knife antenna analysis , based on the prototype of a rectangular sheet current density , in order to achieve the Oval cut and the influence factors on the critical dimensions of the shape of the antenna , wherein machetes type clad frequency is 4.75-7.92GHz, i.e., the second band groups , the knife -type clad frequency is 3.1- 10.6GHz , i.e. throughout the first , second, third band groups ; inverted \structure influencing factors , due to the small size of the antenna , so only in the 4.75- 10.6GHz , that is, in the second , three-band group achieve ultra broadband . Four kinds of design and manufacturing into a kind , through the network analyzer to measure antenna return loss and VSWR , antenna turntable measuring antenna gain and pattern , to make a comparison of experimental results and simulation results . Finally , the sheet on the introduction of the C-shaped groove structure , a single notch and a double notch UWB antenna is designed .
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