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With the rapid development of communication technology and wireless multimedia services , ultra- wideband (UWB) wireless technology worldwide more and more people's attention. The ultra-wideband system has the advantages of high transmission rate , simple structure , low power consumption , low cost , weakness and other anti-multipath . In accordance with the provisions of the Federal Communications Commission (FCC) , will be used as ultra-wideband systems range from 3.1 ~ 10.6GHz band . Ultra-wideband filter as one of the key components of the system , will have a direct impact on ultra-wideband system is good or bad . In this paper, ultra-wideband filter analysis and design work . Firstly, given the traditional narrowband filter design theory , and pointed out that the technical difficulties and the reasons of the traditional narrowband filter design method for ultra-wideband filter . And analysis of ultra-wideband filter design difficulties commonly used design method . On this basis , the paper produced five new ultra-wideband filter using the multimode resonant DGS technology design and processing , and has been tested with a vector network analyzer , respectively . The main content of this paper and innovations include the following points : 1 , this paper the design and production of a method based on the multi- mode resonant at the same time have a good band and band performance of the new ultra-wideband filter , the filter also with a compact, easy processing characteristics . Subsequently, the use of a method to reduce the radiation loss , to be a further improvement , to improve the performance of the band in the band . The test results and simulation results are in good agreement . Microstrip filter band suppression is not an ideal situation , this paper, with the the DGS structure of ultra-wideband filter with suppression . The DGS technology design and production of a new ultra-wideband filter with a good band rejection performance , measured results and the simulation results are in good agreement . 3 , this article notch status quo of the need for and the development of ultra-wideband filter . Followed , respectively, designed a single notch , and a kind of double trap Potter of new ultra-wideband filter , and the actual manufacture , test the two filters , test and simulation results are in good agreement .
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