Based On Mutually Coupled Fed Of Coplanar Waveguide With Research And Design Of Multi-Notch Ultra-Wideband Antenna

Ultra-wideband communication system has been attracted more and more attention in modern mobile communication? Therefore, the design of ultra wideband antenna also requires a increasing number of high-gain and miniaturization,it is conductive to application integration of a communication system. The frequency ultra-wideband antenna range from 3.1GHz to 10.6GHz in 2002, it is allocated by the U.S. Federal Communications Commission(FCC).However, in free space, there are many narrow-band interference will affect the signal transmission of the ultra wideband antenna in the operating band of the ultra wideband antenna section. Since tension of spectrum, it is also necessary to be designed that have a plurality of notch with ultra wideband antenna that notch filter can be sufficient to cover the range. For the design of Ultra-wideband antenna miniaturization, development band,narrow-band interference interval, and achieve multiple notch which is major research in this paper.First, in the thesis, the main properties of ultra-wideband antenna is analyzed in theory,through the understanding of the performance of the antenna system and then to design more efficient ultra-wideband antenna.Secondly, in order to achieve the ultra wideband antenna band expansion, it has broader application space, wideband expansion methods have been studied in the article. At the same time it is decided to mutually coupled CPW feeding methods to achieve expansion band by selecting, modeling ultra-wideband antenna. And the miniaturization of ultra-wideband is deal with antenna more reasonable.Again, we study the equivalent circuit configuration and their respective properties in the mutual coupling seam sing resonator (CSRR) and SRR circuit be analyzed utilization. For the special advantages of CSRR and will its application in the design of ultra-wideband antenna.It is making ultra-wideband antenna play a good role in achieving avoidance of the narrowband interference. At the same time, the simulation model of the antenna by HFSS software,the overall performance of the antenna analysis is shows that the application of the standard to reach the antenna.Finally, the thesis has achieved a more precise notch range and narrow-band for tensions space spectrum resources. This paper is access to the design of implement a controlled notch by Defected Ground Structure (DGS) in order to achieve a more flexible range.When people usually designed for multi-notch with ultra wideband antenna, it is implemented for the case of direct filtered WLAN uplink and downlink bands.To this end,we have the original design of ultra-CSRR multi-notch broadband antenna has been improved.It is established and analyzed to achieve the uplink and downlink between WLAN partition filtering form through simulation, making it more efficient to save all aspects of spectrum resources and performance indicators in line with the good performance ultra-wideband antenna.The frequency band of the ultra wideband antenna and an improved method for expanding a multi-notch CSRR ultra wideband antenna in the paper,which research methods and research results be used in available communication systems integration and high bandwidth efficiency narrowband filter, which provides an important theoretical basis and simulation time,has important theoretical and economic value.