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Long primary lens antenna technology based on the open-cell structure

Author: LiuZhiJia
Tutor: YangShiWen
School: University of Electronic Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: The Long Bo lens antenna Dyadic Green's function Effective medium theory Layered open cell structure
CLC: TN827
Type: Master's thesis
Year: 2011
Downloads: 57
Quote: 0
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Abstract


Long primary lens antenna is a spherically symmetric dielectric lens antenna , focusing its good antenna performance advantages of broad-band , multi-beam scanning is widely used in telemetry remote sensing , aerospace , communications , surface ships , communications , satellite communications , collision avoidance radar fields. In this paper, a hierarchical form of layered the Dragon Bo lens antenna in the lens and specific way to achieve key technologies related to the research , the main contents include : This paper describes the Long Bo the lens antenna technology background , briefly discusses its basic works. Symmetric layered structure , the paper elaborated utilize and Dyadic Green Function the layered the Dragon Bo lens radiation characteristics of specific principles and derivation of the Long Bo lens antenna simulation design and experimental research for the actual the Dragon Bo lens antenna ball provides theoretical foundation support . Secondly, we study the two traditional methods to achieve the the Long Bo lens antenna , including the medium foam technology and open-cell structure technology , and pointed out their advantages and disadvantages . In order to achieve the ideal of the dielectric constant of the lens antenna approximation, the effective medium theory , to better meet the ABG rule modeling and simulation , to verify its effectiveness . Third , in order to achieve optimal performance Long primary lens antenna , this article uses a dielectric rod antenna feed circularly symmetric radiation , the use of optimization algorithms to optimize the design of the lens to achieve optimal use the two dragon of primary lens antenna gain . Corresponding global the Long Bo lens has easy to install and disadvantages in the design of effective medium theory without reducing the performance of the antenna radiation conditions , processing , assembling a new open cell structure of the two-tier high - efficiency hemispheric the Dragon Bo lens antenna . Finally, based on new open cell structure of two layers of high efficiency hemisphere the Dragon Bo lens antenna design details of the test , the test results and simulation results are in good agreement . The results show that , based on new open cell structure of two layers of high efficiency hemisphere the Dragon Bo lens antenna can be used in satellite communications and other fields .

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