期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2014
卷号：6
期号：5
页码：145
DOI：10.5121/ijwmn.2014.6512
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Cube satellite missions perform innovative scientific experiments on a low cost developmental platform buthave an inherent limitation of size and space. This restricts the total available solar power that can beharnessed and as a result, the radio links operate on stringent power budgets. For improving the availablemargins for communication in such satellites, it is desirable to improve upon the antenna systemperformance at the ground station used for the establishment of the links with the satellite. This can beachieved by improving the forward gain, the forward to backward ratio and the directivity of the antenna.This paper describes the electrical simulations and the performance evaluation of the one unit, two unit andfour unit circularly polarized crossed Yagi-Uda antenna array designed for communication with amateurradio (HAM) satellites operating over the 434 MHz to 438 MHz Amateur UHF band. The electro-magneticmodel has been developed using the 4NEC2 software. The simulations have been validated with thepractical field testing performed for estimating the SWR, antenna gain, the forward to backward ratio andradiation pattern for the antenna system.
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