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A novel omnidirectional circular polarized antenna array is proposed in this paper. The good omnidirectional circular polarization characteristic is realized by adjusting the separation distance between the dipoles and the dip angle relative to the horizontal direction. Reasonable agreement is gotten between the measured and simulated results of the reflection coefficient, AR, radiation pattern and...
This paper presents an approximate analytical method for the performance evaluation of a production line with multiple failure modes and unreliable buffer. A solution to a class of problems where a discrete material manufacturing system consisting of two machines that is subject to breakdown with multiple failure modes and one unreliable buffer was presented. This paper considers the machines with...
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