New 2.5 Ghz Circularly Polarized Retrodirective Arrays For Autonomous Cars.
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Abstract
For the development of wireless communication technology beam tracking and security are the most important factor. Retrodirective analysis works as it automatically responding to an incoming signal location without any prior information of the source direction. The passive feed structure is used for designing MIMO antenna array systems due to its mow profile and its miniaturization Whereas the circularly polarized arrays is applied in the MIMO system to provide power division. The purpose of this paper is to design a circularly polarized couplers which works in Retrodirective mode. The resonant frequency of the coupler is 2.5 GHz. The Proposed couplers have been devised using the Glass Epoxy substrate (FR4) with dielectric constant (εr = 4.4). S parameters, radiation pattern, insertion and isolation losses are obtained from ANSYS software.
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