1. What are the contributions in this paper?
This paper describes the basic concept of retrodirective array technology, discusses the three retrodirective array topologies with their advantages and disadvantages.. A series of array design considerations in the retrodirective array systems is presented, and further researches in this area are presented.
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2. What are the future works in this paper?
The retrodirective array capable of adaptive interference rejection will be the further research area [ 30, 31 ].. To obtain a strong and constant retrodirected power level transmitted back to the source, the methods of decoupling the retrodirective signal from the interrogating signal must be used and do further research [ 3 ].. The ability of the retrodirective transceiver to reduce multipath effects and fading requires further research [ 33 ].. Further research is required to establish performance of a full radio link consisting of two retrodirective transceivers, and the most economic method of integrating a retrodirective system should be investigated to reduce the cost and hardware requirements of antenna arrays [ 34 ].
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