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This paper presents the design methodology of multi-beam phased array of antennas that may provide high gain and narrow beam radiation patterns within a desired coverage range. The advantages of high energy efficiency in the coverage area provide the flexibility of applications in various area such as wireless power transmission and mobile communications. The relatively flexible mechanism to determine...
The use of an array antenna, transmitting pulsed signals and applying time-delays between the elements to create an area of high power density in front of the array at a prescribed position at a chosen moment in time is discussed. Using realistic bandwidths and pulse repetition frequencies leads to the creation of undesirable hot spots. Replacing the array elements with small phased array antennas...
A directional modulation system based on phase only modulation is demonstrated with a 2 element array. The hardware setup is discussed, and measurement results compared with simulations to analyze performance. We demonstrate how directional modulation offers greater security in directions other than intended, in contrast to conventional modulation.
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