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A novel optically driven ultrawideband phased array is presented. In the array, two coherent optical signals mixing at photodiodes produce RF signals that are tunable over an ultra-wide bandwidth. An optical interleaving feed network is used to drive the array, which is capable of mitigating phase drift due to acoustic vibration and maintaining phase fidelity. In addition, excess noises in the system...
In this paper we present an ultra-wideband optically addressed transmitting phased array antenna, consisting of ultra-wideband and tunable RF synthesizer, optically addressed phase feeding network, and high-speed photodetector integrated wideband antenna array. RF source generation and optical feed network are capable of cover the frequency range up to 50GHz. A set of 4×4 antenna arrays, such as horn...
In this paper we present an ultra-wideband optically addressed transmitting phased array antenna, consisting of ultra-wideband and tunable RF synthesizer, optically addressed phase feeding network, and high-speed photodetector integrated wideband antenna array. RF source generation and optical feed network are capable of cover the frequency range up to 50GHz. A set of 4×4 antenna arrays, such as horn...
An optically addressed phase feed network for an ultra-wideband RF phased array is proposed. The architecture leverages recent advances in the development of optical RF source generation and coherent optical system in the fiber optics. By using polarization maintaining (PM) fibers two coherent optical tones can be encoded in two orthogonal states and transmitted to a high-speed photomixer at the antenna...
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