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Optically produced true-time delays for phased antenna arrays

机译:相控天线阵列的光学产生的实时延迟

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A device is described for generating true-time delays optically for microwave signals used in beam steering and beam shaping in phased-array antennas. The device can be adapted to provide delays from picoseconds to nanoseconds. A single, compact unit should provide parallel delays for more than 64 independent antenna elements with a greater than 6-bit resolution. The time delays are produced by multiple reflections in a mirror configuration with continuous refocusing. A single spatial light modulator selects independent optical path lengths for each of the parallel antenna elements. Amplitude control for beam shaping can be integrated into the device. The unit can be made rugged for harsh environments by use of solid-block construction. The operation of the true-time delay device is described, along with the overall system configuration. Preliminary experimental data are given. (C) 1997 Optical Society of America.
机译:描述了一种用于光学地生成用于相控阵天线的波束控制和波束成形中的微波信号的实时延迟的设备。该设备可适于提供从皮秒到纳秒的延迟。一个紧凑的单元应为64个以上分辨率大于6位的独立天线元件提供并行延迟。时间延迟是由镜面配置中的多次反射以及连续的重新聚焦产生的。单个空间光调制器为每个平行天线元件选择独立的光程长度。光束整形的幅度控制可以集成到设备中。通过使用坚固块结构,可以使该设备在恶劣的环境中坚固耐用。描述了实时延迟设备的操作以及整个系统配置。给出了初步的实验数据。 (C)1997年美国眼镜学会。

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