Reconfigurable optical beamformer for simplified time steered arrays

OPT OpenIR > 半导体激光器专利数据库

	Reconfigurable optical beamformer for simplified time steered arrays
其他题名	Reconfigurable optical beamformer for simplified time steered arrays
	TULCHINSKY, DAVID A.; MATTHEWS, PAUL J.
	2002-12-05
专利权人	NAVY, THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE
公开日期	2002-12-05
授权国家	美国
专利类型	发明申请
摘要	An array antenna apparatus for producing a time-delay beamformed RF signal includes a laser, a modulator for RF modulating the laser optical signal, a first plurality of optical paths coupling the modulator output to a dispersive prism, another plurality of optical paths coupling the dispersive prism outputs to a corresponding plurality of time delay trimmers, an attenuator coupled to each time delay trimmer, and an optical switching matrix to which the time delay trimmers outputs are input. The inputs to the optical switching matrix accordingly are time and amplitude adjusted to remove front end errors prior to rerouting. This is repeated in the back end of the apparatus, in which the switching matrix outputs are each applied to a corresponding attenuator, the outputs of which are then each applied to a photodetector to generate a plurality of replica RF signals that are each applied to a time shifter, thereby producing an error-corrected output that is then applied to an antenna array. The output of the antenna array is a time-delay beamformed RF signal having a 2-D beamsteering capability.
其他摘要	用于产生时间延迟波束形成的RF信号的阵列天线装置包括激光器，用于RF调制激光光学信号的调制器，将调制器输出耦合到色散棱镜的第一多个光学路径，耦合色散的另一多个光学路径棱镜输出到相应的多个时间延迟修整器，耦合到每个时间延迟修整器的衰减器，以及输入时间延迟修整器输出的光学切换矩阵。因此，光交换矩阵的输入是时间和幅度调整，以在重新路由之前消除前端错误。这在装置的后端重复，其中开关矩阵输出每个都施加到相应的衰减器，然后每个衰减器的输出被施加到光电检测器以产生多个复制RF信号，每个复制RF信号应用于时移器，从而产生误差校正的输出，然后将其应用于天线阵列。天线阵列的输出是具有2-D波束控制能力的延时波束形成的RF信号。
主权项	An optical beamformer, comprising: a laser for generating an optical signal; a modulator having a first input for receiving the optical signal, a second input for receiving an RF input signal, and an output for applying a modulated optical signal; a first plurality of optical paths, each said optical path of said first plurality of optical paths having an input coupled to the modulator output and an output; a dispersive prism having a plurality of inputs, each said prism input coupled to a corresponding optical path output of said first plurality of optical paths, and a plurality of corresponding outputs; a second plurality of optical paths, each said optical path of said second plurality of optical paths having an input coupled to a dispersive prism output and having an output; a plurality of time delay trimmers, each having an input coupled to a corresponding output of an optical path of said second plurality of optical paths and an output; a first plurality of attenuators, each having an input coupled to a corresponding time delay trimmer output, and an output; an optical switching matrix having a plurality of inputs, each coupled to a corresponding attenuator output, and having a plurality of reroutable outputs; a second plurality of attenuators, each having an input coupled to a corresponding reroutable output, and having a corresponding plurality of outputs; a plurality of photodetectors each having an input coupled to a corresponding output of an attenuator of said second plurality of attenuators and an output for applying a replica RF signal; and a plurality of time shifters, each having an input coupled to a corresponding photodetector output and an output for applying a plurality of time shifted RF signals.
申请日期	2002-05-29
专利号	US20020181874A1
专利状态	失效
申请号	US10/156197
公开（公告）号	US20020181874A1
IPC 分类号	G02B6/28 \| H01Q3/26 \| G02B6/26 \| G02B6/35
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/52738
专题	半导体激光器专利数据库
作者单位	NAVY, THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE
推荐引用方式 GB/T 7714	TULCHINSKY, DAVID A.,MATTHEWS, PAUL J.. Reconfigurable optical beamformer for simplified time steered arrays. US20020181874A1[P]. 2002-12-05.