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Phased array on a fingertip

机译:指尖上的相控阵

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摘要

An array of more than 4,000 optical antennas working in unison has been demonstrated on a millimetre-scale silicon chip. The result highlights the remarkable capabilities of optical integration in silicon. In his Nobel lecture in 1909, physicist Ferdinand Braun remarked' that: "It had always seemed most desirable to me to transmit the waves, in the main, in one direction only". He was referring to radio waves, which had hitherto been known to radiate only in a doughnut shape away from the emitter, as described by Heinrich Hertz two decades earlier. The invention for which Braun was recognized was the phased array - the idea of connecting up multiple antennas fed from a common source and using the relationship between the antennas' phase (where a wave's peaks and troughs lie) to enhance the emission of radio waves in a given direction.
机译:在毫米级的硅芯片上,已经展示了4000多个光学天线协同工作的阵列。结果突出了硅中光学集成的卓越能力。物理学家费迪南德·布劳恩(Ferdinand Braun)在1909年的诺贝尔奖演讲中说:“对我来说,似乎总是最主要的方向是只向一个方向传播波”。他指的是无线电波,迄今已知该无线电波仅以甜甜圈形状远离发射器进行辐射,就像二十年前海因里希·赫兹(Heinrich Hertz)所说的那样。 Braun被认可的发明是相控阵-一种将多个由同一源馈电的天线连接起来,并利用天线相位之间的关系(电波的波峰和波谷位于其中)来增强无线电波发射的想法。给定的方向。

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  • 来源
    《Nature》 |2013年第7431期|170-171|共2页
  • 作者

    THOMAS F. KRAUSS;

  • 作者单位

    Department of Physics, University of York, York YO105DD, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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