STEM与日常科技·英语30篇（5）
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How Starlink Terminals Use Phased Arrays to Steer Beams Without Moving Parts
星链终端相控阵波束成形
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Starlink user terminals contain hundreds of tiny antennas arranged in a flat grid.
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Each antenna emits radio waves with precisely controlled timing delays and phases.
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By adjusting these phase shifts, the terminal steers a focused beam toward satellites.
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This electronic steering works instantly, unlike mechanical dishes that must rotate slowly.
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Phased arrays allow one terminal to track multiple satellites across the sky simultaneously.
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They also adapt rapidly to signal blockage from trees or buildings in real time.
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The system uses software-defined beamforming to optimize bandwidth and reduce interference.
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Engineers test beam patterns using anechoic chambers before mass production begins.
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This technology enables global broadband access even in remote mountainous regions.
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Future versions may integrate AI to predict satellite positions and pre-adjust beams.