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Excessive-power microwave sources use specialized vacuum tubes to generate microwaves. These devices operate on completely different principles from low-frequency vacuum tubes, using the ballistic motion of electrons in a vacuum underneath the affect of controlling electric or magnetic fields, and embody the magnetron (used in microwave ovens), klystron, traveling-wave tube (TWT), https://casinositeleri2024.org crossed-subject amplifier, and gyrotron.

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Microwaves are particularly suitable for this use since they are extra easily centered into narrower beams than radio waves, permitting frequency reuse; their comparatively higher frequencies enable broad bandwidth and excessive data transmission charges, and antenna sizes are smaller than at decrease frequencies because antenna dimension is inversely proportional to the transmitted frequency.